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Leases (Tables) | 12 Months Ended
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Dec. 31, 2020
Leases [Abstract] |
Summary of Finance Lease Payments | The following table summarizes SCE's lease payments for operating and finance leases as of December 31, 2020:
(in millions) | PPA Operating Leases 1 |  | Other Operating Leases 2 |  | PPA Finance Leases 1
2021 | $ | 204 |  |  | $ | 39 |  |  | $ | 1 |
2022 | 208 |  |  | 32 |  |  | 1 |
2023 | 159 |  |  | 26 |  |  | 1 |
2024 | 47 |  |  | 21 |  |  | — |
2025 | 47 |  |  | 18 |  |  | — |
Thereafter | 443 |  |  | 104 |  |  | 5 |
Total lease payments | 1,108 |  |  | 240 |  |  | 8 |
Amount representing interest 3 | 203 |  |  | 60 |  |  | 4 |
Lease liabilities | $ | 905 |  |  | $ | 180 |  |  | $ | 4 |
1 Excludes expected purchases from most renewable energy contracts, which do not meet the definition of a lease payment since renewable power generation is contingent on external factors. 2 Excludes escalation clauses based on consumer price or other indices and residual value guarantees that are not considered probable at the commencement date of the lease. 3 Lease payments are discounted to their present value using SCE's incremental borrowing rates.
Summary of Operating Lease Payments | The following table summarizes SCE's lease payments for operating and finance leases as of December 31, 2020:
(in millions) | PPA Operating Leases 1 |  | Other Operating Leases 2 |  | PPA Finance Leases 1
2021 | $ | 204 |  |  | $ | 39 |  |  | $ | 1 |
2022 | 208 |  |  | 32 |  |  | 1 |
2023 | 159 |  |  | 26 |  |  | 1 |
2024 | 47 |  |  | 21 |  |  | — |
2025 | 47 |  |  | 18 |  |  | — |
Thereafter | 443 |  |  | 104 |  |  | 5 |
Total lease payments | 1,108 |  |  | 240 |  |  | 8 |
Amount representing interest 3 | 203 |  |  | 60 |  |  | 4 |
Lease liabilities | $ | 905 |  |  | $ | 180 |  |  | $ | 4 |
1 Excludes expected purchases from most renewable energy contracts, which do not meet the definition of a lease payment since renewable power generation is contingent on external factors. 2 Excludes escalation clauses based on consumer price or other indices and residual value guarantees that are not considered probable at the commencement date of the lease. 3 Lease payments are discounted to their present value using SCE's incremental borrowing rates.
Supplemental Balance Sheet Information | Supplemental balance sheet information related to SCE's leases was as follows:
(in millions) | December 31, 2020 |  | December 31, 2019
Operating leases: |  |  |
Operating lease ROU assets 1 | $ | 1,085 |  |  | $ | 689 |
Current portion of operating lease liabilities | 214 |  |  | 79 |
Operating lease liabilities | 871 |  |  | 610 |
Total operating lease liabilities 1 | $ | 1,085 |  |  | $ | 689 |
Finance leases included in: |  |  |
Utility property, plant and equipment, gross | $ | 4 |  |  | $ | 14 |
Accumulated depreciation | — |  |  | (5) |
Utility property, plant and equipment, net | 4 |  |  | 9 |
Other current liabilities | — |  |  | 1 |
Other long-term liabilities | 4 |  |  | 8 |
Total finance lease liabilities | $ | 4 |  |  | $ | 9 |
1During the year ended 2020, a PPA operating lease commenced and one PPA was amended resulting in a total of $463 million additions in ROU assets and lease liabilities.
Summary of Lease Expense Components | The following table summarizes the components of SCE's lease expense:
(in millions) | Year ended December 31, 2020 |  | Year ended December 31, 2019
PPA leases: |  |  |
Operating lease cost | $ | 111 |  |  | $ | 118 |
Finance lease cost | 1 |  |  | 1 |
Variable lease cost 1 | 1,917 |  |  | 2,087 |
Total PPA lease cost | 2,029 |  |  | 2,206 |
Other operating leases cost | 47 |  |  | 46 |
Total lease cost | $ | 2,076 |  |  | $ | 2,252 |
1 Includes lease costs from renewable energy contracts where payments are based on contingent external factors such as wind, hydro and solar power generation. Other information related to leases was as follows:
(in millions, except lease term and discount rate) | Year ended December 31, 2020 |  | Year ended December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |  |
Operating cash flows from operating leases |  |  |
PPA leases | $ | 111 |  |  | $ | 118 |
Other leases | 44 |  |  | 44 |
Financing cash flows from PPA finance leases | 1 |  |  | 1 |
ROU assets obtained in exchange for lease obligations: |  |  |
PPA operating leases | $ | 463 |  |  | — |
Other operating leases | 58 |  |  | 34 |
Weighted average remaining lease term (in years): |  |  |
Operating leases |  |  |
PPA leases | 9.75 |  | 16.05
Other leases | 12.13 |  | 12.73
PPA Finance leases | 16.67 |  | 11.51
Weighted average discount rate: |  |  |
Operating leases |  |  |
PPA leases | 3.12 | % |  | 4.46 | %
Other leases | 3.63 | % |  | 3.88 | %
PPA Finance leases | 11.29 | % |  | 8.76 | %
Schedule of Undiscounted Cash Flow Expected from Lease Payments | At December 31, 2020, the undiscounted cash flow expected to be received from lease payments for the remaining years is as follows:
(in millions) |
2021 | $ | 11 |
2022 | 10 |
2023 | 8 |
2024 | 7 |
2025 | 6 |
Thereafter | 128 |
Total | $ | 170 |

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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980 + Details
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- Definition Tabular disclosure of maturity of undiscounted cash flows to be received by lessor on annual basis for operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121576215&loc=SL77919396-209981 + Details
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