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Investments (Tax Equity Investments - Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Carrying Value of Tax Equity Investments	$ 707		$ 707		$ 714
Income Tax credits and other income tax benefits	38	$ 37	98	$ 112
Tax Equity Investments Amortization Expense	$ 30	$ 33	$ 87	$ 100

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Income Tax Credits And Other Income Tax Benefits

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