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Investments In and Advances To Affiliates - Summary of Financial Information of Affiliates & Subsidiaries (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended			6 Months Ended	12 Months Ended
	Dec. 06, 2023	Feb. 28, 2023	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Feb. 09, 2024	Feb. 05, 2024	Sep. 30, 2023	Mar. 04, 2021
Investments in and Advances to Affiliates [Line Items]
Gain (Loss) on Disposition of Business							$ 134	$ (9)	$ (1,683)
Noncash or Part Noncash Divestiture, Amount of Consideration Received							$ 239	$ 24	9
Business Combination, Consideration Transferred									$ 28
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain				$ 178	$ 36	$ 214
Shares Issued, Price Per Share							$ 25.77						$ 25.88
Subsequent Event [Member]
Investments in and Advances to Affiliates [Line Items]
Shares Issued, Price Per Share											$ 25.73
Uplight
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage							29.00%	29.00%		25.00%
Fluence [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Ownership Percentage							29.00%	34.00%				33.00%
Fluence [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Realized Gain (Loss) on Disposal	$ 136
sPower [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Other than Temporary Impairment								$ 175
Business Combination, Consideration Transferred					$ 102
Equity Method Investment, Realized Gain (Loss) on Disposal			$ 35
Barry
Investments in and Advances to Affiliates [Line Items]
Other Long-term Debt							$ 41	$ 39
sPower OpCo B [Member]
Investments in and Advances to Affiliates [Line Items]
Equity Method Investment, Net Sales Proceeds		$ 98
Equity Method Investment, Realized Gain (Loss) on Disposal		5
Equity Method Investment, Amount Sold		$ 196