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Leases (Summary of Other Information) (Details) - Southern California Edison $ in Millions | 3 Months Ended
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Mar. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities: |
Other operating leases | $ 9
Weighted average remaining lease term (in years) | 12 years 1 month 21 days
Weighted average discount rate | 8.70%
PPA Operating Leases |
Cash paid for amounts included in the measurement of lease liabilities: |
Operating cash flows from operating leases | $ 30
Weighted average remaining lease term (in years) | 12 years 10 months 6 days
Weighted average discount rate | 4.24%
Other Operating Leases |
Cash paid for amounts included in the measurement of lease liabilities: |
Operating cash flows from operating leases | $ 11
Weighted average remaining lease term (in years) | 12 years 6 months 15 days
Weighted average discount rate | 3.85%

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