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<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
637.1
monetaryItemType
table: <entity> 637.1 </entity> <entity type> monetaryItemType </entity type> <context> Total Deferred Income Tax Assets | $ 637.1 | $ 706.7 </context>
us-gaap:DeferredTaxAssetsNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
706.7
monetaryItemType
table: <entity> 706.7 </entity> <entity type> monetaryItemType </entity type> <context> Total Deferred Income Tax Assets | $ 637.1 | $ 706.7 </context>
us-gaap:DeferredTaxAssetsNet
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
619.7
monetaryItemType
table: <entity> 619.7 </entity> <entity type> monetaryItemType </entity type> <context> Property-Related | 619.7 | 632.0 </context>
us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
632.0
monetaryItemType
table: <entity> 632.0 </entity> <entity type> monetaryItemType </entity type> <context> Property-Related | 619.7 | 632.0 </context>
us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
29.0
monetaryItemType
table: <entity> 29.0 </entity> <entity type> monetaryItemType </entity type> <context> Unamortized Investment Tax Credits | 29.0 | 29.6 </context>
us-gaap:AccumulatedDeferredInvestmentTaxCredit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
29.6
monetaryItemType
table: <entity> 29.6 </entity> <entity type> monetaryItemType </entity type> <context> Unamortized Investment Tax Credits | 29.0 | 29.6 </context>
us-gaap:AccumulatedDeferredInvestmentTaxCredit
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
24.4
monetaryItemType
table: <entity> 24.4 </entity> <entity type> monetaryItemType </entity type> <context> Regulatory Assets | 24.4 | 25.3 </context>
us-gaap:DeferredTaxLiabilitiesRegulatoryAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
25.3
monetaryItemType
table: <entity> 25.3 </entity> <entity type> monetaryItemType </entity type> <context> Regulatory Assets | 24.4 | 25.3 </context>
us-gaap:DeferredTaxLiabilitiesRegulatoryAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
890.5
monetaryItemType
table: <entity> 890.5 </entity> <entity type> monetaryItemType </entity type> <context> Total Deferred Income Tax Liabilities | $ 890.5 | $ 899.4 </context>
us-gaap:DeferredIncomeTaxLiabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
899.4
monetaryItemType
table: <entity> 899.4 </entity> <entity type> monetaryItemType </entity type> <context> Total Deferred Income Tax Liabilities | $ 890.5 | $ 899.4 </context>
us-gaap:DeferredIncomeTaxLiabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
253.4
monetaryItemType
table: <entity> 253.4 </entity> <entity type> monetaryItemType </entity type> <context> Net Deferred Income Taxes (a) Net Deferred Income Taxes (a) | $ 253.4 | $ 192.7 </context>
us-gaap:DeferredTaxLiabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Deferred Income Tax 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>Deferred Income Tax Assets</td><td></td><td></td></tr><tr><td>Deferred Gain - Land Sales</td><td>$ 16.5</td><td></td><td>$ 8.3</td><td></td></tr><tr><td>Employee Benefits and Compensation</td><td>20.5</td><td></td><td>29.3</td><td></td></tr><tr><td>Property-Related</td><td>52.0</td><td></td><td>58.1</td><td></td></tr><tr><td>NOL Carryforwards</td><td>10.6</td><td></td><td>13.0</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Tax Credit Carryforwards</td><td>486.9</td><td></td><td>557.4</td><td></td></tr><tr><td>Power Sales Agreements</td><td>7.3</td><td></td><td>9.0</td><td></td></tr><tr><td>Regulatory Liabilities</td><td>84.0</td><td></td><td>89.0</td><td></td></tr><tr><td>Other</td><td>4.2</td><td></td><td>0.6</td><td></td></tr><tr><td>Gross Deferred Income Tax Assets</td><td>682.0</td><td></td><td>764.7</td><td></td></tr><tr><td>Deferred Income Tax Asset Valuation Allowance</td><td>( 44.9 )</td><td></td><td>( 58.0 )</td><td></td></tr><tr><td>Total Deferred Income Tax Assets</td><td>$ 637.1</td><td></td><td>$ 706.7</td><td></td></tr><tr><td>Deferred Income Tax Liabilities</td><td></td><td></td></tr><tr><td>Deferred Gain</td><td>$ 7.1</td><td></td><td>$ 7.9</td><td></td></tr><tr><td>Property-Related</td><td>619.7</td><td></td><td>632.0</td><td></td></tr><tr><td>Regulatory Asset for Benefit Obligations</td><td>46.0</td><td></td><td>48.1</td><td></td></tr><tr><td>Unamortized Investment Tax Credits</td><td>29.0</td><td></td><td>29.6</td><td></td></tr><tr><td>Partnership Basis Differences</td><td>164.3</td><td></td><td>156.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Regulatory Assets</td><td>24.4</td><td></td><td>25.3</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Total Deferred Income Tax Liabilities</td><td>$ 890.5</td><td></td><td>$ 899.4</td><td></td></tr><tr><td>Net Deferred Income Taxes (a) Net Deferred Income Taxes (a)</td><td>$ 253.4</td><td></td><td>$ 192.7</td><td></td></tr><tr><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></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr></table>
table
192.7
monetaryItemType
table: <entity> 192.7 </entity> <entity type> monetaryItemType </entity type> <context> Net Deferred Income Taxes (a) Net Deferred Income Taxes (a) | $ 253.4 | $ 192.7 </context>
us-gaap:DeferredTaxLiabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NOL and Tax Credit Carryforwards</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></td><td></td><td></td></tr><tr><td>Federal Tax Credit Carryforwards</td><td>$ 424.7</td><td>$ 480.4</td></tr><tr><td>State NOL Carryforwards (a) State NOL Carryforwards (a)</td><td>$ 258.8</td><td>$ 280.9</td></tr><tr><td>State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b)</td><td>$ 19.9</td><td>$ 21.5</td></tr></table>
table
424.7
monetaryItemType
table: <entity> 424.7 </entity> <entity type> monetaryItemType </entity type> <context> Federal Tax Credit Carryforwards | $ 424.7 | $ 480.4 </context>
us-gaap:TaxCreditCarryforwardAmount
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NOL and Tax Credit Carryforwards</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></td><td></td><td></td></tr><tr><td>Federal Tax Credit Carryforwards</td><td>$ 424.7</td><td>$ 480.4</td></tr><tr><td>State NOL Carryforwards (a) State NOL Carryforwards (a)</td><td>$ 258.8</td><td>$ 280.9</td></tr><tr><td>State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b)</td><td>$ 19.9</td><td>$ 21.5</td></tr></table>
table
480.4
monetaryItemType
table: <entity> 480.4 </entity> <entity type> monetaryItemType </entity type> <context> Federal Tax Credit Carryforwards | $ 424.7 | $ 480.4 </context>
us-gaap:TaxCreditCarryforwardAmount
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NOL and Tax Credit Carryforwards</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></td><td></td><td></td></tr><tr><td>Federal Tax Credit Carryforwards</td><td>$ 424.7</td><td>$ 480.4</td></tr><tr><td>State NOL Carryforwards (a) State NOL Carryforwards (a)</td><td>$ 258.8</td><td>$ 280.9</td></tr><tr><td>State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b)</td><td>$ 19.9</td><td>$ 21.5</td></tr></table>
table
258.8
monetaryItemType
table: <entity> 258.8 </entity> <entity type> monetaryItemType </entity type> <context> State NOL Carryforwards (a) State NOL Carryforwards (a) | $ 258.8 | $ 280.9 </context>
us-gaap:OperatingLossCarryforwards
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NOL and Tax Credit Carryforwards</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></td><td></td><td></td></tr><tr><td>Federal Tax Credit Carryforwards</td><td>$ 424.7</td><td>$ 480.4</td></tr><tr><td>State NOL Carryforwards (a) State NOL Carryforwards (a)</td><td>$ 258.8</td><td>$ 280.9</td></tr><tr><td>State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b)</td><td>$ 19.9</td><td>$ 21.5</td></tr></table>
table
280.9
monetaryItemType
table: <entity> 280.9 </entity> <entity type> monetaryItemType </entity type> <context> State NOL Carryforwards (a) State NOL Carryforwards (a) | $ 258.8 | $ 280.9 </context>
us-gaap:OperatingLossCarryforwards
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NOL and Tax Credit Carryforwards</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></td><td></td><td></td></tr><tr><td>Federal Tax Credit Carryforwards</td><td>$ 424.7</td><td>$ 480.4</td></tr><tr><td>State NOL Carryforwards (a) State NOL Carryforwards (a)</td><td>$ 258.8</td><td>$ 280.9</td></tr><tr><td>State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b)</td><td>$ 19.9</td><td>$ 21.5</td></tr></table>
table
19.9
monetaryItemType
table: <entity> 19.9 </entity> <entity type> monetaryItemType </entity type> <context> State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b) | $ 19.9 | $ 21.5 </context>
us-gaap:TaxCreditCarryforwardAmount
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>NOL and Tax Credit Carryforwards</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></td><td></td><td></td></tr><tr><td>Federal Tax Credit Carryforwards</td><td>$ 424.7</td><td>$ 480.4</td></tr><tr><td>State NOL Carryforwards (a) State NOL Carryforwards (a)</td><td>$ 258.8</td><td>$ 280.9</td></tr><tr><td>State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b)</td><td>$ 19.9</td><td>$ 21.5</td></tr></table>
table
21.5
monetaryItemType
table: <entity> 21.5 </entity> <entity type> monetaryItemType </entity type> <context> State Tax Credit Carryforwards (b) State Tax Credit Carryforwards (b) | $ 19.9 | $ 21.5 </context>
us-gaap:TaxCreditCarryforwardAmount
<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>Gross Unrecognized Income Tax Benefits</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Balance at January 1</td><td>$ 1.1</td><td></td><td>$ 1.3</td><td></td><td>$ 1.3</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>Reductions for Tax Positions Related to Prior Years</td><td>—</td><td></td><td>( 0.2 )</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>Balance as of December 31</td><td>$ 1.1</td><td></td><td>$ 1.1</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
1.1
monetaryItemType
table: <entity> 1.1 </entity> <entity type> monetaryItemType </entity type> <context> Balance at January 1 | $ 1.1 | $ 1.3 | $ 1.3 </context>
us-gaap:UnrecognizedTaxBenefits
<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>Gross Unrecognized Income Tax Benefits</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Balance at January 1</td><td>$ 1.1</td><td></td><td>$ 1.3</td><td></td><td>$ 1.3</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>Reductions for Tax Positions Related to Prior Years</td><td>—</td><td></td><td>( 0.2 )</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>Balance as of December 31</td><td>$ 1.1</td><td></td><td>$ 1.1</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> Balance at January 1 | $ 1.1 | $ 1.3 | $ 1.3 </context>
us-gaap:UnrecognizedTaxBenefits
<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>Gross Unrecognized Income Tax Benefits</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Balance at January 1</td><td>$ 1.1</td><td></td><td>$ 1.3</td><td></td><td>$ 1.3</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>Reductions for Tax Positions Related to Prior Years</td><td>—</td><td></td><td>( 0.2 )</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>Balance as of December 31</td><td>$ 1.1</td><td></td><td>$ 1.1</td><td></td><td>$ 1.3</td><td></td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Reductions for Tax Positions Related to Prior Years | — | ( 0.2 ) | — </context>
us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
<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>Gross Unrecognized Income Tax Benefits</td><td>2024</td><td>2023</td><td>2022</td></tr><tr><td>Millions</td><td></td><td></td><td></td></tr><tr><td>Balance at January 1</td><td>$ 1.1</td><td></td><td>$ 1.3</td><td></td><td>$ 1.3</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>Reductions for Tax Positions Related to Prior Years</td><td>—</td><td></td><td>( 0.2 )</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>Balance as of December 31</td><td>$ 1.1</td><td></td><td>$ 1.1</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> None </context>
us-gaap:UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
701.7
monetaryItemType
table: <entity> 701.7 </entity> <entity type> monetaryItemType </entity type> <context> Accumulated Benefit Obligation | $ 701.7 | $ 729.5 </context>
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
729.5
monetaryItemType
table: <entity> 729.5 </entity> <entity type> monetaryItemType </entity type> <context> Accumulated Benefit Obligation | $ 701.7 | $ 729.5 </context>
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
746.3
monetaryItemType
table: <entity> 746.3 </entity> <entity type> monetaryItemType </entity type> <context> Obligation, Beginning of Year | $ 746.3 | $ 739.7 </context>
us-gaap:DefinedBenefitPlanBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
739.7
monetaryItemType
table: <entity> 739.7 </entity> <entity type> monetaryItemType </entity type> <context> Obligation, Beginning of Year | $ 746.3 | $ 739.7 </context>
us-gaap:DefinedBenefitPlanBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
6.6
monetaryItemType
table: <entity> 6.6 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | 6.6 | 6.5 </context>
us-gaap:DefinedBenefitPlanServiceCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
6.5
monetaryItemType
table: <entity> 6.5 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | 6.6 | 6.5 </context>
us-gaap:DefinedBenefitPlanServiceCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
38.6
monetaryItemType
table: <entity> 38.6 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 38.6 | 40.5 </context>
us-gaap:DefinedBenefitPlanInterestCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
40.5
monetaryItemType
table: <entity> 40.5 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 38.6 | 40.5 </context>
us-gaap:DefinedBenefitPlanInterestCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
17.1
monetaryItemType
table: <entity> 17.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanActuarialGainLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
13.9
monetaryItemType
table: <entity> 13.9 </entity> <entity type> monetaryItemType </entity type> <context> Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a) | ( 17.1 ) | 13.9 </context>
us-gaap:DefinedBenefitPlanActuarialGainLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
61.9
monetaryItemType
table: <entity> 61.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
60.9
monetaryItemType
table: <entity> 60.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
7.0
monetaryItemType
table: <entity> 7.0 </entity> <entity type> monetaryItemType </entity type> <context> Participant Contributions | 7.0 | 6.6 </context>
us-gaap:DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
6.6
monetaryItemType
table: <entity> 6.6 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | 6.6 | 6.5 </context>
us-gaap:DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
719.5
monetaryItemType
table: <entity> 719.5 </entity> <entity type> monetaryItemType </entity type> <context> Obligation, End of Year | $ 719.5 | $ 746.3 </context>
us-gaap:DefinedBenefitPlanBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
589.0
monetaryItemType
table: <entity> 589.0 </entity> <entity type> monetaryItemType </entity type> <context> Fair Value, Beginning of Year | $ 589.0 | $ 568.6 </context>
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
568.6
monetaryItemType
table: <entity> 568.6 </entity> <entity type> monetaryItemType </entity type> <context> Fair Value, Beginning of Year | $ 589.0 | $ 568.6 </context>
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
43.0
monetaryItemType
table: <entity> 43.0 </entity> <entity type> monetaryItemType </entity type> <context> Actual Return on Plan Assets | 43.0 | 55.1 </context>
us-gaap:DefinedBenefitPlanActualReturnOnPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
55.1
monetaryItemType
table: <entity> 55.1 </entity> <entity type> monetaryItemType </entity type> <context> Actual Return on Plan Assets | 43.0 | 55.1 </context>
us-gaap:DefinedBenefitPlanActualReturnOnPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
34.0
monetaryItemType
table: <entity> 34.0 </entity> <entity type> monetaryItemType </entity type> <context> Employer Contribution (b) Employer Contribution (b) | 34.0 | 26.2 </context>
us-gaap:DefinedBenefitPlanContributionsByEmployer
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
26.2
monetaryItemType
table: <entity> 26.2 </entity> <entity type> monetaryItemType </entity type> <context> Employer Contribution (b) Employer Contribution (b) | 34.0 | 26.2 </context>
us-gaap:DefinedBenefitPlanContributionsByEmployer
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
61.9
monetaryItemType
table: <entity> 61.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanPlanAssetsBenefitsPaid
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
60.9
monetaryItemType
table: <entity> 60.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanPlanAssetsBenefitsPaid
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
604.1
monetaryItemType
table: <entity> 604.1 </entity> <entity type> monetaryItemType </entity type> <context> Fair Value, End of Year | $ 604.1 | $ 589.0 </context>
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
115.4
monetaryItemType
table: <entity> 115.4 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
157.3
monetaryItemType
table: <entity> 157.3 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
1.9
monetaryItemType
table: <entity> 1.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
2.1
monetaryItemType
table: <entity> 2.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
113.5
monetaryItemType
table: <entity> 113.5 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Pension Obligation and Funded Status</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>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 746.3</td><td></td><td>$ 739.7</td><td></td></tr><tr><td>Service Cost</td><td>6.6</td><td></td><td>6.5</td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Actuarial (Gain) Loss (a) Actuarial (Gain) Loss (a)</td><td>( 17.1 )</td><td></td><td>13.9</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Participant Contributions</td><td>7.0</td><td></td><td>6.6</td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 589.0</td><td></td><td>$ 568.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>43.0</td><td></td><td>55.1</td><td></td></tr><tr><td>Employer Contribution (b) Employer Contribution (b)</td><td>34.0</td><td></td><td>26.2</td><td></td></tr><tr><td>Benefits Paid</td><td>( 61.9 )</td><td></td><td>( 60.9 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Pension Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Current Liabilities</td><td>$( 1.9 )</td><td>$( 2.1 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 113.5 )</td><td>$( 155.2 )</td></tr></table>
table
155.2
monetaryItemType
table: <entity> 155.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reconciliation of Net Pension Amounts Recognized in Consolidated Balance Sheet</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>Net Loss</td><td>$( 235.2 )</td><td>$( 256.9 )</td></tr><tr><td>Prior Service Cost</td><td>( 0.1 )</td><td>—</td></tr><tr><td>Accumulated Contributions in Excess of Net Periodic Benefit Cost (Prepaid Pension Asset)</td><td>119.9</td><td>99.6</td></tr><tr><td>Total Net Pension Amounts Recognized in Consolidated Balance Sheet</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr></table>
table
235.2
monetaryItemType
table: <entity> 235.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reconciliation of Net Pension Amounts Recognized in Consolidated Balance Sheet</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>Net Loss</td><td>$( 235.2 )</td><td>$( 256.9 )</td></tr><tr><td>Prior Service Cost</td><td>( 0.1 )</td><td>—</td></tr><tr><td>Accumulated Contributions in Excess of Net Periodic Benefit Cost (Prepaid Pension Asset)</td><td>119.9</td><td>99.6</td></tr><tr><td>Total Net Pension Amounts Recognized in Consolidated Balance Sheet</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr></table>
table
256.9
monetaryItemType
table: <entity> 256.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reconciliation of Net Pension Amounts Recognized in Consolidated Balance Sheet</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>Net Loss</td><td>$( 235.2 )</td><td>$( 256.9 )</td></tr><tr><td>Prior Service Cost</td><td>( 0.1 )</td><td>—</td></tr><tr><td>Accumulated Contributions in Excess of Net Periodic Benefit Cost (Prepaid Pension Asset)</td><td>119.9</td><td>99.6</td></tr><tr><td>Total Net Pension Amounts Recognized in Consolidated Balance Sheet</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr></table>
table
0.1
monetaryItemType
table: <entity> 0.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reconciliation of Net Pension Amounts Recognized in Consolidated Balance Sheet</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>Net Loss</td><td>$( 235.2 )</td><td>$( 256.9 )</td></tr><tr><td>Prior Service Cost</td><td>( 0.1 )</td><td>—</td></tr><tr><td>Accumulated Contributions in Excess of Net Periodic Benefit Cost (Prepaid Pension Asset)</td><td>119.9</td><td>99.6</td></tr><tr><td>Total Net Pension Amounts Recognized in Consolidated Balance Sheet</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Prior Service Cost | ( 0.1 ) | — </context>
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reconciliation of Net Pension Amounts Recognized in Consolidated Balance Sheet</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>Net Loss</td><td>$( 235.2 )</td><td>$( 256.9 )</td></tr><tr><td>Prior Service Cost</td><td>( 0.1 )</td><td>—</td></tr><tr><td>Accumulated Contributions in Excess of Net Periodic Benefit Cost (Prepaid Pension Asset)</td><td>119.9</td><td>99.6</td></tr><tr><td>Total Net Pension Amounts Recognized in Consolidated Balance Sheet</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr></table>
table
115.4
monetaryItemType
table: <entity> 115.4 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Reconciliation of Net Pension Amounts Recognized in Consolidated Balance Sheet</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>Net Loss</td><td>$( 235.2 )</td><td>$( 256.9 )</td></tr><tr><td>Prior Service Cost</td><td>( 0.1 )</td><td>—</td></tr><tr><td>Accumulated Contributions in Excess of Net Periodic Benefit Cost (Prepaid Pension Asset)</td><td>119.9</td><td>99.6</td></tr><tr><td>Total Net Pension Amounts Recognized in Consolidated Balance Sheet</td><td>$( 115.4 )</td><td>$( 157.3 )</td></tr></table>
table
157.3
monetaryItemType
table: <entity> 157.3 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
6.6
monetaryItemType
table: <entity> 6.6 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | $ 6.6 | $ 6.5 | $ 9.3 </context>
us-gaap:DefinedBenefitPlanServiceCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
6.5
monetaryItemType
table: <entity> 6.5 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | $ 6.6 | $ 6.5 | $ 9.3 </context>
us-gaap:DefinedBenefitPlanServiceCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
9.3
monetaryItemType
table: <entity> 9.3 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | $ 6.6 | $ 6.5 | $ 9.3 </context>
us-gaap:DefinedBenefitPlanServiceCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
38.6
monetaryItemType
table: <entity> 38.6 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 38.6 | 40.5 | 27.2 </context>
us-gaap:DefinedBenefitPlanInterestCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
40.5
monetaryItemType
table: <entity> 40.5 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 38.6 | 40.5 | 27.2 </context>
us-gaap:DefinedBenefitPlanInterestCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
27.2
monetaryItemType
table: <entity> 27.2 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 38.6 | 40.5 | 27.2 </context>
us-gaap:DefinedBenefitPlanInterestCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
44.8
monetaryItemType
table: <entity> 44.8 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
43.8
monetaryItemType
table: <entity> 43.8 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
41.5
monetaryItemType
table: <entity> 41.5 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
6.5
monetaryItemType
table: <entity> 6.5 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | $ 6.6 | $ 6.5 | $ 9.3 </context>
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
5.8
monetaryItemType
table: <entity> 5.8 </entity> <entity type> monetaryItemType </entity type> <context> Amortization of Loss | 6.5 | 5.8 | 11.4 </context>
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
11.4
monetaryItemType
table: <entity> 11.4 </entity> <entity type> monetaryItemType </entity type> <context> Amortization of Loss | 6.5 | 5.8 | 11.4 </context>
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
0.1
monetaryItemType
table: <entity> 0.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
6.8
monetaryItemType
table: <entity> 6.8 </entity> <entity type> monetaryItemType </entity type> <context> Net Pension Cost | $ 6.8 | $ 8.9 | $ 6.3 </context>
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
8.9
monetaryItemType
table: <entity> 8.9 </entity> <entity type> monetaryItemType </entity type> <context> Net Pension Cost | $ 6.8 | $ 8.9 | $ 6.3 </context>
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
<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>Components of Net Periodic Pension Cost</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>Service Cost</td><td>$ 6.6</td><td></td><td>$ 6.5</td><td></td><td>$ 9.3</td><td></td></tr><tr><td>Non-Service Cost Components (a) Non-Service Cost Components (a)</td><td></td><td></td><td></td></tr><tr><td>Interest Cost</td><td>38.6</td><td></td><td>40.5</td><td></td><td>27.2</td><td></td></tr><tr><td>Expected Return on Plan Assets</td><td>( 44.8 )</td><td></td><td>( 43.8 )</td><td></td><td>( 41.5 )</td><td></td></tr><tr><td>Amortization of Loss</td><td>6.5</td><td></td><td>5.8</td><td></td><td>11.4</td><td></td></tr><tr><td>Amortization of Prior Service Credit</td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td><td>( 0.1 )</td><td></td></tr><tr><td>Net Pension Cost</td><td>$ 6.8</td><td></td><td>$ 8.9</td><td></td><td>$ 6.3</td><td></td></tr></table>
table
6.3
monetaryItemType
table: <entity> 6.3 </entity> <entity type> monetaryItemType </entity type> <context> Net Pension Cost | $ 6.8 | $ 8.9 | $ 6.3 </context>
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
15.2
monetaryItemType
table: <entity> 15.2 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
2.5
monetaryItemType
table: <entity> 2.5 </entity> <entity type> monetaryItemType </entity type> <context> Net (Gain) Loss | $( 15.2 ) | $ 2.5 </context>
us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
0.1
monetaryItemType
table: <entity> 0.1 </entity> <entity type> monetaryItemType </entity type> <context> Amortization of Prior Service Credit | 0.1 | 0.1 </context>
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
6.5
monetaryItemType
table: <entity> 6.5 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
5.7
monetaryItemType
table: <entity> 5.7 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
21.6
monetaryItemType
table: <entity> 21.6 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Other Changes in Pension Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td></tr><tr><td>Year Ended December 31</td><td>2024</td><td>2023</td></tr><tr><td>Millions</td><td></td><td></td></tr><tr><td>Net (Gain) Loss</td><td>$( 15.2 )</td><td>$ 2.5</td></tr><tr><td>Amortization of Prior Service Credit</td><td>0.1</td><td></td><td>0.1</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Amortization of Loss</td><td>( 6.5 )</td><td>( 5.7 )</td><td></td></tr><tr><td>Total Recognized in Other Comprehensive Income and Regulatory Assets or Liabilities</td><td>$( 21.6 )</td><td>$( 3.1 )</td></tr></table>
table
3.1
monetaryItemType
table: <entity> 3.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets</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>Projected Benefit Obligation</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Fair Value of Plan Assets</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr></table>
table
719.5
monetaryItemType
table: <entity> 719.5 </entity> <entity type> monetaryItemType </entity type> <context> Projected Benefit Obligation | $ 719.5 | $ 746.3 </context>
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets</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>Projected Benefit Obligation</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Fair Value of Plan Assets</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr></table>
table
746.3
monetaryItemType
table: <entity> 746.3 </entity> <entity type> monetaryItemType </entity type> <context> Projected Benefit Obligation | $ 719.5 | $ 746.3 </context>
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets</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>Projected Benefit Obligation</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Fair Value of Plan Assets</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr></table>
table
701.7
monetaryItemType
table: <entity> 701.7 </entity> <entity type> monetaryItemType </entity type> <context> Accumulated Benefit Obligation | $ 701.7 | $ 729.5 </context>
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets</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>Projected Benefit Obligation</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Fair Value of Plan Assets</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr></table>
table
729.5
monetaryItemType
table: <entity> 729.5 </entity> <entity type> monetaryItemType </entity type> <context> Accumulated Benefit Obligation | $ 701.7 | $ 729.5 </context>
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets</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>Projected Benefit Obligation</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Fair Value of Plan Assets</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr></table>
table
604.1
monetaryItemType
table: <entity> 604.1 </entity> <entity type> monetaryItemType </entity type> <context> Fair Value of Plan Assets | $ 604.1 | $ 589.0 </context>
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Information for Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets</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>Projected Benefit Obligation</td><td>$ 719.5</td><td></td><td>$ 746.3</td><td></td></tr><tr><td>Accumulated Benefit Obligation</td><td>$ 701.7</td><td></td><td>$ 729.5</td><td></td></tr><tr><td>Fair Value of Plan Assets</td><td>$ 604.1</td><td></td><td>$ 589.0</td><td></td></tr></table>
table
589.0
monetaryItemType
table: <entity> 589.0 </entity> <entity type> monetaryItemType </entity type> <context> Fair Value of Plan Assets | $ 604.1 | $ 589.0 </context>
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
73.9
monetaryItemType
table: <entity> 73.9 </entity> <entity type> monetaryItemType </entity type> <context> Obligation, Beginning of Year | $ 73.9 | $ 110.4 </context>
us-gaap:DefinedBenefitPlanBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
110.4
monetaryItemType
table: <entity> 110.4 </entity> <entity type> monetaryItemType </entity type> <context> Obligation, Beginning of Year | $ 73.9 | $ 110.4 </context>
us-gaap:DefinedBenefitPlanBenefitObligation
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
1.5
monetaryItemType
table: <entity> 1.5 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | 1.5 | 2.0 </context>
us-gaap:DefinedBenefitPlanServiceCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
2.0
monetaryItemType
table: <entity> 2.0 </entity> <entity type> monetaryItemType </entity type> <context> Service Cost | 1.5 | 2.0 </context>
us-gaap:DefinedBenefitPlanServiceCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
3.9
monetaryItemType
table: <entity> 3.9 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 3.9 | 5.6 </context>
us-gaap:DefinedBenefitPlanInterestCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
5.6
monetaryItemType
table: <entity> 5.6 </entity> <entity type> monetaryItemType </entity type> <context> Interest Cost | 3.9 | 5.6 </context>
us-gaap:DefinedBenefitPlanInterestCost
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
1.9
monetaryItemType
table: <entity> 1.9 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanActuarialGainLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
9.3
monetaryItemType
table: <entity> 9.3 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanActuarialGainLoss
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
6.4
monetaryItemType
table: <entity> 6.4 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
8.1
monetaryItemType
table: <entity> 8.1 </entity> <entity type> monetaryItemType </entity type> <context> None </context>
us-gaap:DefinedBenefitPlanBenefitObligationBenefitsPaid
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
1.4
monetaryItemType
table: <entity> 1.4 </entity> <entity type> monetaryItemType </entity type> <context> Participant Contributions | 1.4 | 2.4 </context>
us-gaap:DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
2.4
monetaryItemType
table: <entity> 2.4 </entity> <entity type> monetaryItemType </entity type> <context> Participant Contributions | 1.4 | 2.4 </context>
us-gaap:DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant
<table><tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr><tr><td>Postretirement Health and Life Obligation and Funded Status</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>Change in Benefit Obligation</td><td></td><td></td></tr><tr><td>Obligation, Beginning of Year</td><td>$ 73.9</td><td></td><td>$ 110.4</td><td></td></tr><tr><td>Service Cost</td><td>1.5</td><td></td><td>2.0</td><td></td></tr><tr><td>Interest Cost</td><td>3.9</td><td></td><td>5.6</td><td></td></tr><tr><td>Actuarial Gain (a) Actuarial Gain (a)</td><td>( 1.9 )</td><td></td><td>( 9.3 )</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Plan Amendments (b) Plan Amendments (b)</td><td>—</td><td></td><td>( 29.1 )</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Obligation, End of Year</td><td>$ 72.4</td><td></td><td>$ 73.9</td><td></td></tr><tr><td>Change in Plan Assets</td><td></td><td></td></tr><tr><td>Fair Value, Beginning of Year</td><td>$ 173.8</td><td></td><td>$ 162.6</td><td></td></tr><tr><td>Actual Return on Plan Assets</td><td>14.8</td><td></td><td>20.3</td><td></td></tr><tr><td>Employer Contribution (Withdrawal)</td><td>( 9.4 )</td><td></td><td>( 3.4 )</td><td></td></tr><tr><td>Participant Contributions</td><td>1.4</td><td></td><td>2.4</td><td></td></tr><tr><td>Benefits Paid</td><td>( 6.4 )</td><td></td><td>( 8.1 )</td><td></td></tr><tr><td>Fair Value, End of Year</td><td>$ 174.2</td><td></td><td>$ 173.8</td><td></td></tr><tr><td>Funded Status, End of Year</td><td>$ 101.8</td><td></td><td>$ 99.9</td><td></td></tr><tr><td></td><td></td><td></td></tr><tr><td>Net Postretirement Health and Life Amounts Recognized in Consolidated Balance Sheet Consist of:</td><td></td><td></td></tr><tr><td>Non-Current Assets</td><td>$ 107.6</td><td>$ 106.3</td></tr><tr><td>Current Liabilities</td><td>$( 0.2 )</td><td>$( 0.2 )</td></tr><tr><td>Non-Current Liabilities</td><td>$( 5.6 )</td><td>$( 6.2 )</td></tr></table>
table
—
monetaryItemType
table: <entity> — </entity> <entity type> monetaryItemType </entity type> <context> Plan Amendments (b) Plan Amendments (b) | — | ( 29.1 ) </context>
us-gaap:DefinedBenefitPlanPlanAmendments