SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - WILDFIRE FUND BALANCE SHEET LOCATION (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Loss Contingencies [Line Items]
Noncurrent portion of the Wildfire Fund asset	$ 246	$ 262
SDG&E
Loss Contingencies [Line Items]
Current portion of Wildfire fund	14	14
Noncurrent portion of the Wildfire Fund asset	246	262
Current Wildfire Fund obligation	13	13
Noncurrent Wildfire Fund obligation	$ 20	$ 31