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Dispositions (Narrative) (Details) - Discontinued Operations, Held-for-sale - Commercial Renewables - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Noncontrolling interest balance $ 66 $ 66
Pre-tax impairment $ 268 $ 278