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Compensation and Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2025
Pension Plan |
Pension and Other Postretirement Benefits |
Summary of expense components for plans | Pension Plans Net periodic pension expense components are:
| Three months ended March 31, |  |
(in millions) | 2025 |  | 2024 |  |  |  |
Edison International: |  |  |  |  |  |  |
Service cost | $ | 23 |  |  | $ | 24 |  |  |  |  |
Non-service cost (benefit) |  |  |  |  |  |  |
Interest cost | 48 |  |  | 44 |  |  |  |  |
Expected return on plan assets | (58) |  |  | (59) |  |  |  |  |
Amortization of net loss 1 | — |  |  | 1 |  |  |  |  |
Regulatory adjustment | (7) |  |  | (5) |  |  |  |  |
Total non-service benefit 2 | $ | (17) |  |  | $ | (19) |  |  |  |  |
Total expense | $ | 6 |  |  | $ | 5 |  |  |  |  |
SCE: |  |  |  |  |  |  |
Service cost | $ | 23 |  |  | $ | 24 |  |  |  |  |
Non-service cost (benefit) |  |  |  |  |  |  |
Interest cost | 44 |  |  | 40 |  |  |  |  |
Expected return on plan assets | (55) |  |  | (55) |  |  |  |  |
Amortization of net loss 1 | — |  |  | 1 |  |  |  |  |
Regulatory adjustment | (7) |  |  | (5) |  |  |  |  |
Total non-service benefit 2 | $ | (18) |  |  | $ | (19) |  |  |  |  |
Total expense | $ | 5 |  |  | $ | 5 |  |  |  |  |
1 Represents the amount of net loss reclassified from other comprehensive loss. 2 Included in "Other Income, net" on Edison International's and SCE's condensed consolidated statements of income.
Postretirement Benefits Other Than Pensions |
Pension and Other Postretirement Benefits |
Summary of expense components for plans | Postretirement Benefits Other Than Pensions ("PBOP") Net periodic PBOP expense components for Edison International and SCE are:
| Three months ended March 31, |  |
(in millions) | 2025 |  | 2024 |  |  |  |
Service cost | $ | 3 |  |  | $ | 3 |  |  |  |  |
Non-service cost (benefit) |  |  |  |  |  |  |
Interest cost | 10 |  |  | 9 |  |  |  |  |
Expected return on plan assets | (27) |  |  | (28) |  |  |  |  |
Amortization of net gain | (20) |  |  | (24) |  |  |  |  |
Regulatory adjustment | 34 |  |  | 40 |  |  |  |  |
Total non-service benefit 1 | $ | (3) |  |  | $ | (3) |  |  |  |  |
Total expense | $ | — |  |  | $ | — |  |  |  |  |
1 Included in "Other income, net" on Edison International's and SCE's condensed consolidated statements of income.

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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