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Acquisitions and Dispositions - Dispositions (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 01, 2022
Feb. 03, 2021
Jun. 30, 2022
Jun. 30, 2022
Jun. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Gain on sale     $ 32 $ 29 $ 17
Agua Caliente Solar Project | Disposal Group, Disposed of by Sale, Not Discontinued Operations          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Percentage of ownership sold   35.00%      
Cash consideration   $ 202      
Gain on sale   17      
Cash disposed   $ 7      
Watson Facility          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Ownership interest 49.00%        
Proceeds from sale of investment $ 59        
Watson Facility | West/Services/Other          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Gain on sale $ 46