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Resolution Of Remaining Chapter 11 Disputed Claims (Changes In The Remaining Net Disputed Claims Liability) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Resolution Of Remaining Chapter Eleven Disputed Claims [Line Items]    
Interest payable on disputed claims   $ 710pcg_AccruedInterestPayableAttributedToFercOrderedRate
Pacific Gas And Electric Company [Member]    
Resolution Of Remaining Chapter Eleven Disputed Claims [Line Items]    
Remaining disputed claims 434pcg_BankruptcyRemainingDisputedClaims
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryOfCommonParentMember		 154pcg_BankruptcyRemainingDisputedClaims
/ dei_LegalEntityAxis
= us-gaap_SubsidiaryOfCommonParentMember
CAISO And PX [Member]    
Resolution Of Remaining Chapter Eleven Disputed Claims [Line Items]    
Carrying amounts due from CAISO and PX as of the balance sheet date for disputed claims related to the Chapter 11 Filing 291pcg_OtherReceivablesDisputedClaims
/ us-gaap_MajorCustomersAxis
= pcg_CaisoAndPxMember		 291pcg_OtherReceivablesDisputedClaims
/ us-gaap_MajorCustomersAxis
= pcg_CaisoAndPxMember
Settlement Refund $ 312pcg_SettlementRefund
/ us-gaap_MajorCustomersAxis
= pcg_CaisoAndPxMember