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SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - INVENTORIES (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Inventory [Line Items] |  |
Natural gas | $ 174 | $ 106
LNG | 9 | 62
Materials and supplies | 299 | 235
Total | 482 | 403
SDG&E |  |
Inventory [Line Items] |  |
Natural gas | 1 | 1
LNG | 0 | 0
Materials and supplies | 152 | 133
Total | 153 | 134
SoCalGas |  |
Inventory [Line Items] |  |
Natural gas | 155 | 74
LNG | 0 | 0
Materials and supplies | 122 | 85
Total | $ 277 | $ 159

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