SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - (Wildfire Fund) (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jul. 12, 2019
Public Utility, Property, Plant and Equipment [Line Items]
Litigation liability, current	$ 193
Wildfire Fund asset	297	$ 301
Litigation contribution, net	3,700
Amortization and accretion	352	383	$ 567
Utility
Public Utility, Property, Plant and Equipment [Line Items]
Wildfire Fund asset	297	301
Amortization and accretion	352	$ 383	$ 567
Other Current Liabilities
Public Utility, Property, Plant and Equipment [Line Items]
Wildfire fund, noncurrent	$ 377
Wildfire Fund Asset
Public Utility, Property, Plant and Equipment [Line Items]
Finite-lived intangible asset, useful life		20 years		15 years