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COMMITMENTS AND CONTINGENCIES - LEASES CASH FLOW INFORMATION (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Lessee, Lease, Description [Line Items] |  |  |
Cash paid for operating leases | $ 85 | $ 88 | $ 78
Cash paid for finance leases | 167 | 169 | 171
Cash paid for finance leases | 60 | 48 | 39
Increase in operating lease obligations for ROU assets | 143 | 142 | 116
Increase in finance lease obligations for investment in PP&E | 57 | 57 | 43
SDG&E |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Cash paid for operating leases | 46 | 45 | 32
Cash paid for finance leases | 162 | 166 | 169
Cash paid for finance leases | 40 | 33 | 27
Increase in operating lease obligations for ROU assets | 134 | 134 | 112
Increase in finance lease obligations for investment in PP&E | 17 | 16 | 24
SoCalGas |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Cash paid for operating leases | 13 | 18 | 20
Cash paid for finance leases | 5 | 2 | 2
Cash paid for finance leases | 20 | 15 | 12
Increase in operating lease obligations for ROU assets | 0 | 1 | 1
Increase in finance lease obligations for investment in PP&E | $ 40 | $ 41 | $ 19

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