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Income Taxes (NOL and Carryforwards) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Carryforwards |  |  |
Loss carryforwards | $ 2,810 |  |
Credit carryforwards | 545 |  |
Deferred tax expense | 43 | $ (296) | $ (284)
Capistrano Wind |  |  |
Carryforwards |  |  |
Deferred tax expense | 223 | 218 |
Expire in 2022 |  |  |
Carryforwards |  |  |
Loss carryforwards | 7 |  |
Credit carryforwards | 0 |  |
Expire between 2023 to 2026 |  |  |
Carryforwards |  |  |
Loss carryforwards | 30 |  |
Credit carryforwards | 0 |  |
Expire between 2029 to 2043 |  |  |
Carryforwards |  |  |
Loss carryforwards | 1,504 |  |
Credit carryforwards | 535 |  |
No expiration date |  |  |
Carryforwards |  |  |
Loss carryforwards | 1,269 |  |
Credit carryforwards | 10 |  |
SCE |  |  |
Carryforwards |  |  |
Loss carryforwards | 1,858 |  |
Credit carryforwards | 60 |  |
Deferred tax expense | 62 | $ (263) | $ (243)
SCE | Expire in 2022 |  |  |
Carryforwards |  |  |
Loss carryforwards | 7 |  |
Credit carryforwards | 0 |  |
SCE | Expire between 2023 to 2026 |  |  |
Carryforwards |  |  |
Loss carryforwards | 25 |  |
Credit carryforwards | 0 |  |
SCE | Expire between 2029 to 2043 |  |  |
Carryforwards |  |  |
Loss carryforwards | 702 |  |
Credit carryforwards | 60 |  |
SCE | No expiration date |  |  |
Carryforwards |  |  |
Loss carryforwards | 1,124 |  |
Credit carryforwards | $ 0 |  |

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