SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - INVENTORIES (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Inventory [Line Items]
Natural gas	$ 158	$ 163
LNG	0	27
Materials and supplies	403	369
Total	561	559
Disposal Group Held-for-sale \| SI Partners
Inventory [Line Items]
Inventories classified as assets held for sale	109
Disposal Group Held-for-sale \| SI Partners \| Natural Gas
Inventory [Line Items]
Inventories classified as assets held for sale	12
Disposal Group Held-for-sale \| SI Partners \| Natural Gas Liquids (NGL)
Inventory [Line Items]
Inventories classified as assets held for sale	12
Disposal Group Held-for-sale \| SI Partners \| Supplies
Inventory [Line Items]
Inventories classified as assets held for sale	85
SDG&E
Inventory [Line Items]
Natural gas	2	1
LNG	0	0
Materials and supplies	265	201
Total	267	202
SoCalGas
Inventory [Line Items]
Natural gas	156	148
LNG	0	0
Materials and supplies	138	139
Total	$ 294	$ 287

Energy related inventory, Liquefied Natural Gas.

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- Definition

Energy related inventory, materials and supplies.

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Amount classified as inventory attributable to disposal group, expected to be disposed of within one year or the normal operating cycle, if longer.

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Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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