XML 48 R37.htm IDEA: XBRL DOCUMENT v3.20.2
Variable Interest Entities and Unconsolidated Investments (VIE Texuals) (Details)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
MW
Mar. 31, 2020
USD ($)
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
MW
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
MW
Variable Interest Entity [Line Items]            
Equity method investment, ownership percentage 50.00%     50.00%    
Adjustments to additional paid in capital, other   $ 67        
Equity method investment, summarized financial information, debt $ 276     $ 276   $ 299
Prorata share of equity method investment, summarized financial information, debt 138     138   $ 150
Return on investments from unconsolidated subsidiaries       0 $ 11  
Variable interest entity, financial or other support, amount $ 0   $ 0 $ 0    
Greenfield            
Variable Interest Entity [Line Items]            
Power generation capacity | MW 1,038     1,038    
Equity method investment, ownership percentage 50.00%     50.00%    
Return on investments from unconsolidated subsidiaries   $ 0    
Calpine Receivables            
Variable Interest Entity [Line Items]            
Equity method investment, ownership percentage 100.00%     100.00%    
Variable interest entity, reporting entity involvement, maximum loss exposure, amount $ 51     $ 51    
Whitby            
Variable Interest Entity [Line Items]            
Return on investments from unconsolidated subsidiaries     $ 0   $ 11  
Variable Interest Entity, Primary Beneficiary            
Variable Interest Entity [Line Items]            
Power generation capacity | MW 7,354     7,354   6,669
Russell City Energy            
Variable Interest Entity [Line Items]            
Minority interest ownership percentage by noncontrolling third party owners           25.00%
Payments to Acquire Business   35        
Acquisition of noncontrolling interest   49        
Working Capital Adjustment to Sale Price   $ 14