BANKRUPTCY FILING (Reorganization Items, Net) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pacific Gas & Electric Co
Debt Instrument [Line Items]
Payments (refunds) for reorganization items	$ 93	$ 67	$ 300	$ 145
Probable of recovery			35
PG&E Corporation
Debt Instrument [Line Items]
Payments (refunds) for reorganization items	$ 6	$ (2)	$ 96	$ 13