Investments In and Advances To Affiliates (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended
	Feb. 28, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 19, 2023	Jun. 30, 2023	Dec. 31, 2022	Mar. 31, 2022	Mar. 04, 2021
Investments in and Advances to Affiliates [Line Items]
Noncash or Part Noncash Divestiture, Amount of Consideration Received				$ 215	$ 15
Revenue		$ 3,434	$ 3,627	9,700	9,557
Operating loss		918	892	2,010	1,985
Gain (Loss) on Disposition of Business		0	1	(4)	0
Income (Loss) from Equity Method Investments		$ (14)	$ (26)	(43)	(54)
Contributions and loans to equity affiliates				147	202
Shares Issued, Price Per Share									$ 25.79	$ 25.88
sPower OpCo B
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage	26.00%							50.00%
Grupo Energia Gas Panama
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage						24.00%	49.00%
Majority Owned Affiliate [Member]
Investments in and Advances to Affiliates [Line Items]
Revenue				1	1
Operating loss				(1)	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest				(1)	0
Net Income (Loss) attributable to affiliates				(1)	0
Minority Owned Affiliates [Member]
Investments in and Advances to Affiliates [Line Items]
Revenue				2,089	1,218
Operating loss				(21)	(322)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest				(129)	(410)
Net Income (Loss) attributable to affiliates				$ (111)	$ (332)
sPower OpCo B
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage Sold								49.00%
Proceeds from Sale of Equity Method Investments	$ 98
Equity Method Investment, Realized Gain (Loss) on Disposal (less than)	5
Equity Method Investment, Amount Sold	$ 196