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Compensation and Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2022
Pension Plans |
Pension and Other Postretirement Benefits |
Expense Components for Plans | ​
​ | ​ | ​ | ​ | ​ | ​
​ | Three months ended
​ | March 31,
(in millions) | 2022 |  | 2021
Edison International: | ​ | ​ | ​ | ​ | ​
Service cost | $ | 30 | ​ | $ | 34
Non-service cost (benefit) |  |  | ​ |  |
Interest cost |  | 27 | ​ |  | 26
Expected return on plan assets |  | (57) | ​ |  | (56)
Amortization of net loss1 |  | 1 | ​ |  | 3
Regulatory adjustment |  | 2 | ​ |  | 4
Total non-service benefit2 | $ | (27) | ​ | $ | (23)
Total expense recognized | $ | 3 | ​ | $ | 11
SCE: | ​ | ​ | ​ | ​ | ​
Service cost | $ | 29 | ​ | $ | 33
Non-service cost (benefit) |  | ​ | ​ |  | ​
Interest cost |  | 25 | ​ |  | 24
Expected return on plan assets |  | (54) | ​ |  | (53)
Amortization of net loss1 |  | 1 | ​ |  | 2
Regulatory adjustment |  | 2 | ​ |  | 4
Total non-service benefit2 | $ | (26) | ​ | $ | (23)
Total expense recognized | $ | 3 | ​ | $ | 10
1 | Includes the amount of net loss reclassified from other comprehensive loss. The amount reclassified for Edison International and SCE was $2 million and $1 million respectively, for the three months ended March 31, 2022. The amount reclassified for Edison International and SCE was $3 million and $2 million, respectively, for the three months ended March 31, 2021.
2 | Included in "Other income" on Edison International's and SCE's consolidated statement of income
Postretirement Benefits Other Than Pensions |
Pension and Other Postretirement Benefits |
Expense Components for Plans |
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended
​ | ​ | March 31,
(in millions) |  | 2022 |  | 2021
Service cost | ​ | $ | 8 | ​ | $ | 10
Non-service cost (benefit) | ​ |  |  | ​ |  |
Interest cost | ​ |  | 14 | ​ |  | 14
Expected return on plan assets | ​ |  | (24) | ​ |  | (27)
Amortization of net gain | ​ |  | (12) | ​ |  | (8)
Regulatory adjustment | ​ |  | 14 | ​ |  | 11
Total non-service benefit1 | ​ | $ | (8) | ​ | $ | (10)
Total expense | ​ | $ | — | ​ | $ | —
1 | Included in "Other income" on Edison International's and SCE's consolidated statement 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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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