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GENERAL INFORMATION AND OTHER FINANCIAL DATA - INVENTORIES (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Inventory [Line Items]    
Natural gas $ 147 $ 174
LNG 8 9
Materials and supplies 312 299
Total 467 482 [1]
SDG&E    
Inventory [Line Items]    
Natural gas 1 1
LNG 0 0
Materials and supplies 158 152
Total 159 153 [1]
SoCalGas    
Inventory [Line Items]    
Natural gas 132 155
LNG 0 0
Materials and supplies 128 122
Total $ 260 $ 277 [1]
[1] Derived from audited financial statements.