BANKRUPTCY FILING (Schedule of Debtor Reorganization Items) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reorganizations [Line Items]
Debtor-in-possession financing costs	$ 6	$ 114
Legal and other	1,969	292
Interest income	(16)	(60)
Total reorganization items, net	1,959	346	$ 0
Equity backstop premium expense and bridge loan facility fees
Reorganizations [Line Items]
Legal and other	1,500
PG&E Corporation
Reorganizations [Line Items]
Debtor-in-possession financing costs	0	17
Legal and other	1,651	19
Interest income	(2)	(10)
Total reorganization items, net	1,649	26	0
Pacific Gas & Electric Co (Utility)
Reorganizations [Line Items]
Debtor-in-possession financing costs	6	97
Legal and other	318	273
Interest income	(14)	(50)
Total reorganization items, net	$ 310	$ 320	$ 0

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-Publisher FASB
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