Compensation and Benefit Plans (Expected Future Benefit Payments) (Details) $ in Millions	Dec. 31, 2017 USD ($)
Pension Plans
Years ended December 31,
2018	$ 338
2019	343
2020	327
2021	324
2022	309
2023 – 2027	1,453
Postretirement Benefits Other Than Pensions
Years ended December 31,
2018	93
2019	96
2020	100
2021	103
2022	107
2023 – 2027	582
SCE \| Pension Plans
Years ended December 31,
2018	304
2019	303
2020	293
2021	287
2022	281
2023 – 2027	1,299
SCE \| Postretirement Benefits Other Than Pensions
Years ended December 31,
2018	93
2019	96
2020	100
2021	103
2022	106
2023 – 2027	$ 580

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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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