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SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - INVENTORIES (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Inventory [Line Items] |  |
Natural gas | $ 163 | $ 174
LNG | 27 | 9
Materials and supplies | 369 | 299
Total | 559 | 482
SDG&E |  |
Inventory [Line Items] |  |
Natural gas | 1 | 1
LNG | 0 | 0
Materials and supplies | 201 | 152
Total | 202 | 153
SoCalGas |  |
Inventory [Line Items] |  |
Natural gas | 148 | 155
LNG | 0 | 0
Materials and supplies | 139 | 122
Total | $ 287 | $ 277

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