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OTHER CONTINGENCIES AND COMMITMENTS (Other Matters) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Accrued legal liabilities	$ 87	$ 77

X

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to claims and litigation, regulatory proceedings, penalties and other legal matters.

+ References

No definition available.

+ Details

Name:	pcg_AccruedLegalLiabilities
Namespace Prefix:	pcg_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration