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Borrowings and Other Financing Instruments Equity through DRIP and Benefits Program (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from issuance of common stock	$ 8	$ 6
Issuances of common stock	12	18
Dividend Reinvestment Program
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from issuance of common stock	$ 17	$ 15

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The cash inflow from the additional capital contribution to the entity.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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