BANKRUPTCY FILING (Chapter 11 Claims Process) (Details) notice in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) notice
Debt Instrument [Line Items]
Proofs of claims | notice		100
Claims expected to be received	$ 145
Disputed claims and customer refunds	0	$ 242
Current regulatory liabilities expected to be refunded	422
Pacific Gas & Electric Co (Utility)
Debt Instrument [Line Items]
Disputed claims and customer refunds	0	242
Payments for reorganization items	53	400
PG&E Corporation
Debt Instrument [Line Items]
Payments for reorganization items	$ 31	$ 102
Subrogation Wildfire Trust and Fire Victim Trust
Debt Instrument [Line Items]
Proofs of claims | notice		80