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Compensation and Benefit Plans (Plan Assets and Obligation) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term liabilities | $ (422) | $ (496) |
SCE |  |  |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term liabilities | (105) | (111) |
Pension Plans |  |  |
Change in projected benefit obligation |  |  |
Projected benefit obligation at beginning of year | 4,171 | 4,476 |
Service cost | 120 | 130 | $ 121
Interest cost | 111 | 103 | 124
Actuarial (gain) loss | (589) | (245) |
Benefits paid | (289) | (293) |
Projected benefit obligation at end of year | 3,524 | 4,171 | 4,476
Change in plan assets |  |  |
Fair value of plan assets at beginning of year | 4,296 | 4,171 |
Actual return on plan assets | (575) | 368 |
Employer contributions | 30 | 50 |
Benefits paid | (289) | (293) |
Fair value of plan assets at end of year | 3,462 | 4,296 | $ 4,171
Funded status at end of year | (62) | 125 |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term assets | 139 | 384 |
Current liabilities | (26) | (26) |
Long-term liabilities | (175) | (233) |
Amounts recognized in the consolidated balance sheets | (62) | 125 |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Net loss | 17 | 74 |
Amounts recognized as a regulatory (liability)/asset | (139) | (395) |
Accumulated benefit obligation at end of year | 3,401 | 3,947 |
Pension plans with an accumulated benefit obligation in excess of plan assets: |  |  |
Projected benefit obligation | 3,524 | 4,171 |
Accumulated benefit obligation | 3,401 | 3,947 |
Fair value of plan assets | $ 3,462 | $ 4,296 |
Weighted average assumptions used to determine obligations at end of year: |  |  |
Discount rate | 5.36% | 2.75% | 2.38%
Rate of compensation increase | 4.00% | 4.00% |
Assumed health care cost trend rates: |  |  |
Long-term payable | $ 93 | $ 132 |
Gain (loss) from change in discount rate | 1,000 | 159 |
Gain (loss) from valuation and experience | 456 | 69 |
Pension Plans | SCE |  |  |
Pension and Other Postretirement Benefits |  |  |
Expected contributions | 8 |  |
Change in projected benefit obligation |  |  |
Projected benefit obligation at beginning of year | 3,694 | 3,984 |
Service cost | 118 | 127 | $ 119
Service cost, excluding certain liabilities | 115 | 126 |
Interest cost | 101 | 95 | 114
Interest cost, excluding certain liabilities | 97 | 92 |
Actuarial (gain) loss | (503) | (246) |
Benefits paid | (244) | (262) |
Projected benefit obligation at end of year | 3,159 | 3,694 | 3,984
Change in plan assets |  |  |
Fair value of plan assets at beginning of year | 4,061 | 3,940 |
Actual return on plan assets | (544) | 348 |
Employer contributions | 2 | 35 |
Benefits paid | (244) | (262) |
Fair value of plan assets at end of year | 3,275 | 4,061 | $ 3,940
Funded status at end of year | 116 | 367 |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term assets | 128 | 384 |
Current liabilities | (2) | (2) |
Long-term liabilities | (10) | (15) |
Amounts recognized in the consolidated balance sheets | 116 | 367 |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Net loss | 8 | 12 |
Amounts recognized as a regulatory (liability)/asset | (139) | (395) |
Accumulated benefit obligation at end of year | 3,049 | 3,491 |
Pension plans with an accumulated benefit obligation in excess of plan assets: |  |  |
Projected benefit obligation | 3,159 | 3,694 |
Accumulated benefit obligation | 3,049 | 3,491 |
Fair value of plan assets | $ 3,275 | $ 4,061 |
Weighted average assumptions used to determine obligations at end of year: |  |  |
Discount rate | 5.36% | 2.75% |
Rate of compensation increase | 4.00% | 4.00% |
Assumed health care cost trend rates: |  |  |
Ultimate rate | 4.50% | 4.50% | 5.00%
Net loss reclassified from other comprehensive loss | $ 3 | $ 32 |
Gain (loss) from change in discount rate | 929 | 149 |
Gain (loss) from valuation and experience | 430 | 83 |
Pension Plans | Edison International Parent and Other |  |  |
Pension and Other Postretirement Benefits |  |  |
Expected contributions | 35 |  |
Postretirement Benefits Other Than Pensions |  |  |
Pension and Other Postretirement Benefits |  |  |
Expected contributions | 8 |  |
Change in projected benefit obligation |  |  |
Projected benefit obligation at beginning of year | 1,904 | 2,073 |
Service cost | 34 | 40 | $ 38
Interest cost | 56 | 52 | 63
Actuarial (gain) loss | (598) | (190) |
Plan participants' contributions | 29 | 29 |
Benefits paid | (94) | (100) |
Projected benefit obligation at end of year | 1,331 | 1,904 | 2,073
Change in plan assets |  |  |
Fair value of plan assets at beginning of year | 2,772 | 2,717 |
Actual return on plan assets | (527) | 119 |
Employer contributions | 7 | 7 |
Plan participants' contributions | 29 | 29 |
Benefits paid | (94) | (100) |
Fair value of plan assets at end of year | 2,187 | 2,772 | $ 2,717
Funded status at end of year | 856 | 868 |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term assets | 871 | 885 |
Current liabilities | (8) | (8) |
Long-term liabilities | (7) | (9) |
Amounts recognized in the consolidated balance sheets | 856 | 868 |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Net loss | (2) | 1 |
Amounts recognized as a regulatory (liability)/asset | $ (867) | $ (886) |
Weighted average assumptions used to determine obligations at end of year: |  |  |
Discount rate | 5.43% | 2.95% | 2.67%
Assumed health care cost trend rates: |  |  |
Rate assumed for following year | 6.75% | 6.25% |
Ultimate rate | 5.00% | 5.00% | 5.00%
Gain (loss) from change in discount rate | $ 546 | $ 83 |
Gain (loss) from valuation and experience |  | 113 |
Postretirement Benefits Other Than Pensions | SCE |  |  |
Change in projected benefit obligation |  |  |
Projected benefit obligation at beginning of year | 1,895 | 2,064 |
Service cost | 34 | 40 | $ 37
Interest cost | 55 | 52 | 63
Actuarial (gain) loss | (596) | (190) |
Plan participants' contributions | 29 | 29 |
Benefits paid | (94) | (100) |
Projected benefit obligation at end of year | 1,323 | 1,895 | 2,064
Change in plan assets |  |  |
Fair value of plan assets at beginning of year | 2,772 | 2,717 |
Actual return on plan assets | (527) | 119 |
Employer contributions | 7 | 7 |
Plan participants' contributions | 29 | 29 |
Benefits paid | (94) | (100) |
Fair value of plan assets at end of year | 2,187 | 2,772 | $ 2,717
Funded status at end of year | 864 | 877 |
Amounts recognized in the consolidated balance sheets consist of: |  |  |
Long-term assets | 871 | 885 |
Current liabilities | (7) | (8) |
Amounts recognized in the consolidated balance sheets | 864 | 877 |
Amounts recognized in accumulated other comprehensive loss consist of: |  |  |
Amounts recognized as a regulatory (liability)/asset | $ (867) | $ (886) |
Weighted average assumptions used to determine obligations at end of year: |  |  |
Discount rate | 5.43% | 2.95% |
Assumed health care cost trend rates: |  |  |
Rate assumed for following year | 6.75% | 6.25% |
Ultimate rate | 5.00% | 5.00% |
Gain (loss) from change in discount rate | $ 543 |  |

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