Debt [Line Items]

No definition available.

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Namespace Prefix:	pcg_
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Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of borrowings classified as other, maturing within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a)(7))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_OtherShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16(a))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LongtermDebtTypeAxis=pcg_SeniorNotesTwoPointFourZeroPercentDueTwoThousandNineteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	dei_LegalEntityAxis=pcg_PacificGasElectricCoMember
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Period Type:

- Details

Name:	us-gaap_RegulatoryAssetAxis=pcg_PollutionControlBondsSeriesNineteenNinetySixCEFAndNineteenNinetySevenBMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=pcg_SeniorNotesEightPointTwoFivePercentDueTwoThousandEighteenMember
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- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=pcg_FloatingRateUnsecuredTermLoanDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_UnsecuredDebtMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pcg_FloatingRateUnsecuredTermLoanDue2019Member
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DEBT (Narrative) (Details) - USD ($)	Apr. 30, 2018	Mar. 31, 2018	Feb. 28, 2018	Feb. 18, 2018	Jan. 31, 2018	Feb. 28, 2017
Senior Notes Two Point Four Zero Percent Due 2019
Debt [Line Items]
Senior notes		$ 350,000,000
Debt instrument, interest rate		2.40%
Pacific Gas & Electric Co
Debt [Line Items]
Floating rate unsecured term loan, matured 2018						$ 250,000,000
Pacific Gas & Electric Co \| Pollution Control Bonds Series 1996 C, E, F, And 1997 B
Debt [Line Items]
Debt instrument, face amount		$ 614,000,000
Pacific Gas & Electric Co \| Pollution Control Bonds Series 1996 C, E, F, And 1997 B \| Minimum
Debt [Line Items]
Debt instrument, interest rate		1.52%
Pacific Gas & Electric Co \| Pollution Control Bonds Series 1996 C, E, F, And 1997 B \| Maximum
Debt [Line Items]
Debt instrument, interest rate		1.65%
Pacific Gas & Electric Co \| Pollution Control Bonds Series 2009 A-B
Debt [Line Items]
Debt instrument, face amount		$ 149,000,000
Pacific Gas & Electric Co \| Pollution Control Bonds Series 2009 A-B \| Maximum
Debt [Line Items]
Debt instrument, interest rate		1.60%
Pacific Gas & Electric Co \| Senior Notes Eight Point Two Five Percent Due 2018
Debt [Line Items]
Senior notes				$ 400,000,000	$ 400,000,000
Debt instrument, interest rate					8.25%
Subsequent Event \| Floating Rate Unsecured Term Loan, Due 2020 \| Unsecured Debt
Debt [Line Items]
Debt instrument, face amount	$ 350,000,000
Unsecured Debt \| Pacific Gas & Electric Co \| Floating Rate Unsecured Term Loan, Due 2019
Debt [Line Items]
Debt instrument, face amount			$ 250,000,000