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OTHER CONTINGENCIES AND COMMITMENTS (Tax Matters) (Details) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract] |
Deductibility in question, repair costs for gas transmission and distribution lines | $ 850
Deductibility in question, customer bill credits | $ 400

X
- Definition Customer Bill Credits, Amount of Deduction in Question + References No definition available. + Details
Name: | pcg_CustomerBillCreditsAmountOfDeductionInQuestion
Namespace Prefix: | pcg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Repair Costs, Gas Transmission and Distribution Lines, Amount of Deduction in Question + References No definition available. + Details
Name: | pcg_RepairCostsGasTransmissionAndDistributionLinesAmountOfDeductionInQuestion
Namespace Prefix: | pcg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration