Long-Term Investments (Equity Method Investments) (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Long-Term Investments [Line Items]
Long-Term Investments		$ 295	$ 624
Partnerships And Corporate Joint Ventures [Member]
Long-Term Investments [Line Items]
Long-Term Investments	[1]	$ 17	$ 306

[1] During the year ended December 31, 2023, there were no dividends from these investments. During the years ended December 31, 2022 and 2021, dividends from these investments were $8 million and $17 million, respectively. See Note 3. Asset Dispositions and Impairments for information regarding the sales of our ownership interest in the Ocean Wind 1 project and Kalaeloa.