Investments In and Advances To Affiliates (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		6 Months Ended
	Feb. 28, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	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				$ 218	$ 15
Revenue		$ 3,027	$ 3,078	6,266	5,930
Operating loss		498	563	1,092	1,093
Gain (Loss) on Disposition of Business		(4)	(2)	(4)	(1)
Income (Loss) from Equity Method Investments		$ (25)	$ 5	(29)	(28)
Contributions and loans to equity affiliates				112	169
Shares Issued, Price Per Share							$ 25.81	$ 25.88
sPower OpCo B
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage	26.00%					50.00%
Majority Owned Affiliate [Member]
Investments in and Advances to Affiliates [Line Items]
Revenue				1	1
Operating loss				0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest				0	0
Net Income (Loss) attributable to affiliates				0	0
Minority Owned Affiliates [Member]
Investments in and Advances to Affiliates [Line Items]
Revenue				1,370	792
Operating loss				(34)	(249)
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest				(91)	(323)
Net Income (Loss) attributable to affiliates				$ (72)	$ (275)
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