XML 83 R70.htm IDEA: XBRL DOCUMENT v3.20.2
Leases - Revenue Related to Leases (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Lessor, Lease, Description [Line Items]        
Lease income   $ 252 $ 794 $ 675
Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income $ 275 252 794 675
Energy revenue        
Lessor, Lease, Description [Line Items]        
Lease income   163 456 422
Energy revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 156 163 456 422
Capacity revenue        
Lessor, Lease, Description [Line Items]        
Lease income   89 338 253
Capacity revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 119 89 338 253
Conventional Generation        
Lessor, Lease, Description [Line Items]        
Lease income   91 344 257
Conventional Generation | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 122 91 344 257
Conventional Generation | Energy revenue        
Lessor, Lease, Description [Line Items]        
Lease income   2   4
Conventional Generation | Energy revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 3 2 6 4
Conventional Generation | Capacity revenue        
Lessor, Lease, Description [Line Items]        
Lease income   89   253
Conventional Generation | Capacity revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 119 89 338 253
Renewables        
Lessor, Lease, Description [Line Items]        
Lease income   160 449 416
Renewables | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 153 160 449 416
Renewables | Energy revenue        
Lessor, Lease, Description [Line Items]        
Lease income   160   416
Renewables | Energy revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 153 160 449 416
Renewables | Capacity revenue        
Lessor, Lease, Description [Line Items]        
Lease income   0   0
Renewables | Capacity revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 0 0 0 0
Thermal        
Lessor, Lease, Description [Line Items]        
Lease income   1 1 2
Thermal | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 0 1 1 2
Thermal | Energy revenue        
Lessor, Lease, Description [Line Items]        
Lease income   1   2
Thermal | Energy revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income 0 1 1 2
Thermal | Capacity revenue        
Lessor, Lease, Description [Line Items]        
Lease income   0   0
Thermal | Capacity revenue | Operating Segments        
Lessor, Lease, Description [Line Items]        
Lease income $ 0 $ 0 $ 0 $ 0