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Leases (Other Information) (Details) - SCE - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities: |  |
PPA finance leases, weighted average remaining lease term (in years) | 15 years 11 months 1 day | 10 years 10 months 24 days
PPA finance leases, weighted average discount rate | 11.29% | 8.83%
PPA Operating Leases |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | $ 199 | $ 74
ROU assets obtained in exchange for lease obligations | $ 610 | $ 463
Weighted average remaining lease term (in years) | 10 years 3 months 3 days | 9 years 9 months 29 days
Weighted average discount rate | 2.82% | 3.08%
Other Operating Leases |  |
Cash paid for amounts included in the measurement of lease liabilities: |  |
Operating cash flows from operating leases | $ 33 | $ 33
ROU assets obtained in exchange for lease obligations | $ 38 | $ 42
Weighted average remaining lease term (in years) | 11 years 8 months 1 day | 12 years 4 months 6 days
Weighted average discount rate | 3.47% | 3.74%

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- Definition Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=121568110&loc=SL77918982-209971 + Details
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