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Compensation and Benefit Plans (Tables) | 9 Months Ended
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Sep. 30, 2018
Pension Plans |
Defined Benefit Plan Disclosure [Line Items] |
Expense Components for Plans | Net periodic pension expense components for continuing operations are:
| Three months ended September 30, |  | Nine months ended September 30,
(in millions) | 2018 |  | 2017 3 |  | 2018 |  | 2017 3
Edison International: |  |  |  |  |  |  |
Service cost | $ | 32 |  |  | $ | 36 |  |  | $ | 96 |  |  | $ | 108 |
Non-service cost |  |  |  |  |  |  |
Interest cost | 35 |  |  | 41 |  |  | 105 |  |  | 123 |
Expected return on plan assets | (56 | ) |  | (53 | ) |  | (169 | ) |  | (159 | )
Settlement costs 1 | — |  |  | — |  |  | — |  |  | 8 |
Amortization of prior service cost | 1 |  |  | — |  |  | 2 |  |  | 2 |
Amortization of net loss 2 | 2 |  |  | 4 |  |  | 6 |  |  | 14 |
Regulatory adjustment (deferred) | 2 |  |  | (3 | ) |  | 7 |  |  | (9 | )
Total non-service benefit | (16 | ) |  | (11 | ) |  | (49 | ) |  | (21 | )
Total expense recognized | $ | 16 |  |  | $ | 25 |  |  | $ | 47 |  |  | $ | 87 |
SCE: |  |  |  |  |  |  |
Service cost | $ | 31 |  |  | $ | 35 |  |  | $ | 93 |  |  | $ | 105 |
Non-service cost |  |  |  |  |  |  |
Interest cost | 32 |  |  | 37 |  |  | 96 |  |  | 111 |
Expected return on plan assets | (52 | ) |  | (50 | ) |  | (159 | ) |  | (150 | )
Amortization of prior service cost | 1 |  |  | — |  |  | 2 |  |  | 2 |
Amortization of net loss 2 | 1 |  |  | 4 |  |  | 4 |  |  | 12 |
Regulatory adjustment (deferred) | 2 |  |  | (3 | ) |  | 7 |  |  | (9 | )
Total non-service benefit | (16 | ) |  | (12 | ) |  | (50 | ) |  | (34 | )
Total expense recognized | $ | 15 |  |  | $ | 23 |  |  | $ | 43 |  |  | $ | 71 |
1 | Under GAAP, a settlement is recorded when lump-sum payments exceed estimated annual service and interest costs. Lump-sum payments made in April 2017 to Edison International executives retiring in 2016 from the Executive Retirement Plan exceeded the estimated service and interest costs, resulting in a partial settlement of that plan. A settlement loss of approximately $8 million ($5 million after-tax) was recorded at Edison International in the second quarter of 2017.
2 | 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 September 30, 2018, and $6 million and $4 million, respectively, for the nine months ended September 30, 2018. The amount reclassified for Edison International and SCE was $3 million and $1 million, respectively, for the three months ended September 30, 2017, and $8 million and $4 million, respectively, for the nine months ended September 30, 2017.
3 | During the first quarter of 2018, Edison International and SCE adopted an accounting standard retrospectively related to the presentation of the components of net periodic benefit costs for the defined benefit pension and other postretirement plans. Prior years' consolidated income statements have been updated to reflect the retrospective application of this accounting standard. Service and non-service costs are included in "Operation and maintenance" and "Other income and expenses," respectively, on the consolidated income statement. See Note 1 for further information.
PBOP Plan |
Defined Benefit Plan Disclosure [Line Items] |
Expense Components for Plans | Net periodic PBOP expense components for continuing operations are:
| Three months ended September 30, |  | Nine months ended September 30,
(in millions) | 2018 |  | 2017 1 |  | 2018 |  | 2017 1
Edison International: |  |  |  |  |  |  |
Service cost | $ | 10 |  |  | $ | 9 |  |  | $ | 29 |  |  | $ | 27 |
Non-service cost |  |  |  |  |  |  |
Interest cost | 21 |  |  | 24 |  |  | 63 |  |  | 72 |
Expected return on plan assets | (31 | ) |  | (27 | ) |  | (91 | ) |  | (81 | )
Amortization of prior service cost | — |  |  | — |  |  | (1 | ) |  | (2 | )
Total non-service benefit | (10 | ) |  | (3 | ) |  | (29 | ) |  | (11 | )
Total expense | $ | — |  |  | $ | 6 |  |  | $ | — |  |  | $ | 16 |
SCE: |  |  |  |  |  |  |
Service cost | $ | 10 |  |  | $ | 9 |  |  | $ | 29 |  |  | $ | 27 |
Non-service cost |  |  |  |  |  |  |
Interest cost | 21 |  |  | 24 |  |  | 63 |  |  | 72 |
Expected return on plan assets | (31 | ) |  | (27 | ) |  | (91 | ) |  | (81 | )
Amortization of prior service cost | — |  |  | — |  |  | (1 | ) |  | (2 | )
Total non-service benefit | (10 | ) |  | (3 | ) |  | (29 | ) |  | (11 | )
Total expense | $ | — |  |  | $ | 6 |  |  | $ | — |  |  | $ | 16 |
1 | During the first quarter of 2018, Edison International and SCE adopted an accounting standard retrospectively related to the presentation of the components of net periodic benefit costs for the defined benefit pension and other postretirement plans. Prior years' consolidated income statements have been updated to reflect the retrospective application of this accounting standard. Service and non-service costs are included in "Operation and maintenance" and "Other income and expenses," respectively, on the consolidated income statement. See Note 1 for further information.

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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=108410482&loc=d3e1928-114920 + Details
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