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Income Taxes (Schedule Of Principal Components Of Net Deferred Tax Liability) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred Tax Liabilities |  |
Accelerated depreciation and other property differences | $ 2,527.9 | $ 2,454.4
Other regulatory assets | 348.4 | 308.6
Total Deferred Tax Liabilities | 2,876.3 | 2,763.0
Deferred Tax Assets |  |
Other regulatory liabilities and deferred investment tax credits (including TCJA) | 294.3 | 284.7
Pension and other postretirement/postemployment benefits | 124.7 | 104.8
Net operating loss carryforward and AMT credit carryforward | 491.0 | 545.9
Environmental liabilities | 20.7 | 22.2
Other accrued liabilities | 55.9 | 42.1
Other, net | 43.0 | 111.7
Total Deferred Tax Assets | 1,029.6 | 1,111.4
Deferred Tax Assets, Valuation Allowance | (7.8) | (7.8)
Deferred Tax Assets, Net of Valuation Allowance | 1,021.8 | 1,103.6
Net Deferred Tax Liabilities | $ 1,854.5 | $ 1,659.4

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