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Income Taxes Schedule of Deferred tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax assets:
Employee benefits	$ 89	$ 99
Deferred income taxes	28	21
Deferred Tax Assets, tax credits, net of valuation allowance	69	73
Deferred Tax Assets, Derivative Instruments	51	57
Total deferred income tax assets	251	250
Deferred income tax liabilities:
Depreciation and amortization	633	578
Regulatory assets	169	146
Deferred Tax Liabilities, Other	13	14
Deferred Tax Liabilities, Gross, Noncurrent	815	738
Total deferred income tax liabilities	564	488
Deferred Tax Assets, Tax Credit Carryforwards	$ 14	$ 0

X

- Definition

The sum of the tax effects as of the balance sheet date of the amount of tax credits available for future use, net of any valuation allowance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from derivative instruments.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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