XML 28 R33.htm IDEA: XBRL DOCUMENT v2.4.1.9
Debt (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Pollution Control Bonds Series 1996 C, E, F, And 1997 B [Member]  
Debt [Line Items]  
Debt instrument, face amount 614us-gaap_DebtInstrumentFaceAmount
/ us-gaap_RegulatoryAssetAxis
= pcg_PollutionControlBondsSeriesNineteenNinetySixCEFAndNineteenNinetySevenBMember
Pollution Control Bonds Series 2009 A-D [Member]  
Debt [Line Items]  
Debt instrument, face amount 309us-gaap_DebtInstrumentFaceAmount
/ us-gaap_RegulatoryAssetAxis
= pcg_PollutionControlBondsSeriesTwoThousandAndNineToDMember
Minimum [Member] | Pollution Control Bonds Series 1996 C, E, F, And 1997 B [Member]  
Debt [Line Items]  
Debt instrument, interest rate 0.01%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_RegulatoryAssetAxis
= pcg_PollutionControlBondsSeriesNineteenNinetySixCEFAndNineteenNinetySevenBMember
Minimum [Member] | Pollution Control Bonds Series 2009 A-D [Member]  
Debt [Line Items]  
Debt instrument, interest rate 0.01%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_RegulatoryAssetAxis
= pcg_PollutionControlBondsSeriesTwoThousandAndNineToDMember
Maximum [Member] | Pollution Control Bonds Series 1996 C, E, F, And 1997 B [Member]  
Debt [Line Items]  
Debt instrument, interest rate 0.02%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_RegulatoryAssetAxis
= pcg_PollutionControlBondsSeriesNineteenNinetySixCEFAndNineteenNinetySevenBMember
Maximum [Member] | Pollution Control Bonds Series 2009 A-D [Member]  
Debt [Line Items]  
Debt instrument, interest rate 0.03%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_RegulatoryAssetAxis
= pcg_PollutionControlBondsSeriesTwoThousandAndNineToDMember
PG&E Corporation [Member]  
Debt [Line Items]  
Line of Credit termination date Apr. 01, 2019