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COMMITMENTS AND CONTINGENCIES - LEASE INCOME STATEMENT INFORMATION (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Lessee, Lease, Description [Line Items] |  |  |
Operating lease costs | $ 99 | $ 83 | $ 89
Amortization of ROU assets | 60 | 48 | 39
Interest on lease liabilities | 182 | 184 | 186
Total finance lease costs | 242 | 232 | 225
Short-term lease costs | 9 | 3 | 7
Variable lease costs | 458 | 411 | 432
Total lease costs | 808 | 729 | 753
Purchased-Power Agreements |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease costs | 21 | 10 | 1
Depreciation and Amortization Expense |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Amortization of ROU assets | 29 | 25 | 22
SDG&E |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease costs | 53 | 45 | 32
Amortization of ROU assets | 40 | 33 | 27
Interest on lease liabilities | 177 | 181 | 184
Total finance lease costs | 217 | 214 | 211
Short-term lease costs | 8 | 2 | 1
Variable lease costs | 447 | 399 | 422
Total lease costs | 725 | 660 | 666
SDG&E | Purchased-Power Agreements |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease costs | 21 | 10 | 1
SDG&E | Depreciation and Amortization Expense |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Amortization of ROU assets | 28 | 24 | 21
SoCalGas |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Operating lease costs | 13 | 18 | 20
Amortization of ROU assets | 20 | 15 | 12
Interest on lease liabilities | 5 | 2 | 2
Total finance lease costs | 25 | 17 | 14
Short-term lease costs | 0 | 0 | 0
Variable lease costs | 10 | 11 | 10
Total lease costs | 48 | 46 | 44
SoCalGas | Depreciation and Amortization Expense |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Amortization of ROU assets | $ 1 | $ 1 | $ 1

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