OTHER CONTINGENCIES AND COMMITMENTS (Schedule Environmental Remediation Liability Composed) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Disclosure Commitments And Contingencies Environmental Remediation Liability Composed [Abstract]
Topock natural gas compressor station	$ 301	$ 299
Hinkley natural gas compressor station	117	123
Former manufactured gas plant sites owned by the Utility or third parties	653	667
Utility-owned generation facilities (other than fossil fuel-fired), other facilities, and third-party disposal sites	114	104
Fossil fuel-fired generation facilities and sites	55	70
Total environmental remediation liability	$ 1,240	$ 1,263