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Borrowings and Other Financing Instruments Forward Equity Agreement (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from issuance of common stock			$ 156	$ 13
Issuances of common stock	$ 14	$ 10	185	40
Dividend Reinvestment Program
Forward Contract Indexed to Issuer's Equity [Line Items]
Proceeds from issuance of common stock			$ 34	$ 38

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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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