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v3.24.0.1

Income Tax Expense - Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred Income Tax Assets |  |
Employee Benefits and Compensation | $ 29.3 | $ 46.4
Property-Related | 58.1 | 61.9
NOL Carryforwards | 13.0 | 16.7
Capital Loss Carryforwards | 2.1 | 13.1
Tax Credit Carryforwards | 557.4 | 548.7
Power Sales Agreements | 9.0 | 13.7
Regulatory Liabilities | 89.0 | 95.5
Other | 8.7 | 28.1
Gross Deferred Income Tax Assets | 766.6 | 824.1
Deferred Income Tax Asset Valuation Allowance | (58.0) | (60.2)
Total Deferred Income Tax Assets | 708.6 | 763.9
Deferred Income Tax Liabilities |  |
Deferred Gain | 7.9 | 7.9
Property-Related | 632.0 | 661.7
Regulatory Asset for Benefit Obligations | 48.1 | 57.7
Unamortized Investment Tax Credits | 29.6 | 30.0
Partnership Basis Differences | 156.5 | 126.0
Fuel Adjustment Clause | 1.9 | 10.7
Regulatory Assets | 25.3 | 28.0
Total Deferred Income Tax Liabilities | 901.3 | 922.0
Net Deferred Income Taxes | $ 192.7 | $ 158.1

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