v3.19.1
Revenue From Contracts with Customers Disaggregation of Revenues (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Disaggregation of Revenue [Line Items]    
Commodity revenue $ 2,538 $ 2,396
Revenues [1] 2,599 2,009
West [Member]    
Disaggregation of Revenue [Line Items]    
Revenues [1] 682 480
Texas [Member]    
Disaggregation of Revenue [Line Items]    
Revenues [1] 743 140
East [Member]    
Disaggregation of Revenue [Line Items]    
Revenues [1] 689 614
Retail [Member]    
Disaggregation of Revenue [Line Items]    
Revenues [1] 998 938
Energy and Other Products [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 1,209 1,078
Energy and Other Products [Member] | West [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 292 199
Energy and Other Products [Member] | Texas [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 302 304
Energy and Other Products [Member] | East [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 203 132
Energy and Other Products [Member] | Retail [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 412 443
Energy and Other Products [Member] | Intersegment Eliminations [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 0 0
Capacity Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 244 194
Capacity Revenue [Member] | West [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 35 19
Capacity Revenue [Member] | Texas [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 32 26
Capacity Revenue [Member] | East [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 177 149
Capacity Revenue [Member] | Retail [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 0 0
Capacity Revenue [Member] | Intersegment Eliminations [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 0 0
Revenues Relating to Physical or Executory Contracts - Third Party [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 1,453 1,272
Revenues Relating to Physical or Executory Contracts - Third Party [Member] | West [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 327 218
Revenues Relating to Physical or Executory Contracts - Third Party [Member] | Texas [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 334 330
Revenues Relating to Physical or Executory Contracts - Third Party [Member] | East [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 380 281
Revenues Relating to Physical or Executory Contracts - Third Party [Member] | Retail [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 412 443
Revenues Relating to Physical or Executory Contracts - Third Party [Member] | Intersegment Eliminations [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue 0 0
Affiliate Revenue [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue [2] 0 0
Affiliate Revenue [Member] | West [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue [2] 11 8
Affiliate Revenue [Member] | Texas [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue [2] 14 4
Affiliate Revenue [Member] | East [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue [2] 27 21
Affiliate Revenue [Member] | Retail [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue [2] 3 1
Affiliate Revenue [Member] | Intersegment Eliminations [Member]    
Disaggregation of Revenue [Line Items]    
Commodity revenue [2] (55) (34)
Revenues Relating to Leases and Derivative Instruments [Member]    
Disaggregation of Revenue [Line Items]    
Revenues [3] $ 1,146 $ 737
[1] Includes intersegment revenues of $162 million and $114 million in the West, $211 million and $(67) million in Texas, $137 million and $115 million in the East and $3 million and $1 million in Retail for the three months ended March 31, 2019 and 2018, respectively.
[2] Affiliate energy, other and capacity revenues reflect revenues on transactions between wholesale and retail affiliates excluding affiliate activity related to leases and derivative instruments. All such activity supports retail supply needs from the wholesale business and/or allows for collateral margin netting efficiencies at Calpine.
[3] Revenues relating to contracts accounted for as leases and derivatives include energy and capacity revenues relating to PPAs that we are required to account for as operating leases and physical and financial commodity derivative contracts, primarily relating to power, natural gas and environmental products. Revenue related to derivative instruments includes revenue recorded in Commodity revenue and mark-to-market gain (loss) within our operating revenues on our Consolidated Condensed Statements of Operations.