Debt Instrument, Quarterly Reduction Amount

No definition available.

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

- Definition

Debt [Line Items]

+ References

No definition available.

+ Details

Name:	pcg_DebtLineItems
Namespace Prefix:	pcg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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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://fasb.org/us-gaap/role/ref/legacyRef
-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=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585

+ Details

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

- Details

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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=pcg_A364DayTermLoanFacilityMember
Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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DEBT (Narrative) (Details) - USD ($)			1 Months Ended
DEBT (Narrative) (Details) - USD ($)	Feb. 01, 2021	Jan. 31, 2021	Mar. 31, 2021	Jun. 23, 2020
First Mortgage Bonds, Exchange Stated Maturity 2023 \| Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Debt instrument, face amount			$ 1,500,000,000
Stated interest rate			1.367%
First Mortgage Bonds, Exchange Stated Maturity 2031 \| Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Debt instrument, face amount			$ 450,000,000
Stated interest rate			3.25%
First Mortgage Bonds, Exchange Stated Maturity 2041 \| Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Debt instrument, face amount			$ 450,000,000
Stated interest rate			4.20%
364-Day Term Loan Facility \| Pacific Gas & Electric Co (Utility)
Debt [Line Items]
Repayments of debt			$ 1,500,000,000
Debt instrument, term (in days)			364 days
Term Loan \| PG&E Corporation
Debt [Line Items]
Debt instrument, face amount				$ 2,750,000,000
Debt instrument, quarterly reduction amount			$ 6,875,000
Debt instrument, basis spread on variable rate	3.00%	4.50%
Term Loan \| PG&E Corporation \| London Interbank Offered Rate (LIBOR)
Debt [Line Items]
Debt instrument, basis spread on variable rate	0.50%	1.00%