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Leases (Summary of Other Information) (Details) - SCE $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities: |
Financing cash flows from PPA finance leases | $ 1
Other operating leases | $ 34
PPA finance leases, weighted average remaining lease term (in years) | 11 years 6 months 3 days
PPA finance leases, weighted average discount rate | 8.76%
PPA Operating Leases |
Cash paid for amounts included in the measurement of lease liabilities: |
Operating cash flows from operating leases | $ 118
Weighted average remaining lease term (in years) | 16 years 18 days
Weighted average discount rate | 4.46%
Other Operating Leases |
Cash paid for amounts included in the measurement of lease liabilities: |
Operating cash flows from operating leases | $ 44
Weighted average remaining lease term (in years) | 12 years 8 months 23 days
Weighted average discount rate | 3.88%

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