BANKRUPTCY FILING (Reorganization Items, Net) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Pacific Gas & Electric Co (Utility)
Debt Instrument [Line Items]
Payments (refunds) for reorganization items	$ 24	$ 90	$ 41	$ 207
PG&E Corporation
Debt Instrument [Line Items]
Payments (refunds) for reorganization items	$ 2	$ 33	$ 31	$ 90

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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