OTHER CONTINGENCIES AND COMMITMENTS (Schedule Environmental Remediation Liability Composed) (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Disclosure Commitments And Contingencies Environmental Remediation Liability Composed [Abstract]
Topock natural gas compressor station	$ 293	$ 276
Hinkley natural gas compressor station	105	104
Former manufactured gas plant sites owned by the Utility or third parties	800	809
Utility-owned generation facilities (other than fossil fuel-fired), other facilities, and third-party disposal sites	79	107
Fossil fuel-fired generation facilities and sites	18	19
Total environmental remediation liability	$ 1,295	$ 1,315