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BANKRUPTCY FILING (Schedule of Debtor Reorganization Items) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reorganizations [Line Items]
Debtor-in-possession financing costs	$ 0	$ 6	$ 114
Legal and other	20	1,969	292
Interest and other	(9)	(16)	(60)
Total reorganization items, net	11	1,959	346
Equity backstop premium expense and bridge loan facility fees
Reorganizations [Line Items]
Legal and other		1,500
PG&E Corporation
Reorganizations [Line Items]
Payments for reorganization items	31	102
Debtor-in-possession financing costs	0	0	17
Legal and other	(1)	1,651	19
Interest and other	0	(2)	(10)
Total reorganization items, net	(1)	1,649	26
Pacific Gas & Electric Co (Utility)
Reorganizations [Line Items]
Payments for reorganization items	53	400
Debtor-in-possession financing costs	0	6	97
Legal and other	21	318	273
Interest and other	(9)	(14)	(50)
Total reorganization items, net	$ 12	$ 310	$ 320

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