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Compensation and Benefit Plans (OPEB Assets Fair Value) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Domestic mortgage backed securities |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage |  | 20.00% |
Postretirement Benefits Other Than Pensions |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 2,193 | $ 2,773 |
Receivables and payables, net | (6) | (1) |
Net plan assets available for benefits | $ 2,187 | $ 2,772 | $ 2,717
Publicly traded equity investments located in the US (percent) | 70.00% | 68.00% |
Postretirement Benefits Other Than Pensions | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 380 | $ 1,002 |
Postretirement Benefits Other Than Pensions | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 1,281 | 1,120 |
Postretirement Benefits Other Than Pensions | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 532 | 651 |
Postretirement Benefits Other Than Pensions | Government and agency securities |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 526 | 823 |
Postretirement Benefits Other Than Pensions | Government and agency securities | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 222 | 813 |
Postretirement Benefits Other Than Pensions | Government and agency securities | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 304 | 10 |
Postretirement Benefits Other Than Pensions | Government and agency securities | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Corporate stocks |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 105 | $ 148 |
Postretirement Benefits Other Than Pensions | Corporate stocks | Russell Indexes |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Performance percentage benchmark, percentage | 73.00% | 73.00% |
Postretirement Benefits Other Than Pensions | Corporate stocks | MSCI All Country World Index |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Performance percentage benchmark, percentage | 27.00% | 27.00% |
Postretirement Benefits Other Than Pensions | Corporate stocks | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 103 | $ 145 |
Postretirement Benefits Other Than Pensions | Corporate stocks | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 2 | 3 |
Postretirement Benefits Other Than Pensions | Corporate stocks | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Corporate notes and bonds |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 860 | 997 |
Postretirement Benefits Other Than Pensions | Corporate notes and bonds | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Corporate notes and bonds | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 860 | 997 |
Postretirement Benefits Other Than Pensions | Corporate notes and bonds | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Common/collective funds |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 413 | $ 544 |
Postretirement Benefits Other Than Pensions | Common/collective funds | Non-index U.S. equity fund |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 27.00% | 25.00% |
Postretirement Benefits Other Than Pensions | Common/collective funds | MSCI All Country World Index Investable Market Index |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 53.00% | 65.00% |
Postretirement Benefits Other Than Pensions | Common/collective funds | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Postretirement Benefits Other Than Pensions | Common/collective funds | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Common/collective funds | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 413 | 544 |
Postretirement Benefits Other Than Pensions | Partnerships/joint ventures |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 119 | 107 |
Postretirement Benefits Other Than Pensions | Partnerships/joint ventures | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Partnerships/joint ventures | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Partnerships/joint ventures | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 119 | 107 |
Postretirement Benefits Other Than Pensions | Registered investment companies |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 55 | 44 |
Postretirement Benefits Other Than Pensions | Registered investment companies | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 55 | 44 |
Postretirement Benefits Other Than Pensions | Registered investment companies | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Registered investment companies | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Interest-bearing cash |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 56 | 51 |
Postretirement Benefits Other Than Pensions | Interest-bearing cash | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Interest-bearing cash | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 56 | 51 |
Postretirement Benefits Other Than Pensions | Interest-bearing cash | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Other investments |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 59 | 59 |
Postretirement Benefits Other Than Pensions | Other investments | Level 1 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Other investments | Level 2 |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 59 | 59 |
Postretirement Benefits Other Than Pensions | Other investments | NAV |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | 0 | 0 |
Postretirement Benefits Other Than Pensions | Collateralized mortgage obligations and other asset backed securities |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Receivables and payables, net | $ 150 | $ 150 |
Postretirement Benefits Other Than Pensions | Private equity and venture capital funds including branded consumer products, clean and information technology and healthcare |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 63.00% | 54.00% |
Postretirement Benefits Other Than Pensions | Asset backed securities including distressed mortgages |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 31.00% | 35.00% |
Postretirement Benefits Other Than Pensions | Broad range of financial assets in all global markets |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 6.00% | 11.00% |
Postretirement Benefits Other Than Pensions | Municipal securities |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Fair value of plan assets | $ 53 | $ 44 |
Postretirement Benefits Other Than Pensions | Money Market Fund |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 75.00% | 61.00% |
Postretirement Benefits Other Than Pensions | Defined Benefit Plan, Equity Securities, Small Cap |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Actual plan asset allocations, percentage | 25.00% | 39.00% |
SCE | Postretirement Benefits Other Than Pensions |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Net plan assets available for benefits | $ 2,187 | $ 2,772 | $ 2,717

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