XML 66 R55.htm IDEA: XBRL DOCUMENT v3.20.2
Acquisitions, Discontinued Operations and Dispositions - Discontinued Operations Narrative (Details)
$ in Millions
9 Months Ended
Feb. 06, 2018
USD ($)
extension
Sep. 30, 2020
USD ($)
MW
Sep. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Feb. 04, 2019
USD ($)
MW
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Generation capacity (in MW) | MW   23,000      
South Central Portfolio | Discontinued Operations, Disposed of by Sale          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Cash consideration         $ 1,000
Generation capacity (in MW) | MW         1,153
Carlsbad Energy Holdings LLC | Discontinued Operations, Disposed of by Sale          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Cash consideration $ 385        
Percentage of ownership sold 100.00%        
Lease and easement agreement, number of extensions | extension 2        
Lease renewal term 10 years        
Additional commitments related to project   $ 23   $ 23  
Other | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Proceeds from other asset sales   $ 15 $ 22