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Compensation and Benefit Plans (Pension Assets Fair Value) (Details) - Pension Plans - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 3,574 | $ 3,545 |
Receivables and payables, net | 35 | (83) |
Net plan assets available for benefits | $ 3,609 | $ 3,462 | $ 4,296
Publicly traded equity investments located in the US (percent) | 62.00% | 61.00% |
Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 654 | $ 728 |
Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1,460 | 1,317 |
NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1,460 | 1,500 |
Government and agency securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 608 | 574 |
Government and agency securities | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 256 | 281 |
Government and agency securities | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 352 | 293 |
Government and agency securities | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Corporate stocks |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 181 | $ 230 |
Corporate stocks | Russell Indexes |  |  |
Pension and Other Postretirement Benefits |  |  |
Performance percentage benchmark, percentage | 36.00% | 36.00% |
Corporate stocks | MSCI |  |  |
Pension and Other Postretirement Benefits |  |  |
Performance percentage benchmark, percentage | 64.00% | 64.00% |
Corporate stocks | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 176 | $ 227 |
Corporate stocks | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 5 | 3 |
Corporate stocks | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Corporate bonds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 1,057 | $ 973 |
Corporate bonds | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 0 |  |
Actual plan asset allocations, percentage | 57.00% | 56.00% |
Corporate bonds | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 1,057 | $ 973 |
Corporate bonds | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Collateralized mortgage obligations and other asset backed securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 78 | 67 |
Common/collective funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 584 | $ 658 |
Common/collective funds | Standard and Poor's 500 |  |  |
Pension and Other Postretirement Benefits |  |  |
Performance percentage benchmark, percentage | 41.00% | 41.00% |
Common/collective funds | MSCI all country world index exUS |  |  |
Pension and Other Postretirement Benefits |  |  |
Performance percentage benchmark, percentage | 40.00% | 46.00% |
Common/collective funds | Non-index U.S. equity fund |  |  |
Pension and Other Postretirement Benefits |  |  |
Performance percentage benchmark, percentage | 16.00% | 11.00% |
Common/collective funds | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 0 |  |
Common/collective funds | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Common/collective funds | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 584 | $ 658 |
Partnerships/joint ventures |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 657 | 613 |
Actual plan asset allocations, percentage | 17.00% |  |
Partnerships/joint ventures | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 0 |  |
Partnerships/joint ventures | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Partnerships/joint ventures | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 657 | 613 |
Other investment entities |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 58 | 63 |
Other investment entities | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Other investment entities | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Other investment entities | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 58 | 63 |
Registered investment companies |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 365 | 365 |
Registered investment companies | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 212 | 206 |
Registered investment companies | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Registered investment companies | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 153 | 159 |
Interest-bearing cash |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 10 | 14 |
Interest-bearing cash | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 10 | 14 |
Interest-bearing cash | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Interest-bearing cash | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Other investments |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 54 | 55 |
Other investments | Level 1 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 0 |  |
Other investments | Level 2 |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | 46 | 48 |
Other investments | NAV |  |  |
Pension and Other Postretirement Benefits |  |  |
Fair value of plan assets | $ 8 | $ 7 |
Private equity and venture capital funds including branded consumer products, clean and information technology and healthcare |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage | 74.00% | 76.00% |
Asset backed securities including distressed mortgages |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage |  | 18.00% |
Broad range of financial assets in all global markets |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage | 5.00% | 2.00% |
Domestic mortgage backed securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage | 68.00% | 64.00% |
High yield debt securities |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage | 32.00% | 36.00% |
Equity Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage | 28.00% | 22.00% |
Fixed Income Funds |  |  |
Pension and Other Postretirement Benefits |  |  |
Actual plan asset allocations, percentage | 13.00% | 21.00% |
SCE |  |  |
Pension and Other Postretirement Benefits |  |  |
Net plan assets available for benefits | $ 3,415 | $ 3,275 | $ 4,061

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