Label	Element	Value
Retained Earnings [Member] | Pacific Gas & Electric Co [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	$ 781,000,000
Dividends, Preferred Stock, Less Dividends in Arrears	pcg_DividendsPreferredStockLessDividendsInArrears	3,000,000
Dividends, Common Stock	us-gaap_DividendsCommonStock	450,000,000
Parent [Member] | Pacific Gas & Electric Co [Member]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	us-gaap_ProfitLoss	781,000,000
Dividends, Preferred Stock, Less Dividends in Arrears	pcg_DividendsPreferredStockLessDividendsInArrears	3,000,000
Adjustments To Additional Paid In Capital, Contribution From Parent	pcg_AdjustmentsToAdditionalPaidInCapitalContributionFromParent	440,000,000
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	(1,000,000)
Dividends, Common Stock	us-gaap_DividendsCommonStock	450,000,000
Additional Paid-in Capital [Member] | Pacific Gas & Electric Co [Member]
Adjustments To Additional Paid In Capital, Contribution From Parent	pcg_AdjustmentsToAdditionalPaidInCapitalContributionFromParent	440,000,000
AOCI Attributable to Parent [Member] | Pacific Gas & Electric Co [Member]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	$ (1,000,000)