Investments In and Advances To Affiliates (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended				9 Months Ended		18 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Mar. 31, 2022	Nov. 01, 2021	Mar. 31, 2021	Mar. 04, 2021
Investments in and Advances to Affiliates [Line Items]
Revenue	$ 3,627		$ 3,036		$ 9,557	$ 8,371
Operating margin (loss)	892		760		1,985	2,152
Gain (Loss) on Disposition of Business	1		22		0	81
Income (Loss) from Equity Method Investments	$ (26)		$ 25		(54)	(15)
Contributions and loans to equity affiliates					$ 202	$ 321
Shares Issued, Price Per Share								$ 25.85			$ 25.88
Uplight [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage			29.60%	32.30%		29.60%
Guacolda [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage			50.00%			50.00%
Fluence [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage		34.20%		43.20%						50.00%
Grupo Energia Gas Panama
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage	49.00%				49.00%		49.00%
Qatar Investment Authority
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage Sold				13.60%
Equity Method Investment, Purchase Price Agreement				$ 125
Majority Owned Affiliate [Member]
Investments in and Advances to Affiliates [Line Items]
Revenue					$ 1	$ 1
Operating margin (loss)					0	0
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest					0	(4)
Minority Owned Affiliates [Member]
Investments in and Advances to Affiliates [Line Items]
Revenue					1,218	866
Operating margin (loss)					(322)	45
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest					$ (410)	(108)
sPower [Member]
Investments in and Advances to Affiliates [Line Items]
Business Combination, Consideration Transferred						102
Fluence [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Realized Gain (Loss) on Disposal (less than)						60
Shares, Issued									35,650
Proceeds from Divestiture of Businesses		$ 936
Shares Issued, Price Per Share									$ 28
Guacolda [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Purchase Price Agreement						34
Equity Method Investment, Realized Gain (Loss) on Disposal (less than)			$ 34
Grupo Energía Gas Panamá
Investments in and Advances to Affiliates [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable						21	$ 45
Uplight [Member]
Investments in and Advances to Affiliates [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable						37
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss						$ 11