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<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> 2029 | 0.1 | — </context>
us-gaap:FinanceLeaseLiabilityPaymentsDueYearFive
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
3.4
monetaryItemType
table: <entity> 3.4 </entity> <entity type> monetaryItemType </entity type> <context> 2025 | $ 3.4 | $ 0.4 </context>
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
14.7
monetaryItemType
table: <entity> 14.7 </entity> <entity type> monetaryItemType </entity type> <context> Total Lease Payments Due | 14.7 | 1.9 </context>
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
1.9
monetaryItemType
table: <entity> 1.9 </entity> <entity type> monetaryItemType </entity type> <context> Total Lease Payments Due | 14.7 | 1.9 </context>
us-gaap:FinanceLeaseLiabilityPaymentsDue
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
5.5
monetaryItemType
table: <entity> 5.5 </entity> <entity type> monetaryItemType </entity type> <context> Less: Imputed Interest | 5.5 | 0.2 </context>
us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
0.2
monetaryItemType
table: <entity> 0.2 </entity> <entity type> monetaryItemType </entity type> <context> Less: Imputed Interest | 5.5 | 0.2 </context>
us-gaap:FinanceLeaseLiabilityUndiscountedExcessAmount
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
9.2
monetaryItemType
table: <entity> 9.2 </entity> <entity type> monetaryItemType </entity type> <context> Total Lease Obligations | 9.2 | 1.7 </context>
us-gaap:OperatingLeaseLiability
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
1.7
monetaryItemType
table: <entity> 1.7 </entity> <entity type> monetaryItemType </entity type> <context> Total Lease Obligations | 9.2 | 1.7 </context>
us-gaap:FinanceLeaseLiability
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
3.2
monetaryItemType
table: <entity> 3.2 </entity> <entity type> monetaryItemType </entity type> <context> Less: Current Lease Obligations | 3.2 | 0.4 </context>
us-gaap:OperatingLeaseLiabilityCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
0.4
monetaryItemType
table: <entity> 0.4 </entity> <entity type> monetaryItemType </entity type> <context> 2025 | $ 3.4 | $ 0.4 </context>
us-gaap:FinanceLeaseLiabilityCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
6.0
monetaryItemType
table: <entity> 6.0 </entity> <entity type> monetaryItemType </entity type> <context> Total Long-term Lease Obligations | $ 6.0 | $ 1.3 </context>
us-gaap:OperatingLeaseLiabilityNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td><td></td><td>Operating</td><td>Finance</td></tr><tr><td>2025</td><td></td><td></td><td></td><td>$ 3.4</td><td></td><td>$ 0.4</td><td></td></tr><tr><td>2026</td><td></td><td></td><td></td><td>3.3</td><td></td><td>0.4</td><td></td></tr><tr><td>2027</td><td></td><td></td><td></td><td>4.2</td><td></td><td>0.5</td><td></td></tr><tr><td>2028</td><td></td><td></td><td></td><td>0.3</td><td></td><td>0.6</td><td></td></tr><tr><td>2029</td><td></td><td></td><td></td><td>0.1</td><td></td><td>—</td><td></td></tr><tr><td>Thereafter</td><td></td><td></td><td></td><td>3.4</td><td></td><td>—</td><td></td></tr><tr><td>Total Lease Payments Due</td><td></td><td></td><td></td><td>14.7</td><td></td><td>1.9</td><td></td></tr><tr><td>Less: Imputed Interest</td><td></td><td></td><td></td><td>5.5</td><td></td><td>0.2</td><td></td></tr><tr><td>Total Lease Obligations</td><td></td><td></td><td></td><td>9.2</td><td></td><td>1.7</td><td></td></tr><tr><td>Less: Current Lease Obligations</td><td></td><td></td><td></td><td>3.2</td><td></td><td>0.4</td><td></td></tr><tr><td>Total Long-term Lease Obligations</td><td></td><td></td><td></td><td>$ 6.0</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
1.3
monetaryItemType
table: <entity> 1.3 </entity> <entity type> monetaryItemType </entity type> <context> Total Long-term Lease Obligations | $ 6.0 | $ 1.3 </context>
us-gaap:FinanceLeaseLiabilityNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
13.6
monetaryItemType
table: <entity> 13.6 </entity> <entity type> monetaryItemType </entity type> <context> Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a) | $ 13.6 | $ 8.9 | $ 9.8 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
8.9
monetaryItemType
table: <entity> 8.9 </entity> <entity type> monetaryItemType </entity type> <context> Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a) | $ 13.6 | $ 8.9 | $ 9.8 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
9.8
monetaryItemType
table: <entity> 9.8 </entity> <entity type> monetaryItemType </entity type> <context> Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a) | $ 13.6 | $ 8.9 | $ 9.8 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
4.0
monetaryItemType
table: <entity> 4.0 </entity> <entity type> monetaryItemType </entity type> <context> Interest and Investment Income (b) Interest and Investment Income (b) | 4.0 | 10.3 | — </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
10.3
monetaryItemType
table: <entity> 10.3 </entity> <entity type> monetaryItemType </entity type> <context> Interest and Investment Income (b) Interest and Investment Income (b) | 4.0 | 10.3 | — </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Interest and Investment Income (b) Interest and Investment Income (b) | 4.0 | 10.3 | — </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
5.0
monetaryItemType
table: <entity> 5.0 </entity> <entity type> monetaryItemType </entity type> <context> AFUDC - Equity | 5.0 | 3.6 | 2.7 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
3.6
monetaryItemType
table: <entity> 3.6 </entity> <entity type> monetaryItemType </entity type> <context> AFUDC - Equity | 5.0 | 3.6 | 2.7 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
2.7
monetaryItemType
table: <entity> 2.7 </entity> <entity type> monetaryItemType </entity type> <context> AFUDC - Equity | 5.0 | 3.6 | 2.7 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
0.1
monetaryItemType
table: <entity> 0.1 </entity> <entity type> monetaryItemType </entity type> <context> Gain on Land Sales | 0.1 | 0.2 | — </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
0.2
monetaryItemType
table: <entity> 0.2 </entity> <entity type> monetaryItemType </entity type> <context> Gain on Land Sales | 0.1 | 0.2 | — </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
10.2
monetaryItemType
table: <entity> 10.2 </entity> <entity type> monetaryItemType </entity type> <context> PSA Liability (c) PSA Liability (c) | — | — | 10.2 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
58.4
monetaryItemType
table: <entity> 58.4 </entity> <entity type> monetaryItemType </entity type> <context> Gain on Arbitration Award (d) Gain on Arbitration Award (d) | — | 58.4 | — </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
0.3
monetaryItemType
table: <entity> 0.3 </entity> <entity type> monetaryItemType </entity type> <context> Other Income (Expense) | 0.3 | 3.6 | ( 0.3 ) </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
23.0
monetaryItemType
table: <entity> 23.0 </entity> <entity type> monetaryItemType </entity type> <context> Total Other Income (Expense) - Other | $ 23.0 | $ 85.0 | $ 22.4 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
85.0
monetaryItemType
table: <entity> 85.0 </entity> <entity type> monetaryItemType </entity type> <context> Total Other Income (Expense) - Other | $ 23.0 | $ 85.0 | $ 22.4 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Income (Expense) - Other</td><td></td><td></td><td></td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Pension and Other Postretirement Benefit Plan Non-Service Credit (a) Pension and Other Postretirement Benefit Plan Non-Service Credit (a)</td><td>$ 13.6</td><td></td><td>$ 8.9</td><td></td><td>$ 9.8</td><td></td></tr><tr><td>Interest and Investment Income (b) Interest and Investment Income (b)</td><td>4.0</td><td></td><td>10.3</td><td></td><td>—</td><td></td></tr><tr><td>AFUDC - Equity</td><td>5.0</td><td></td><td>3.6</td><td></td><td>2.7</td><td></td></tr><tr><td>Gain on Land Sales</td><td>0.1</td><td></td><td>0.2</td><td></td><td>—</td><td></td></tr><tr><td>PSA Liability (c) PSA Liability (c)</td><td>—</td><td></td><td>—</td><td></td><td>10.2</td><td></td></tr><tr><td>Gain on Arbitration Award (d) Gain on Arbitration Award (d)</td><td>—</td><td></td><td>58.4</td><td></td><td>—</td><td></td></tr><tr><td>Other Income (Expense)</td><td>0.3</td><td></td><td>3.6</td><td></td><td>( 0.3 )</td><td></td></tr><tr><td>Total Other Income (Expense) - Other</td><td>$ 23.0</td><td></td><td>$ 85.0</td><td></td><td>$ 22.4</td><td></td></tr></table>
table
22.4
monetaryItemType
table: <entity> 22.4 </entity> <entity type> monetaryItemType </entity type> <context> Total Other Income (Expense) - Other | $ 23.0 | $ 85.0 | $ 22.4 </context>
us-gaap:OtherNonoperatingIncomeExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
5387.8
monetaryItemType
table: <entity> 5387.8 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment in Service | $ 5,387.8 | $ 5,167.2 </context>
us-gaap:PropertyPlantAndEquipmentGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
5167.2
monetaryItemType
table: <entity> 5167.2 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment in Service | $ 5,387.8 | $ 5,167.2 </context>
us-gaap:PropertyPlantAndEquipmentGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
197.5
monetaryItemType
table: <entity> 197.5 </entity> <entity type> monetaryItemType </entity type> <context> Construction Work in Progress | 197.5 | 146.7 </context>
us-gaap:ConstructionInProgressGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
146.7
monetaryItemType
table: <entity> 146.7 </entity> <entity type> monetaryItemType </entity type> <context> Construction Work in Progress | 197.5 | 146.7 </context>
us-gaap:ConstructionInProgressGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
2077.8
monetaryItemType
table: <entity> 2077.8 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
1969.4
monetaryItemType
table: <entity> 1969.4 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
3507.5
monetaryItemType
table: <entity> 3507.5 </entity> <entity type> monetaryItemType </entity type> <context> Regulated Operations – Net | 3,507.5 | 3,344.5 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
3344.5
monetaryItemType
table: <entity> 3344.5 </entity> <entity type> monetaryItemType </entity type> <context> Regulated Operations – Net | 3,507.5 | 3,344.5 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
1605.3
monetaryItemType
table: <entity> 1605.3 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment in Service | 1,605.3 | 1,612.8 </context>
us-gaap:PropertyPlantAndEquipmentGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
1612.8
monetaryItemType
table: <entity> 1612.8 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment in Service | 1,605.3 | 1,612.8 </context>
us-gaap:PropertyPlantAndEquipmentGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
51.9
monetaryItemType
table: <entity> 51.9 </entity> <entity type> monetaryItemType </entity type> <context> Construction Work in Progress | 51.9 | 48.9 </context>
us-gaap:ConstructionInProgressGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
48.9
monetaryItemType
table: <entity> 48.9 </entity> <entity type> monetaryItemType </entity type> <context> Construction Work in Progress | 51.9 | 48.9 </context>
us-gaap:ConstructionInProgressGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
272.9
monetaryItemType
table: <entity> 272.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
229.1
monetaryItemType
table: <entity> 229.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
1384.3
monetaryItemType
table: <entity> 1384.3 </entity> <entity type> monetaryItemType </entity type> <context> ALLETE Clean Energy – Net | 1,384.3 | 1,432.6 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
1432.6
monetaryItemType
table: <entity> 1432.6 </entity> <entity type> monetaryItemType </entity type> <context> ALLETE Clean Energy – Net | 1,384.3 | 1,432.6 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
377.4
monetaryItemType
table: <entity> 377.4 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment in Service | 377.4 | 355.8 </context>
us-gaap:PropertyPlantAndEquipmentGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
355.8
monetaryItemType
table: <entity> 355.8 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment in Service | 377.4 | 355.8 </context>
us-gaap:PropertyPlantAndEquipmentGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
77.5
monetaryItemType
table: <entity> 77.5 </entity> <entity type> monetaryItemType </entity type> <context> Construction Work in Progress | 77.5 | 27.5 </context>
us-gaap:ConstructionInProgressGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
27.5
monetaryItemType
table: <entity> 27.5 </entity> <entity type> monetaryItemType </entity type> <context> Construction Work in Progress | 77.5 | 27.5 </context>
us-gaap:ConstructionInProgressGross
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
165.2
monetaryItemType
table: <entity> 165.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
147.0
monetaryItemType
table: <entity> 147.0 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
289.7
monetaryItemType
table: <entity> 289.7 </entity> <entity type> monetaryItemType </entity type> <context> Corporate and Other – Net | 289.7 | 236.3 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
236.3
monetaryItemType
table: <entity> 236.3 </entity> <entity type> monetaryItemType </entity type> <context> Corporate and Other – Net | 289.7 | 236.3 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
5181.5
monetaryItemType
table: <entity> 5181.5 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment – Net | $ 5,181.5 | $ 5,013.4 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment</td><td></td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td></td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Regulated Operations</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>$ 5,387.8</td><td></td><td></td><td>$ 5,167.2</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Construction Work in Progress</td><td>197.5</td><td></td><td></td><td>146.7</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 2,077.8 )</td><td></td><td></td><td>( 1,969.4 )</td><td></td></tr><tr><td>Regulated Operations – Net</td><td>3,507.5</td><td></td><td></td><td>3,344.5</td><td></td></tr><tr><td>ALLETE Clean Energy</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>1,605.3</td><td></td><td></td><td>1,612.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>51.9</td><td></td><td></td><td>48.9</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 272.9 )</td><td></td><td></td><td>( 229.1 )</td><td></td></tr><tr><td>ALLETE Clean Energy – Net</td><td>1,384.3</td><td></td><td></td><td>1,432.6</td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td><td></td></tr><tr><td>Corporate and Other (a) Corporate and Other (a)</td><td></td><td></td><td></td></tr><tr><td>Property, Plant and Equipment in Service</td><td>377.4</td><td></td><td></td><td>355.8</td><td></td></tr><tr><td>Construction Work in Progress</td><td>77.5</td><td></td><td></td><td>27.5</td><td></td></tr><tr><td>Accumulated Depreciation</td><td>( 165.2 )</td><td></td><td></td><td>( 147.0 )</td><td></td></tr><tr><td>Corporate and Other – Net</td><td>289.7</td><td></td><td></td><td>236.3</td><td></td></tr><tr><td>Property, Plant and Equipment – Net</td><td>$ 5,181.5</td><td></td><td></td><td>$ 5,013.4</td><td></td></tr></table>
table
5013.4
monetaryItemType
table: <entity> 5013.4 </entity> <entity type> monetaryItemType </entity type> <context> Property, Plant and Equipment – Net | $ 5,181.5 | $ 5,013.4 </context>
us-gaap:PropertyPlantAndEquipmentNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
200.4
monetaryItemType
table: <entity> 200.4 </entity> <entity type> monetaryItemType </entity type> <context> Obligation as of December 31, 2022 | $ 200.4 </context>
us-gaap:AssetRetirementObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
10.3
monetaryItemType
table: <entity> 10.3 </entity> <entity type> monetaryItemType </entity type> <context> Accretion | 10.3 </context>
us-gaap:AssetRetirementObligationAccretionExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
10.2
monetaryItemType
table: <entity> 10.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AssetRetirementObligationLiabilitiesSettled
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
2.4
monetaryItemType
table: <entity> 2.4 </entity> <entity type> monetaryItemType </entity type> <context> Revisions in Estimated Cash Flows | 2.4 </context>
us-gaap:AssetRetirementObligationRevisionOfEstimate
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
202.9
monetaryItemType
table: <entity> 202.9 </entity> <entity type> monetaryItemType </entity type> <context> Obligation as of December 31, 2023 | 202.9 </context>
us-gaap:AssetRetirementObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
13.1
monetaryItemType
table: <entity> 13.1 </entity> <entity type> monetaryItemType </entity type> <context> Accretion | 13.1 </context>
us-gaap:AssetRetirementObligationAccretionExpense
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
47.7
monetaryItemType
table: <entity> 47.7 </entity> <entity type> monetaryItemType </entity type> <context> Liabilities Recognized (a) Liabilities Recognized (a) | 47.7 </context>
us-gaap:AssetRetirementObligationLiabilitiesIncurred
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
16.0
monetaryItemType
table: <entity> 16.0 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:AssetRetirementObligationLiabilitiesSettled
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
13.6
monetaryItemType
table: <entity> 13.6 </entity> <entity type> monetaryItemType </entity type> <context> Revisions in Estimated Cash Flows | 13.6 </context>
us-gaap:AssetRetirementObligationRevisionOfEstimate
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Asset Retirement Obligations</td><td></td><td></td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Obligation as of December 31, 2022</td><td></td><td>$ 200.4</td><td></td></tr><tr><td>Accretion</td><td></td><td>10.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 10.2 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>2.4</td><td></td></tr><tr><td>Obligation as of December 31, 2023</td><td></td><td>202.9</td><td></td></tr><tr><td>Accretion</td><td></td><td>13.1</td><td></td></tr><tr><td>Liabilities Recognized (a) Liabilities Recognized (a)</td><td></td><td>47.7</td><td></td></tr><tr><td>Liabilities Settled</td><td></td><td>( 16.0 )</td><td></td></tr><tr><td>Revisions in Estimated Cash Flows</td><td></td><td>13.6</td><td></td></tr><tr><td>Obligation as of December 31, 2024</td><td></td><td>$ 261.3</td><td></td></tr></table>
table
261.3
monetaryItemType
table: <entity> 261.3 </entity> <entity type> monetaryItemType </entity type> <context> Obligation as of December 31, 2024 | $ 261.3 </context>
us-gaap:AssetRetirementObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
716.2
monetaryItemType
table: <entity> 716.2 </entity> <entity type> monetaryItemType </entity type> <context> Boswell Unit 4 | $ 716.2 | $ 396.7 | $ 14.2 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
396.7
monetaryItemType
table: <entity> 396.7 </entity> <entity type> monetaryItemType </entity type> <context> Boswell Unit 4 | $ 716.2 | $ 396.7 | $ 14.2 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
14.2
monetaryItemType
table: <entity> 14.2 </entity> <entity type> monetaryItemType </entity type> <context> Boswell Unit 4 | $ 716.2 | $ 396.7 | $ 14.2 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
80
percentItemType
table: <entity> 80 </entity> <entity type> percentItemType </entity type> <context> Boswell Unit 4 | $ 716.2 | $ 396.7 | $ 14.2 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
101.1
monetaryItemType
table: <entity> 101.1 </entity> <entity type> monetaryItemType </entity type> <context> Transmission Assets | 101.1 | 26.1 | — | 9.3 - 14.7 9.3 - 14.7 </context>
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
26.1
monetaryItemType
table: <entity> 26.1 </entity> <entity type> monetaryItemType </entity type> <context> Transmission Assets | 101.1 | 26.1 | — | 9.3 - 14.7 9.3 - 14.7 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Transmission Assets | 101.1 | 26.1 | — | 9.3 - 14.7 9.3 - 14.7 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
9.3
percentItemType
table: <entity> 9.3 </entity> <entity type> percentItemType </entity type> <context> None </context>
us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
14.7
percentItemType
table: <entity> 14.7 </entity> <entity type> percentItemType </entity type> <context> None </context>
us-gaap:JointlyOwnedUtilityPlantProportionateOwnershipShare
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
817.3
monetaryItemType
table: <entity> 817.3 </entity> <entity type> monetaryItemType </entity type> <context> Total | $ 817.3 | $ 422.8 | $ 14.2 </context>
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
422.8
monetaryItemType
table: <entity> 422.8 </entity> <entity type> monetaryItemType </entity type> <context> Total | $ 817.3 | $ 422.8 | $ 14.2 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
725.9
monetaryItemType
table: <entity> 725.9 </entity> <entity type> monetaryItemType </entity type> <context> Boswell Unit 4 | $ 725.9 | $ 369.8 | $ 2.8 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
369.8
monetaryItemType
table: <entity> 369.8 </entity> <entity type> monetaryItemType </entity type> <context> Boswell Unit 4 | $ 725.9 | $ 369.8 | $ 2.8 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
2.8
monetaryItemType
table: <entity> 2.8 </entity> <entity type> monetaryItemType </entity type> <context> Boswell Unit 4 | $ 725.9 | $ 369.8 | $ 2.8 | 80 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
101.0
monetaryItemType
table: <entity> 101.0 </entity> <entity type> monetaryItemType </entity type> <context> Transmission Assets | 101.0 | 23.6 | — | 9.3 - 14.7 9.3 - 14.7 </context>
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
23.6
monetaryItemType
table: <entity> 23.6 </entity> <entity type> monetaryItemType </entity type> <context> Transmission Assets | 101.0 | 23.6 | — | 9.3 - 14.7 9.3 - 14.7 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
826.9
monetaryItemType
table: <entity> 826.9 </entity> <entity type> monetaryItemType </entity type> <context> Total | $ 826.9 | $ 393.4 | $ 2.8 </context>
us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulated Utility Plant</td><td>Plant in Service</td><td>Accumulated Depreciation</td><td>Construction Work in Progress</td><td>% Ownership</td></tr><tr><td>Millions</td><td></td><td></td><td></td><td></td></tr><tr><td>As of December 31, 2024</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 716.2</td><td>$ 396.7</td><td>$ 14.2</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.1</td><td>26.1</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 817.3</td><td>$ 422.8</td><td>$ 14.2</td><td></td></tr><tr><td>As of December 31, 2023</td><td></td><td></td><td></td><td></td></tr><tr><td>Boswell Unit 4</td><td>$ 725.9</td><td>$ 369.8</td><td>$ 2.8</td><td>80</td></tr><tr><td>Transmission Assets</td><td>101.0</td><td>23.6</td><td>—</td><td>9.3 - 14.7 9.3 - 14.7</td></tr><tr><td>Total</td><td>$ 826.9</td><td>$ 393.4</td><td>$ 2.8</td><td></td></tr></table>
table
393.4
monetaryItemType
table: <entity> 393.4 </entity> <entity type> monetaryItemType </entity type> <context> Total | $ 826.9 | $ 393.4 | $ 2.8 </context>
us-gaap:JointlyOwnedUtilityPlantOwnershipAmountOfPlantAccumulatedDepreciation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Fuel Adjustment Clause (b) Fuel Adjustment Clause (b) | — | $ 8.7 </context>
us-gaap:RegulatoryAssetsCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
8.7
monetaryItemType
table: <entity> 8.7 </entity> <entity type> monetaryItemType </entity type> <context> Fuel Adjustment Clause (b) Fuel Adjustment Clause (b) | — | $ 8.7 </context>
us-gaap:RegulatoryAssetsCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
1.6
monetaryItemType
table: <entity> 1.6 </entity> <entity type> monetaryItemType </entity type> <context> Other | $ 1.6 | 0.6 </context>
us-gaap:RegulatoryAssetsCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
0.6
monetaryItemType
table: <entity> 0.6 </entity> <entity type> monetaryItemType </entity type> <context> Other | $ 1.6 | 0.6 </context>
us-gaap:RegulatoryAssetsCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
9.3
monetaryItemType
table: <entity> 9.3 </entity> <entity type> monetaryItemType </entity type> <context> Total Current Regulatory Assets | $ 1.6 | $ 9.3 </context>
us-gaap:RegulatoryAssetsCurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
200.3
monetaryItemType
table: <entity> 200.3 </entity> <entity type> monetaryItemType </entity type> <context> Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c) | $ 200.3 | $ 218.6 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
218.6
monetaryItemType
table: <entity> 218.6 </entity> <entity type> monetaryItemType </entity type> <context> Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c) | $ 200.3 | $ 218.6 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
84.9
monetaryItemType
table: <entity> 84.9 </entity> <entity type> monetaryItemType </entity type> <context> Income Taxes (d) Income Taxes (d) | 84.9 | 88.1 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
88.1
monetaryItemType
table: <entity> 88.1 </entity> <entity type> monetaryItemType </entity type> <context> Income Taxes (d) Income Taxes (d) | 84.9 | 88.1 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
41.0
monetaryItemType
table: <entity> 41.0 </entity> <entity type> monetaryItemType </entity type> <context> Asset Retirement Obligations (e) Asset Retirement Obligations (e) | 41.0 | 37.7 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
37.7
monetaryItemType
table: <entity> 37.7 </entity> <entity type> monetaryItemType </entity type> <context> Asset Retirement Obligations (e) Asset Retirement Obligations (e) | 41.0 | 37.7 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
17.3
monetaryItemType
table: <entity> 17.3 </entity> <entity type> monetaryItemType </entity type> <context> Taconite Harbor (g) Taconite Harbor (g) | 17.3 | 20.9 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
20.9
monetaryItemType
table: <entity> 20.9 </entity> <entity type> monetaryItemType </entity type> <context> Taconite Harbor (g) Taconite Harbor (g) | 17.3 | 20.9 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
11.6
monetaryItemType
table: <entity> 11.6 </entity> <entity type> monetaryItemType </entity type> <context> Manufactured Gas Plant (h) Manufactured Gas Plant (h) | 11.6 | 13.2 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
13.2
monetaryItemType
table: <entity> 13.2 </entity> <entity type> monetaryItemType </entity type> <context> Manufactured Gas Plant (h) Manufactured Gas Plant (h) | 11.6 | 13.2 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
5.5
monetaryItemType
table: <entity> 5.5 </entity> <entity type> monetaryItemType </entity type> <context> Cost Recovery Riders (f) Cost Recovery Riders (f) | 5.5 | 33.8 </context>
us-gaap:RegulatoryAssetsNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Regulatory Assets and Liabilities</td><td></td><td></td></tr><tr><td>As of December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Current Regulatory Assets (a) Current Regulatory Assets (a)</td><td></td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>—</td><td></td><td>$ 8.7</td><td></td></tr><tr><td>Other</td><td>$ 1.6</td><td></td><td>0.6</td><td></td></tr><tr><td>Total Current Regulatory Assets</td><td>$ 1.6</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Current Regulatory Assets</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>$ 200.3</td><td></td><td>$ 218.6</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>84.9</td><td></td><td>88.1</td><td></td></tr><tr><td>Asset Retirement Obligations (e) Asset Retirement Obligations (e)</td><td>41.0</td><td></td><td>37.7</td><td></td></tr><tr><td>Taconite Harbor (g) Taconite Harbor (g)</td><td>17.3</td><td></td><td>20.9</td><td></td></tr><tr><td>Manufactured Gas Plant (h) Manufactured Gas Plant (h)</td><td>11.6</td><td></td><td>13.2</td><td></td></tr><tr><td>Cost Recovery Riders (f) Cost Recovery Riders (f)</td><td>5.5</td><td></td><td>33.8</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>4.5</td><td></td><td>5.0</td><td></td></tr><tr><td>PPACA Income Tax Deferral</td><td>3.7</td><td></td><td>3.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>2.9</td><td></td><td>4.2</td><td></td></tr><tr><td>Total Non-Current Regulatory Assets</td><td>$ 371.7</td><td></td><td>$ 425.4</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Current Regulatory Liabilities (i) Current Regulatory Liabilities (i)</td><td></td><td></td></tr><tr><td>Provision for Interim Rate Refund</td><td>$ 23.0</td><td></td><td>—</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>7.2</td><td></td><td>—</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>1.3</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Total Current Regulatory Liabilities</td><td>$ 31.5</td><td></td><td>$ 3.9</td><td></td></tr><tr><td>Non-Current Regulatory Liabilities</td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Income Taxes (d) Income Taxes (d)</td><td>$ 292.7</td><td></td><td>$ 310.0</td><td></td></tr><tr><td>Wholesale and Retail Contra AFUDC (j) Wholesale and Retail Contra AFUDC (j)</td><td>77.6</td><td></td><td>78.0</td><td></td></tr><tr><td>Plant Removal Obligations (k) Plant Removal Obligations (k)</td><td>74.2</td><td></td><td>67.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Defined Benefit Pension and Other Postretirement Benefit Plans (c) Defined Benefit Pension and Other Postretirement Benefit Plans (c)</td><td>40.7</td><td></td><td>48.6</td><td></td></tr><tr><td>Non-Jurisdictional Land Sales (l) Non-Jurisdictional Land Sales (l)</td><td>59.7</td><td></td><td>30.2</td><td></td></tr><tr><td>Investment Tax Credits (m) Investment Tax Credits (m)</td><td>17.8</td><td></td><td>13.6</td><td></td></tr><tr><td>Boswell Units 1 and 2 Net Plant and Equipment (n) Boswell Units 1 and 2 Net Plant and Equipment (n)</td><td>6.7</td><td></td><td>6.7</td><td></td></tr><tr><td>Fuel Adjustment Clause (b) Fuel Adjustment Clause (b)</td><td>0.6</td><td></td><td>15.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Other</td><td>0.5</td><td></td><td>4.4</td><td></td></tr><tr><td>Total Non-Current Regulatory Liabilities</td><td>$ 570.5</td><td></td><td>$ 574.0</td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
33.8
monetaryItemType
table: <entity> 33.8 </entity> <entity type> monetaryItemType </entity type> <context> Cost Recovery Riders (f) Cost Recovery Riders (f) | 5.5 | 33.8 </context>
us-gaap:RegulatoryAssetsNoncurrent