OTHER CONTINGENCIES AND COMMITMENTS (Schedule Environmental Remediation Liability Composed) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Disclosure Commitments And Contingencies Environmental Remediation Liability Composed [Abstract]
Topock natural gas compressor station	$ 282	$ 284
Hinkley natural gas compressor station	106	110
Former manufactured gas plant sites owned by the Utility or third parties	837	750
Utility-owned generation facilities (other than fossil fuel-fired), other facilities, and third-party disposal sites	117	112
Fossil fuel-fired generation facilities and sites	25	26
Total environmental remediation liability	$ 1,367	$ 1,282