Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosures [Line Items]
Effective Income Tax Rate Reconciliation, Percent	12.00%	45.00%	39.00%	42.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Income Tax Expense (Benefit)	$ (19)	$ (59)	$ 41	$ (51)
Gener Subsidiary [Member]
Income Tax Disclosures [Line Items]
Income Tax Expense (Benefit)	$ (220)
Clean Energy
Income Tax Disclosures [Line Items]
Income Tax Expense (Benefit)		$ 39		46
Fluence [Member]
Income Tax Disclosures [Line Items]
Income Tax Expense (Benefit)				$ 13