Dispositions (Narrative) (Details) - Discontinued Operations, Held-for-sale - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Oct. 25, 2023	Oct. 04, 2023
Brookfield Renewable Partners | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received					$ 1,100
Arclight | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration to be received						$ 243
Commercial Renewables
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Pre-tax impairment	$ 169	$ 1,200	$ 220	$ 1,700
Noncontrolling interest balance	$ 1,800			$ 1,600