SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - CAPITALIZED FINANCING COSTS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Capitalized Financing Costs Disclosure [Line Items]
Total capitalized financing costs	$ 801	$ 629	$ 448
SDG&E
Capitalized Financing Costs Disclosure [Line Items]
Total capitalized financing costs	108	100	116
SoCalGas
Capitalized Financing Costs Disclosure [Line Items]
Total capitalized financing costs	$ 98	$ 101	$ 77