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v3.19.3.a.u2

Revenue (Summary of Revenue) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total operating revenue | $ 2,970 | $ 3,741 | $ 2,812 | $ 2,824 | $ 3,009 | $ 4,269 | $ 2,815 | $ 2,564 | $ 12,347 | $ 12,657 | $ 12,320
SCE |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from contracts with customers |  |  |  |  |  |  |  |  | 11,167 | 12,130 |
Alternative revenue programs and other operating revenue |  |  |  |  |  |  |  |  | 1,139 | 481 |
Total operating revenue | 2,958 | $ 3,732 | 2,800 | $ 2,816 | 2,994 | $ 4,260 | $ 2,803 | $ 2,554 | 12,306 | 12,611 | 12,254
Receivables from contracts with customers | 1,100 |  |  |  |  |  |  |  | 1,100 |  |
Accrued unbilled revenues | $ 488 |  |  |  | $ 482 |  |  |  | 488 | 482 |
SCE | Earning Activities |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from contracts with customers |  |  |  |  |  |  |  |  | 6,512 | 6,519 |
Alternative revenue programs and other operating revenue |  |  |  |  |  |  |  |  | 166 | 41 |
Total operating revenue |  |  |  |  |  |  |  |  | 6,678 | 6,560 | 6,611
SCE | Cost- Recovery Activities |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues from contracts with customers |  |  |  |  |  |  |  |  | 4,655 | 5,611 |
Alternative revenue programs and other operating revenue |  |  |  |  |  |  |  |  | 973 | 440 |
Total operating revenue |  |  |  |  |  |  |  |  | $ 5,628 | $ 6,051 | $ 5,643
California Public Utilities Commission | General Rate Case, 2018 | SCE |  |  |  |  |  |  |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |
Reduction in revenue |  |  | $ 265 |  |  |  |  |  |  |  |

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