Investments in Unconsolidated Affiliates (Investments in Equity Method Unconsolidated Affiliates) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments In Unconsolidated Affiliates [Line Items]
Investments	$ 455	$ 457
Equity in earnings (losses) of unconsolidated affiliates	113	62	$ (2,005)
Electric Utilities and Infrastructure
Investments In Unconsolidated Affiliates [Line Items]
Investments	99	104
Equity in earnings (losses) of unconsolidated affiliates	7	7	(1)
Gas Utilities and Infrastructure
Investments In Unconsolidated Affiliates [Line Items]
Investments	240	231
Equity in earnings (losses) of unconsolidated affiliates	21	8	(2,017)
Other
Investments In Unconsolidated Affiliates [Line Items]
Investments	116	122
Equity in earnings (losses) of unconsolidated affiliates	$ 85	$ 47	$ 13