Other Noncurrent Assets Regulated Entity, Other Assets, Noncurrent [Abstract] Cost recovery, increase to revenue requirement Loss Contingency, Cost Recovery, Increase To Revenue Requirement Loss Contingency, Cost Recovery, Increase To Revenue Requirement Nuclear decommissioning trusts Decommissioning Fund Investments Payments Loss Contingency Accrual, Payments Supplemental disclosures of cash flow information Supplemental Cash Flow Information [Abstract] Customer [Domain] Customer [Domain] Consolidated Entities [Axis] Consolidated Entities [Axis] Number of misdemeanors related to failure to maintain firebreak (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Failure To Maintain Clearance Loss Contingency, Number Of Misdemeanors Related To Failure To Maintain Clearance Number of fuses (fuse) Loss Contingency, Number of Fuses Loss Contingency, Number of Fuses Recovery Bonds Recovery Bonds [Member] Recovery Bonds Disallowed capital expenditures Capital Expenditures, Disallowed Capital Expenditures, Disallowed Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Price risk management instruments, liabilities Derivative Liability National Park National Park [Member] National Park Effect of regulatory treatment of fixed asset differences Effective Income Tax Reconciliation, Regulatory Treatment Of Fixed Asset Differences Effective Income Tax Reconciliation, Regulatory Treatment Of Fixed Asset Differences Sale of stock, number of shares issued in transaction, amount Sale of Stock, Number of Shares Issued in Transaction, Amount Sale of Stock, Number of Shares Issued in Transaction, Amount Investment, Name [Axis] Investment, Name [Axis] Use of Derivative Instruments Derivatives, Policy [Policy Text Block] Less effectiveness, amortization period Assumption, Less Effectiveness, Amortization Period Assumption, Less Effectiveness, Amortization Period Net change in cash, cash equivalents, and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Average annual statewide claims or settlements Assumption, Average Annual Statewide Claims Or Settlements Assumption, Average Annual Statewide Claims Or Settlements Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income (Loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of Regulatory Assets [Table] Schedule of Regulatory Assets [Table] Document Fiscal Year Focus Document Fiscal Year Focus Fire risk mitigation memorandum account Fire Risk Mitigation Memorandum Account [Member] Fire Risk Mitigation Memorandum Account [Member] Number of structures destroyed (structure) Loss Contingency, Number Of Structures Destroyed Loss Contingency, Number Of Structures Destroyed Subsequent Event Type [Domain] Subsequent Event Type [Domain] Proceeds from financing obligation Proceeds from Financing Obligation Proceeds from Financing Obligation Pension benefits Pension Costs [Member] Equity Units issued Proceeds from Issuance or Sale of Equity First preferred stock, cumulative, par value $25 per share, 5% nonredeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 5% Nonredeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 5% Nonredeemable [Member] Sale of Stock [Axis] Sale of Stock [Axis] Long-Term Regulatory Liabilities Schedule Of Long Term Regulatory Liabilities [Table Text Block] Schedule Of Long Term Regulatory Liabilities Debt [Line Items] Debt [Line Items] Debt [Line Items] Lease, security letter of credit Lease, Security Letter Of Credit Lease, Security Letter Of Credit Utility Owned Generation Facilities and Third Party Disposal Sites Utility Owned Generation Facilities And Third Party Disposal Sites [Member] Utility Owned Generation Facilities And Third Party Disposal Sites [Member] First preferred stock, cumulative, par value $25 per share, 4.80% redeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 4.80% Redeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 4.80% Redeemable [Member] Number of felonies counts of recklessly causing a fire to property of another (felony) Loss Contingency, Number of Felonies Counts of Recklessly Causing a Fire to Property of Another Loss Contingency, Number of Felonies Counts of Recklessly Causing a Fire to Property of Another Number of felonies counts of involuntary manslaughter (felony) Loss Contingency, Number Of Felonies Counts Of Involuntary Manslaughter Loss Contingency, Number Of Felonies Counts Of Involuntary Manslaughter Customer Harm Threshold, post-emergence transaction, debt retirement Loss Contingency, Customer Harm Threshold, Post-emergence Transaction, Debt Retirement Loss Contingency, Customer Harm Threshold, Post-emergence Transaction, Debt Retirement SFGO Sale SFGO Sale [Member] SFGO Sale Proceeds from regulatory liabilities, current Proceeds from Regulatory Liabilities, Current Proceeds from Regulatory Liabilities, Current August 1, 2021 to August 1, 2022 Insurance Coverage, Period Four [Member] Insurance Coverage, Period Four Amortization of net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Wildfire Expense Memorandum Account - Incremental Claims Wildfire Expense Memorandum Account - Incremental Claims [Member] Wildfire Expense Memorandum Account - Incremental Claims Utility retained generation Utility Retained Generation [Member] Utility Retained Generation [Member] Preferred stock Preferred Stock, Value, Issued Fire Risk Mitigation Capital Expenditures Fire Risk Mitigation Capital Expenditures [Member] Fire Risk Mitigation Capital Expenditures Reinvested Earnings Retained Earnings [Member] Equity contribution from PG&E Corporation Proceeds from Contributions from Parent Price risk management Price Risk Management [Member] Derivative instrument whose primary underlying is tied to price risk. Includes physical and financial derivative contracts, forwards, swaps, options and congestion revenue rights that are traded either on an exchange or over the counter. First preferred stock, cumulative, par value $25 per share, 4.50% redeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 4.50% Redeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 4.50% Redeemable [Member] Federal Income Tax Note [Table] Federal Income Tax Note [Table] Reinsurance Liability Insurance Coverage, Reinsurance Liability Insurance Coverage, Reinsurance Capital expenditures financed through accounts payable Capital Expenditures Incurred but Not yet Paid Formula Rate [Axis] Formula Rate [Axis] Formula Rate CEMA Interim Rate Relief CEMA Interim Rate Relief [Member] CEMA Interim Rate Relief Potential loss contingency, additional Potential Loss Contingency, Additional Potential Loss Contingency, Additional Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Comprehensive Income (Loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 2017 Northern California Wildfires CEMA Expense and Capital (CEMA) 2017 Northern California Wildfires CEMA Expense and Capital [Member] 2017 Northern California Wildfires CEMA Expense and Capital Wildfire fund, noncurrent Estimated Litigation Liability, Noncurrent Number of people part of mandatory evacuation order (people) Number Of People Part Of Mandatory Evacuation Order Number Of People Part Of Mandatory Evacuation Order Net Income (Loss) Per Common Share, Basic (in dollars per share) Earnings Per Share, Basic Preferred stock dividend requirement of subsidiary Comprehensive Income Preferred Stock Dividend Requirement Of Subsidiary Represents dividends paid by the Utility to shareholders of outstanding preferred stock Former manufactured gas plant sites owned by the Utility or third parties Former Manufactured Gas Plant Sites Owned By Utility Or Third Parties Former Mgp Sites Owned By Utility Or Third Parties Expected capitalization, initial contribution Loss Contingency, Expected Capitalization, Initial Contribution Loss Contingency, Expected Capitalization, Initial Contribution The New York Stock Exchange NEW YORK STOCK EXCHANGE, INC. [Member] Transportation service only Transportation Service [Member] Transportation Service [Member] Document Type Document Type Common stock, shares authorized, reserve, additional shares due to nonconforming new shares (in shares) Common Stock, Shares Authorized, Reserve, Additional Shares Common Stock, Shares Authorized, Reserve, Additional Shares Fair Value Measurement [Domain] Fair Value Measurement [Domain] Loss Contingency Accrual [Roll Forward] Loss Contingency Accrual [Roll Forward] Entity Current Reporting Status Entity Current Reporting Status Distribution Safety Inspections and Repairs Expense (FRMMA/WMPMA) Distribution Safety Inspections and Repairs Expense [Member] Distribution Safety Inspections and Repairs Expense Short-term investments Money Market Investments [Member] Money Market Investments [Member] Number of residential structures destroyed (structure) Loss Contingency, Number Of Residential Structures Destroyed Loss Contingency, Number Of Residential Structures Destroyed Gross Derivative Assets Derivative Asset, Fair Value, Gross Asset Less: Restricted cash and restricted cash equivalents Restricted Cash and Cash Equivalents Topock Site Topock Site [Member] Topock Site [Member] Site Contingency [Line Items] Site Contingency [Line Items] Regulatory Liability [Axis] Regulatory Liability [Axis] Topock, Arizona Topock, Arizona [Member] Topock, Arizona Assets: Assets, Fair Value Disclosure [Abstract] Long-term debt Long-term Debt Price risk management instruments, netting Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset Proceeds from sales and maturities of nuclear decommissioning trust investments Proceeds from sales and maturities of nuclear decommissioning trust investments Proceeds from Decommissioning Trust Fund Assets Level 1 Fair Value, Inputs, Level 1 [Member] Cash Flows from Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Long-term disability trust Long Term Disability Trust [Member] LTD is one of PG&E's benefit plans, they are composed primarily of equity securities, debt securities, and life insurance policies Proceeds from regulatory liabilities, noncurrent Proceeds from Regulatory Liabilities, Noncurrent Proceeds from Regulatory Liabilities, Noncurrent Other Other Customers [Member] Other Customers [Member] Comprehensive Income (Loss) Attributable to Common Shareholders Comprehensive Income, Net Of Tax, Available To Common Stockholders, Basic Comprehensive Income, Net Of Tax, Available To Common Stockholders, Basic Exchanged debt financing fees Payment For Exchanged Debt Financing Fees Payment For Exchanged Debt Financing Fees Pending Litigation Pending Litigation [Member] Insurance receivable Liability Insurance Coverage, Insurance Receivable Liability Insurance Coverage, Insurance Receivable Wildfire-related receivables Increase (Decrease) in Insurance Settlements Receivable Loss Contingency, Amortization Period Loss Contingency, Amortization Period Loss Contingency, Amortization Period Additional paid-in capital Additional Paid in Capital Capital expenditures for future recovery Loss Contingency, Capital Expenditures For Future Recovery Loss Contingency, Capital Expenditures For Future Recovery 5 year period Five Year Historical Period [Member] Five Year Historical Period LIABILITIES AND EQUITY Liabilities and Equity [Abstract] Total regulatory balancing accounts receivable Regulatory Balancing Accounts Receivable [Member] The Utility records differences between (1) authorized revenue requirements and actual customer billings, and (2) between incurred costs and customer billings. To the extent these differences are probable of recovery over the next 12 months, the Utility records a current regulatory balancing account receivable. Accounts payable Increase (Decrease) in Accounts Payable COVID-19 pandemic protection memorandum account COVID-19 Pandemic Protection Memorandum Account [Member] COVID-19 Pandemic Protection Memorandum Account Equity Units Equity Units [Member] Equity Units Percentage of fire contained Loss Contingency, Percentage of Fire Contained Loss Contingency, Percentage of Fire Contained Wildfire Fund asset Wildfire fund, noncurrent asset Litigation Asset, Noncurrent Litigation Asset, Noncurrent Other current assets and liabilities Increase (Decrease) in Other Current Assets and Liabilities, Net Legal and other Debtor Reorganization Items, Legal and Advisory Professional Fees Gross realized gains on securities Debt Securities, Available-for-sale, Realized Gain ORGANIZATION AND BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Rentable square feet (sqft) Net Rentable Area NYSE American LLC NYSE AMERICAN LLC [Member] NYSE AMERICAN LLC [Member] Total Unrealized Gains Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax Trading Symbol Trading Symbol Loss contingency, damages sought Loss Contingency, Damages Sought, Value Expected wildfire fund allocation metric, initial contribution Loss Contingency, Expected Wildfire Fund Allocation Metric, Initial Contribution Loss Contingency, Expected Wildfire Fund Allocation Metric, Initial Contribution Percentage of common stock owned, Fire Victim Trust if common issues additional shares Percentage of Common Stock Owned, Litigation Settlement If Common Issues Additional Shares Percentage of Common Stock Owned, Litigation Settlement, If Company Issues Additional Shares Current Liabilities Liabilities, Current [Abstract] Reduction to accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant and Equipment, Period Increase (Decrease) Requested depreciation rate Public Utilities, Requested Rate, Depreciation, Percentage Public Utilities, Requested Rate, Depreciation, Percentage Accounting Policies [Abstract] Accounting Policies [Abstract] Former Manufactured Gas Plant Former Manufactured Gas Plant [Member] Former Manufactured Gas Plant [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Costs incurred Loss Contingency, Costs Incurred Loss Contingency, Costs Incurred Debtor-in-possession credit facility debt issuance costs Payments For Debtor-In-Possession Facility Financing Costs Payments For Debtor-In-Possession Facility Financing Costs SBA Communications Corporation SBA Communications Corporation [Member] SBA Communications Corporation Reorganization items, net (Note 2) Reorganization Items, Noncash Reorganization Items, Noncash Common stock, no par value, authorized 3,600,000,000 shares at respective dates; 1,985,369,201 and 1,984,678,673 shares outstanding at respective dates Common Stock, Value, Issued Nuclear Electric Insurance Limited Nuclear Electric Insurance Limited [Member] Nuclear Electric Insurance Limited is a mutual insurer owned by utilities with nuclear facilities. Transmission Owner Rate Case Revenue Transmission Owner Rate Case Revenue [Member] Transmission Owner Rate Case Revenue Utility-owned generation facilities (other than fossil fuel-fired), other facilities, and third-party disposal sites Utility Owned Generation Facilities Other Than For Fossil Fuel Fired Other Facilities And Third Party Disposal Sites Utility-Owned Generation Facilities (Other Than For Fossil Fuel-Fired), Other Facilities, And Third-Party Disposal Sites Number of complaint (complaint) Loss Contingency, Number of Complaints Loss Contingency, Number of Complaints 2016 to 2017 Catastrophic Event, Period Two [Member] Catastrophic Event, Period Two Insurance Coverage For Non-Wildfire Events Insurance Coverage For Non-Wildfire Liabilities [Member] Insurance Coverage For Non-Wildfire Liabilities Schedule of Unrealized Gains (Losses) Related to Available-For-Sale Investments Schedule Of Unrealized Gains Losses Related To Available For Sale Investments [Table Text Block] Schedule of Unrealized Gains Losses Related To Available For Sale Investments Options Options Held [Member] Number of misdemeanors related to violation by a public utility (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Violation By A Public Utility Loss Contingency, Number Of Misdemeanors Related To Violation By A Public Utility AB 1054 Wildfire Fund AB 1054 Wildfire Fund [Member] AB 1054 Wildfire Fund Remediation cost recovery percentage Remediation Cost Recovery Percentage Remediation Cost Recovery Percentage Initial self-insured retention per occurrence Liability Insurance Coverage, Initial Self-Insured Retention Per Occurrence Liability Insurance Coverage, Initial Self-Insured Retention Per Occurrence Employee share-based compensation (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Proceeds from contract liability Proceeds from Contract Liability Proceeds from Contract Liability Class of Stock [Axis] Class of Stock [Axis] Natural gas Natural gas Natural Gas Natural Gas, US Regulated [Member] Proceeds from sale of buildings Proceeds from Sale of Buildings Number of claims (claim) Loss Contingency, Number of Claims Loss Contingency, Number of Claims National Forrest National Forrest [Member] National Forrest Regulatory Balancing Accounts [Domain] Regulatory Balancing Accounts [Domain] Regulatory balancing accounts record the differences between revenues and costs that can be recovered through rates. Total operating revenues Revenue from Contract with Customer, Excluding Assessed Tax First preferred stock, cumulative, par value $25 per share, 6% nonredeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 6% Nonredeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 6% Nonredeemable [Member] PSPS Class Action PSPS Class Action [Member] PSPS Class Action Amount primarily related to deferred taxes on appreciation of investment value Amount Primarily Related To Deferred Taxes On Appreciation Of Investment Value Amount primarily related to deferred taxes on appreciation of investment value Electric transmission Electric Transmission [Member] First preferred stock, cumulative, par value $25 per share, 5.50% nonredeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 5.50% Nonredeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 5.50% Nonredeemable [Member] Annual contribution, second payment Litigation, Annual Contribution, Second Payment Litigation, Annual Contribution, Second Payment Nuclear Insurance Coverage [Domain] Nuclear Insurance Coverage [Domain] Nuclear Insurance Coverage [Domain] Number of catastrophic events Loss Contingency, Number of Catastrophic Events Loss Contingency, Number of Catastrophic Events Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Equity [Abstract] Zogg Complaint, 2020 Zogg Complaint, 2020 [Member] Zogg Complaint, 2020 Accounts Receivable from Securitization Accounts Receivable from Securitization Wildfire mitigation balancing account Wildfire Mitigation Balancing Account [Member] Wildfire Mitigation Balancing Account Regulatory liabilities Total long-term regulatory liabilities Regulatory Liability, Noncurrent Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Regulatory Asset [Axis] Regulatory Asset [Axis] WMCE Interim Rate Relief WMCE Interim Rate Relief [Member] WMCE Interim Rate Relief 1–5 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Number of felonies (felony) Loss Contingency, Number Of Felonies Loss Contingency, Number Of Felonies Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total operating expenses Operating Costs and Expenses Additional Paid-in Capital Additional Paid-in Capital [Member] Insurance Coverage for Wildfire Events Insurance Coverage For Wildfire Events [Member] Insurance Coverage For Wildfire Events [Member] First Mortgage Bonds, Exchange Stated Maturity 2041 First Mortgage Bonds, Exchange Stated Maturity 2041 [Member] First Mortgage Bonds, Exchange Stated Maturity 2041 Regulatory assets Regulatory Assets Repayments of debt Repayments of Debt Additional revenue requirement Loss Contingency, Cost Recovery, Additional Revenue Requirement Loss Contingency, Cost Recovery, Additional Revenue Requirement Catastrophic event memorandum account Catastrophic event memorandum account Catastrophic Event Memorandum Account [Member] Catastrophic Event Memorandum Account [Member] Litigation settlement, amount awarded from other party Litigation Settlement, Amount Awarded from Other Party Cost percentage threshold requiring approval Regulatory Assets, Cost Percentage Threshold Requiring Approval Regulatory Assets, Cost Percentage Threshold Requiring Approval Price risk management instruments, netting Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset 2021 Fly Fire Fly Fire, 2021 [Member] Fly Fire, 2021 Borrowings under credit facilities Proceeds from Lines of Credit Liabilities subject to compromise Increase (Decrease) In Liabilities Subject To Compromise Increase (Decrease) In Liabilities Subject To Compromise Environmental Remediation Site [Domain] Environmental Remediation Site [Domain] Other income, net Other Nonoperating Income (Expense) Regulatory Balancing Accounts Payable Schedule Regulatory Balancing Accounts Payable [Table Text Block] The amount for the individual regulatory balancing accounts as itemized in a table of regulatory balancing accounts payable as of the end of the period. Regulatory Assets [Line Items] Regulatory Assets [Line Items] Other Payments for (Proceeds from) Other Investing Activities Prepaid Insurance Prepaid Insurance Wireless Licenses Wireless Licenses [Member] Wireless Licenses Wildfire-related claims, net of recoveries Loss From Catastrophes (Gain From Insurance Recovery) Loss From Catastrophes (Gain From Insurance Recovery) Maximum Maximum [Member] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Legal Entity [Axis] Legal Entity [Axis] Petition review, pending substantive order duration Loss Contingency, Petition Review, Pending Substantive Order Duration Loss Contingency, Petition Review, Pending Substantive Order Duration Income taxes receivable Income Taxes Receivable, Noncurrent Mid 2016 - Early 2017 Catastrophic Event, Period One [Member] Catastrophic Event, Period One Common stock, no par value Common Stock, No Par Value [Member] Common Stock, No Par Value [Member] Total shareholders’ equity Stockholders' Equity Attributable to Parent Accounts receivable Increase (Decrease) in Accounts and Notes Receivable Proceeds from debtor-in-possession credit facility Proceeds From Debtor-in-Possession Financing Proceeds From Debtor-in-Possession Financing Financing Receivable, Allowance for Credit Loss [Table] Financing Receivable, Allowance for Credit Loss [Table] Number of parties granted for rehearing related to Tax Act Loss Contingency, Number of Parties Granted for Rehearing Related to Tax Act Loss Contingency, Number of Parties Granted for Rehearing Related to Tax Act Equity backstop premium expense, bridge loan facility fees, and trustee fees Debtor Reorganization Items, Debt Fees Debtor Reorganization Items, Debt Fees Debt, number of extension options Debt, Number of Extension Options Debt, Number of Extension Options Number of demurrer filed (count) Loss Contingency, Number of Demurrer Filed Loss Contingency, Number of Demurrer Filed Amount subject to audit Loss Contingency, Interim Rate Remaining, Amount Subject To Audit Loss Contingency, Interim Rate Remaining, Amount Subject To Audit Shareholders’ Equity Stockholders' Equity Attributable to Parent [Abstract] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Congestion Revenue Rights Congested Revenue Rights [Member] Congested Revenue Rights Insurance Insurance [Member] Insurance Operating lease liabilities Operating Lease, Liability, Noncurrent Debt instrument, face amount Debt Instrument, Face Amount Residential uncollectibles balancing accounts Residential Uncollectibles Balancing Accounts [Member] Residential Uncollectibles Balancing Accounts Total Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Duration of contract Sale of Transmission Tower, Duration of Contract Sale of Transmission Tower, Duration of Contract Number of commercial structures damaged (structure) Loss Contingency, Number Of Commercial Structures Damaged Loss Contingency, Number Of Commercial Structures Damaged Schedule of Defined Benefit Plans Disclosures [Table] Schedule of Defined Benefit Plans Disclosures [Table] Term of contract Lessee, Operating Lease, Term of Contract Current liabilities – other Current Liabilities [Member] Current Liabilities [Member] Fire Victim Trust Fire Victim Trust [Member] Fire Victim Trust Initial contribution payment Litigation, Initial Contribution Payment Litigation, Initial Contribution Payment Vegetation management balancing account Vegetation Management Balancing Account [Member] Vegetation Management Balancing Account Discounted cash flow Valuation Technique, Discounted Cash Flow [Member] Tower Licenses Tower Licenses [Member] Tower Licenses Income Statement [Abstract] Income Statement [Abstract] Asset Class [Domain] Asset Class [Domain] Total regulatory balancing accounts payable Regulatory Balancing Accounts Payable [Member] The Utility records differences between (1) authorized revenue requirements and actual customer billings, and (2) between incurred costs and customer billings. To the extent these differences are probable of refund over the next 12 months, the Utility records a current regulatory balancing account payable. Intercompany note to PG&E Corporation Intercompany note Intercompany Note Intercompany Note Breach of Fiduciary Duties Breach Of Fiduciary Duties [Member] Breach Of Fiduciary Duties [Member] June 1, 2021 to April 1, 2022 Insurance Coverage, Period Five [Member] Insurance Coverage, Period Five Income tax provision (benefit) Income Tax Expense (Benefit) COVID-19 COVID-19 [Member] COVID-19 Insurance premium costs, recovery, coverage amount Insurance Premium Costs, Recovery, Coverage Amount Insurance Premium Costs, Recovery, Coverage Amount Accelerated amortization Accelerated Amortization Accelerated Amortization Customers (net of allowance for doubtful accounts of $306 million and $146 million at respective dates) (includes $1.59 billion and $1.63 billion related to VIEs, net of allowance for doubtful accounts of $306 million and $143 million at respective dates) Customers (net of allowance for doubtful accounts) Accounts Receivable, after Allowance for Credit Loss, Current Other Other Regulatory Assets (Liabilities) [Member] Office space Office Space [Member] Office Space Repayments of debtor-in-possession credit facility Repayments Of Debtor-in-Possession Financing Repayments Of Debtor-in-Possession Financing Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Fire Victim Trust Effective Income Tax Rate Reconciliation, Fire Victim Trust Effective Income Tax Rate Reconciliation, Fire Victim Trust Total current assets Assets, Current Payments (refunds) for reorganization items Payments (Refunds) For Reorganization Items Payments (Refunds) For Reorganization Items Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] Loss from Wildfires Loss from Catastrophes [Member] Long-term debt, classified as current Long-term Debt, Current Maturities Global equity securities Global Equity Securities [Member] Global Equity Securities [Member] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Cash Flows from Financing Activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Small Business Entity Small Business 2019 Kincade Fire Kincade Fire, 2019 [Member] Kincade Fire, 2019 Litigation settlement, approval of settlement, escrow deposit, number of days Litigation Settlement, Approval of Settlement, Escrow Deposit, Number Of Days Litigation Settlement, Approval of Settlement, Escrow Deposit, Number Of Days Potential loss contingency Potential Loss Contingency Potential Loss Contingency Number of civil cases (civil case) Loss Contingency, Number Of Civil Cases Loss Contingency, Number Of Civil Cases Included in regulatory assets and liabilities or balancing accounts Fair Value, Net Derivative Asset (Liability) Measured On Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included In Regulatory Assets And Liabilities Fair value measurement with unobservable inputs reconciliation recurring basis liability gain loss included in regulatory assets liabilities. Market approach Valuation, Market Approach [Member] Equity Component [Domain] Equity Component [Domain] Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Other Other Receivables Price Risk Derivative, Gas Price Risk Derivative, Gas [Member] Price Risk Derivative, Gas [Member] Gas Gas Property Plant And Equipment Property plant and equipment are reported at their original cost. These original costs include labor and materials, construction overhead, and allowance for funds used during construction ("AFUDC"). Amount does not include depreciation. Exchange [Domain] Exchange [Domain] Litigation Case [Axis] Litigation Case [Axis] Number of plaintiffs represented by complaints (plaintiff) Loss Contingency, Number of Plaintiffs Represented By Complaints Loss Contingency, Number of Plaintiffs Represented By Complaints Effective Date Effective Date [Member] Effective Date Counterparty Name [Domain] Counterparty Name [Domain] Weighted Average Price Weighted Average [Member] Income (Loss) Before Income Taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Level 2 Fair Value, Inputs, Level 2 [Member] Document Information [Table] Document Information [Table] Increase in common stock Common Stock, Value, Increase (Decrease) Common Stock, Value, Increase (Decrease) Assumption, Period [Domain] Assumption, Period [Domain] Assumption, Period Gas transmission and storage capital disallowance Gas Transmission And Storage Capital Disallowance Capital disallowance in relation to GT&S cases Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Finite-lived intangible asset, useful life Finite-Lived Intangible Asset, Useful Life Commodity Risk Commodity Contract [Member] Use of Estimates and Assumptions Use of Estimates, Policy [Policy Text Block] Total other comprehensive income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Total Derivative Balance, Assets Derivative Asset, Fair Value, Amount Offset Against Collateral Investment, Name [Domain] Investment, Name [Domain] Catastrophic Event, Period [Axis] Catastrophic Event, Period [Axis] Catastrophic Event, Period Deferred income taxes and tax credits, net Deferred Income Taxes and Tax Credits Common stock, shares authorized (in shares) Common Stock, Shares Authorized Income (loss) attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Income (Loss) Attributable to Common Shareholders Income (loss) attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic WEMA WEMA [Member] WEMA Wildfire-related claims Increase (Decrease) To Catastrophes Related Third Party Claims Increase (Decrease) To Catastrophes Related Third Party Claims Product and Service [Domain] Product and Service [Domain] Transmission Safety Inspections and Repairs Expense (TO) Transmission Safety Inspections and Repairs Expense [Member] Transmission Safety Inspections and Repairs Expense Stated interest rate Debt Instrument, Interest Rate, Stated Percentage Schedule of Maturities on Debt Instruments Schedule Of Available For Sale Securities Table [Table Text Block] Schedule Of Available For Sale Securities Table [Text Block] Expenses and capital expenditures, disallowed costs Loss Contingency, Expenses and Capital Expenditures, Disallowed Costs Loss Contingency, Expenses and Capital Expenditures, Disallowed Costs BANKRUPTCY FILING Reorganization under Chapter 11 of US Bankruptcy Code Disclosure [Text Block] Revolving Credit Facility Revolving Credit Facility [Member] Number of minors (minor) Loss Contingency, Number Of Minors Loss Contingency, Number Of Minors Geographical [Axis] Geographical [Axis] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Recovery period Regulatory Assets, Recovery Period Regulatory Assets, Recovery Period Number of parties whom filed for rehearing with company response (party) Loss Contingency, Number of Parties Whom Filed For Rehearing With Company Response Loss Contingency, Number of Parties Whom Filed For Rehearing With Company Response Proceeds from sale of future revenue from transmission tower license sales, net of fees Proceeds from Sale of Future Revenue From Transmission Tower License Sales, Net of Fees Proceeds from Sale of Future Revenue From Transmission Tower License Sales, Net of Fees Cash Collateral Derivative, Collateral, Right to Reclaim Cash Interest income Debtor Reorganization Items, Interest Income on Accumulated Cash Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Treasury stock, at cost; 477,743,590 and 0 shares at respective dates Treasury Stock, Value Environmental compliance costs Environmental Compliance Costs [Member] The regulatory asset for environmental compliance costs represents the cumulative differences between amounts recognized for ratemaking purposes and amounts recognized in accordance with GAAP. The Utility expects to recover these costs over the next 32 years, as the environmental compliance work is performed Percentage assumption change Percentage Assumption Change Percentage Assumption Change Insurance premium costs Insurance Premium Costs [Member] Insurance Premium Costs Other Property, Plant and Equipment, Other, Gross FAIR VALUE MEASUREMENTS Fair Value Disclosures [Text Block] Allowance for equity funds used during construction Increase (Decrease) in Allowance for Equity Funds Used During Construction Liability insurance coverage Liability Insurance Coverage The Utility's liability insurance for potential losses that may result from the Northern California Fires. Life insurance contracts Life Settlement Contracts, Fair Value Litigation liability, current Estimated Litigation Liability, Current Volumes of Outstanding Derivative Contracts Volume Of Outstanding Derivative Contracts [Table Text Block] Volume of outstanding derivative contracts Accounts payable: Accounts Payable, Current [Abstract] Period for probable revenue recovery Regulated Operating Revenue, Expected Collection Period Regulated Operating Revenue, Expected Collection Period Derivative [Table] Derivative [Table] Increase to PG&E Corporation common stock and treasury stock in connection with the PG&E Fire Victim Trust Share Exchange and Tax Matters Agreement Treasury Stock Acquired, Noncash Treasury Stock Acquired, Noncash Total Derivative Balance, Liabilities Derivative Liability, Fair Value, Amount Offset Against Collateral Assets measured at NAV Alternative Investment Operating Revenues Revenues [Abstract] Regulatory Balancing Accounts Receivable Schedule Of Regulatory Balancing Accounts Receivable [Table Text Block] The amount for the individual regulatory balancing accounts as itemized in a table of regulatory balancing accounts receivable as of the end of the period. Unusual or Infrequent Item, or Both [Domain] Unusual or Infrequent Item, or Both [Domain] 2017 Northern California wildfires Nothern California Wild Fire [Member] Nothern California Wild Fire [Member] Debtor-in-possession financing costs Debtor Reorganization Items, Debtor-in-Possession Facility Financing Costs Consolidated Entities [Domain] Consolidated Entities [Domain] Allowance for credit loss Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) State income tax (net of federal benefit) Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent Debt instrument, term (in days) Debt Instrument, Term Income Statement Location [Domain] Income Statement Location [Domain] Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-sale [Table] Percentage of equity security ownership with board of director approval Sale of Stock, Percentage of Equity Security Ownership with Board of Director Approval Sale of Stock, Percentage of Equity Security Ownership without Board of Director Approval Supplemental disclosures of noncash investing and financing activities Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Long-term Purchase Commitment [Line Items] Long-term Purchase Commitment [Line Items] Cash transferred Fire Victim Trust, Cash Transferred Fire Victim Trust, Cash Transferred Customer Harm Threshold, post-emergence transaction, securitized Loss Contingency, Customer Harm Threshold, Post-emergence Transaction, Securitized Loss Contingency, Customer Harm Threshold, Post-emergence Transaction, Securitized Net property, plant, and equipment Property, Plant and Equipment, Net Accumulated Other Comprehensive Income (Loss) AOCI Including Portion Attributable to Noncontrolling Interest [Member] Repayment of long-term debt Repayments of Long-term Debt Earnings Per Share [Abstract] Earnings Per Share [Abstract] Number of misdemeanors related to recklessly emitting air contamination that results in an unreasonable risk of great bodily injury (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Recklessly Or Negligently Emitting Air Contaminants That Results In An Unreasonable Risk Of Great Bodily Injury Loss Contingency, Number Of Misdemeanors Related To Recklessly Or Negligently Emitting Air Contaminants That Results In An Unreasonable Risk Of Great Bodily Injury Total property, plant, and equipment Property, Plant and Equipment, Gross Total operating revenues Revenues Number of structures damaged (structure) Number Of Structures Damaged Number of structures reported damaged in the Butte fire Amounts reclassified from other comprehensive income Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Wildfire mitigation plan memorandum account Wild Fire Mitigation Plan Memorandum Account [Member] Wild Fire Mitigation Plan Memorandum Account Wildfire Expense Memorandum Account - Premium Costs Wildfire Expense Memorandum Account - Premium Costs [Member] Wildfire Expense Memorandum Account - Premium Costs Loss accrual, beginning balance Loss accrual, ending balance Loss Contingency Accrual Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding 18-Month Term Loan Facility 18-Month Term Loan Facility [Member] 18-Month Term Loan Facility Public purpose programs Public Purpose Programs [Member] The public purpose programs balancing accounts primarily track the recovery of the authorized public purpose program revenue requirements, the actual costs of such programs, and incentive awards earned by the Utility for implementing customer energy efficiency programs. Asset Acquisition [Domain] Asset Acquisition [Domain] Number of misdemeanors related to failure to comply with regulations (misdemeanor) Loss Contingency, Number Of Misdemeanor Counts Related to Failure To Comply With Regulations Loss Contingency, Number Of Misdemeanor Counts Related to Failure To Comply With Regulations Depreciation, amortization, and decommissioning Depreciation Amortization Decommissioning Income Statement The current period expense, as reported in the income statement, charged against earnings on long-lived, physical assets used in the normal conduct of business and not intended for resale to allocate or recognize the cost of assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset. Examples include buildings, production equipment and customer lists. Contributions to Wildfire Fund Increase (Decrease) In Contributions Increase (Decrease) In Contributions Document Fiscal Period Focus Document Fiscal Period Focus Effective tax rate Effective Income Tax Rate Reconciliation, Percent August 1, 2020 to August 1, 2021 Insurance Coverage, Period Three [Member] Insurance Coverage, Period Three Counterparty Name [Axis] Counterparty Name [Axis] Regulatory assets Total long-term regulatory assets Regulatory Assets, Noncurrent Wildfire-related claims Wildfire-related Claims Wildfire-related Claims Accrued unbilled revenue (includes $1.03 billion and $959 million related to VIEs at respective dates) Accrued unbilled revenue Contract with Customer, Asset, after Allowance for Credit Loss, Current Effective Date Towers Effective Date Towers [Member] Effective Date Towers Expected wildfire fund allocation metric, percentage Loss Contingency, Expected Wildfire Fund Allocation Metric, Percentage Loss Contingency, Expected Wildfire Fund Allocation Metric, Percentage Price Risk Derivative, Electricity Price Risk Derivative, Electricity [Member] Price Risk Derivative, Electricity [Member] Price risk management instruments, gross subject to netting Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Revenue Recognition Revenue from Contract with Customer [Policy Text Block] Operating lease liabilities arising from obtaining right-of-use assets Operating Lease Liabilities Arising From Obtaining Right-of-use Assets Operating Lease Liabilities Arising From Obtaining Right-of-use Assets Weighted Average Common Shares Outstanding, Diluted (in shares) Weighted average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Accrued insurance recoveries Insurance Recoveries 2022 Loss Contingency Nature, Period Three [Member] Loss Contingency Nature, Period Three PG&E ShareCo LLC PG&E ShareCo LLC [Member] PG&E ShareCo LLC Number of firefighters and/or burned inhabited and other structures (firefighter/structure) Loss Contingency, Number Of Firefighters And/or Burned Inhabited And Other Structures Loss Contingency, Number Of Firefighters And/or Burned Inhabited And Other Structures Regulatory Liabilities [Line Items] Regulatory Liabilities [Line Items] Number of acres burned (acre) Number Of Acres Burned Acres burned down in the Butte Fire. Components of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Debt [Table] Debt [Table] Debt [Table] Number of felonies counts of emission of air contaminants (felony) Loss Contingency, Number Of Felonies Counts Of Emission Of Air Contaminants Loss Contingency, Number Of Felonies Counts Of Emission Of Air Contaminants Ponder Fire, 2020 Ponder Fire, 2020 [Member] Ponder Fire, 2020 Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Asset retirement obligations Asset Retirement Obligations, Noncurrent Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Regulatory assets, liabilities, and balancing accounts, net Regulatory Assets Liabilities And Balancing Accounts Net The change in individual regulatory asset, liability or balancing account at the end of the period, net. Other Other Current Balancing Accounts [Member] Regulatory balancing accounts record the differences between revenues and costs that can be recovered through rates. The aggregate carrying amounts, as of the balance sheet date, of current regulatory balancing accounts not separately disclosed in the footnote. Accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Pre-tax gain on sale of building Gain On Sale Of Building, Pretax Gain On Sale Of Building, Pretax Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] 2020 Zogg Fire Zogg Fire, 2020 [Member] Zogg Fire, 2020 Depreciation, amortization, and decommissioning Depreciation Amortization Decommissioning The current period expense charged against earnings on long-lived, physical assets used in the normal conduct of business and not intended for resale to allocate or recognize the cost of assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset. Examples include buildings, production equipment and customer lists. Total current liabilities Liabilities, Current Litigation Status [Domain] Litigation Status [Domain] Trade creditors Accounts Payable, Trade, Current Amount of property damage and business interruption coverage provided by NEIL for Diablo Canyon Property Damage And Business Interruption Coverage Per Incident Property damage and business interruption coverage per nuclear incident provided by nuclear insurance Retained generation asset costs Retained Generation Asset Costs Retained Generation Asset Costs Loss Contingencies [Table] Loss Contingencies [Table] Total revenue from contracts with customers Revenue from Contract with Customer, Including Assessed Tax Borrowings under term loan credit facilities Proceeds from Other Short-term Debt Entity Address, Postal Zip Code Entity Address, Postal Zip Code Net of discount and issuance costs Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net Expense Loss Contingency, Expenses and Capital Expenditures, Expenses Loss Contingency, Expenses and Capital Expenditures, Expenses Proofs of claims Plan of Reorganization, Proofs of Claims Plan of Reorganization, Proofs of Claim Number of fuses opened (fuse) Loss Contingency, Number of Total Fuses Opened Loss Contingency, Number of Total Fuses Opened Fire risk and wildfire mitigation memorandum account Fire Risk Mitigation Memorandum Account and Wildfire Mitigation Plan Memorandum Account [Member] Fire Risk Mitigation Memorandum Account and Wildfire Mitigation Plan Memorandum Account Title of 12(b) Security Title of 12(b) Security Pre-petition long-term debt repaid Repayments Of Pre-petition Long-term Debt Repayments Of Pre-petition Long-term Debt Statement [Table] Statement [Table] Amount of environmental loss actual expected to be recovered Accrual for Environmental Loss Contingencies 2018 Camp Fire CEMA Capital for Temporary Facilities (CEMA) 2018 Camp Fire CEMA Capital for Temporary Facilities [Member] 2018 Camp Fire CEMA Capital for Temporary Facilities Recently Adopted Accounting Standards and Accounting Standards Issued But Not Yet Adopted New Accounting Pronouncements, Policy [Policy Text Block] Labor rates, allocation percentage Public Utilities, Labor Rates, Allocation Percentage Public Utilities, Labor Rates, Allocation Percentage Diablo Canyon Diablo Canyon [Member] Diablo Canyon Statistical Measurement [Axis] Statistical Measurement [Axis] Bridge facility financing fees Payment For Bridge Facility Financing Fees Payment For Bridge Facility Financing Fees PG&E AR Facility, LLC PG&E AR Facility, LLC [Member] PG&E AR Facility, LLC Schedule of Debtor Reorganization Items Schedule Of Debtor Reorganization Items [Table Text Block] Schedule Of Debtor Reorganization Items [Table Text Block] Subsequent event Subsequent Event [Member] Cover page. Cover [Abstract] Number of other electric transmission towers Sale of Transmission Tower, Number of Other Electric Transmission Towers Sale of Transmission Tower, Number of Other Electric Transmission Towers Shareholder-funded system enhancement initiatives, amount Loss Contingency, Shareholder-funded System Enhancement Initiatives Loss Contingency, Shareholder-funded System Enhancement Initiatives Noncontrolling Interest - Preferred Stock of Subsidiary Stockholders' Equity Attributable to Noncontrolling Interest Sonoma Contry District Attorney Sonoma Contry District Attorney [Member] Sonoma Contry District Attorney Equity contribution Adjustments To Additional Paid In Capital, Contribution From Parent Adjustments To Additional Paid In Capital, Contribution From Parent Assets measured at NAV Fair Value Measured at Net Asset Value Per Share [Member] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Net non-current accounts receivable Accounts Receivable, after Allowance for Credit Loss, Noncurrent Energy procurement Energy Procurement Costs [Member] The Utility is generally authorized to recover 100% of its prudently incurred electric fuel and energy procurement costs. The Utility tracks energy procurement costs in balancing accounts and files annual forecasts of energy procurement costs that it expects to incur during the following year. Subsequent Event Type [Axis] Subsequent Event Type [Axis] Proceeds received from sale of transmission tower wireless licenses, refunded to customers Proceeds Received From Sale of Transmission Tower Wireless Licenses, Refunded To Customers Proceeds Received From Sale of Transmission Tower Wireless Licenses, Refunded To Customers Unamortized loss, net of gain, on reacquired debt Loss on Reacquired Debt [Member] Bankruptcy and Emergence Effective Income Tax Rate Reconciliation, Bankruptcy, Percent Effective Income Tax Rate Reconciliation, Bankruptcy, Percent Annual contribution, first payment Litigation, Annual Contribution, First Payment Litigation, Annual Contribution, First Payment Number of injuries (injury) Loss Contingency, Number Of Injuries Loss Contingency, Number Of Injuries Monte carlo simulation, historical data, period Monte Carlo Simulation, Historical Data, Period Monte Carlo Simulation, Historical Data, Period Asset Acquisition [Axis] Asset Acquisition [Axis] Number of fatalities (fatality) Number Of Deaths Number of deaths reported in the Butte fire Nuclear decommissioning trusts Nuclear Decommissioning Trust [Member] Nuclear Decommissioning Trust [Member] Federal statutory income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Earnings Per Share Earnings Per Share, Policy [Policy Text Block] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Net Income (Loss) Net Income (Loss) Net Income (Loss) Attributable to Parent Entity Emerging Growth Company Entity Emerging Growth Company Operating lease right of use asset Operating Lease, Right-of-Use Asset Pension and Other Post-Retirement Benefits Pension and Other Postretirement Plans, Policy [Policy Text Block] Interest cost Defined Benefit Plan, Interest Cost Income Statement Location [Axis] Income Statement Location [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two 2021 Dixie Fire Dixie Fire, 2021 [Member] Dixie Fire, 2021 Schedule of Offsetting Assets Offsetting Assets [Table Text Block] Amortization period Assumption, Amortization Period Assumption, Amortization Period Proceeds from sale of SFGO Proceeds from Sale of Property, Plant, and Equipment Site Contingency [Table] Site Contingency [Table] Initial safety certification, period Loss Contingency, Initial Safety Certification, Period Loss Contingency, Initial Safety Certification, Period Entity Filer Category Entity Filer Category Wildfire fund receivables Wildfire Fund Receivables Wildfire Fund Receivables Amortization of prior service cost Accumulated Defined Benefit Plans Adjustment, Net Prior Service Including Portion Attributable to Noncontrolling Interest [Member] European Mutual Association for Nuclear Insurance European Mutual Association for Nuclear Insurance [Member] European Mutual Association for Nuclear Insurance provides excess insurance coverage for property damages and business interruption losses incurred by the Utility if a nuclear or non-nuclear event were to occur at Diablo Canyon. Other (includes net noncurrent accounts receivable of $271 million and $0 related to VIEs, net of noncurrent allowance for doubtful accounts of $51 million and $0 at respective dates) Other Assets, Noncurrent Disputed claims and customer refunds Disputed Claims And Customer Refunds If the amount of accrued interest is greater than the amount of interest ultimately determined to be owed on the remaining net disputed claims, the Utility would refund to customers any excess interest collected. Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Nuclear Electric Insurance Limited and European Mutual Association for Nuclear Insurance Nuclear Electric Insurance Limited and European Mutual Association for Nuclear Insurance [Member] Nuclear Electric Insurance Limited and European Mutual Association for Nuclear Insurance Capital expenditures for future recovery, pending authorization, amortization period Loss Contingency, Capital Expenditures For Future Recovery, Pending Authorization, Amortization Period Loss Contingency, Capital Expenditures For Future Recovery, Pending Authorization, Amortization Period 2018 Camp Fire CEMA Capital for Restoration (CEMA) 2018 Camp Fire CEMA Capital for Restoration [Member] 2018 Camp Fire CEMA Capital for Restoration Public Utility, Property, Plant and Equipment [Table] Public Utility, Property, Plant and Equipment [Table] Number of remaining annual contributions Number of Remaining Annual Contributions Number of Remaining Annual Contributions Derivative Lawsuits Filed in the San Francisco County Superior Court Derivative Lawsuits Filed In The San Francisco County Superior Court [Member] Derivative Lawsuits Filed In The San Francisco County Superior Court [Member] Expected capitalization, annual contribution Loss Contingency, Expected Capitalization, Annual Contribution Loss Contingency, Expected Capitalization, Annual Contribution Employee benefit plans Postretirement Benefit Costs [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Wildfire Fund expense Litigation Settlement, Expense Valuation Approach and Technique [Domain] Valuation Approach and Technique [Domain] Stock-based compensation amortization Stock Based Compensation Amortization Stock Based Compensation Amortization Schedule of Expense and Capital Expenditures Schedule of Expense and Capital Expenditures [Table Text Block] Schedule of Expense and Capital Expenditures Disallowance of Plant Costs Disallowance Of Plant Costs [Member] Costs that have been disallowed to be recoverable by rates Pension and other post-retirement benefits Liability, Defined Benefit Plan, Noncurrent Number of single family homes destroyed (structure) Loss Contingency, Number Of Single Family Homes Destroyed Loss Contingency, Number Of Single Family Homes Destroyed ASSETS Assets [Abstract] 2015 through 2022 Loss Contingency Nature, Period One [Member] Loss Contingency Nature, Period One 364-Day Term Loan Facility 364-Day Term Loan Facility [Member] 364-Day Term Loan Facility DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Requested revenue rate Public Utilities, Requested Revenue Rate, Percentage Public Utilities, Requested Revenue Rate, Percentage Number of commercial structures destroyed (structure) Loss Contingency, Number Of Commercial Structures Destroyed Loss Contingency, Number Of Commercial Structures Destroyed Entity Address, City or Town Entity Address, City or Town Number of felonies counts of recklessly causing a fire (felony) Loss Contingency, Number Of Felonies Counts Of Recklessly Causing A Fire Loss Contingency, Number Of Felonies Counts Of Recklessly Causing A Fire Debt Instrument [Axis] Debt Instrument [Axis] Wildfire-Related Class Action Wildfire-Related Class Action [Member] Wildfire-Related Class Action Noncurrent Liabilities Liabilities, Noncurrent [Abstract] WILDFIRE-RELATED CONTINGENCIES OTHER CONTINGENCIES AND COMMITMENTS Commitments and Contingencies Disclosure [Text Block] Regulatory account transfer Regulatory Account Transfer Pension benefits probably of recovery from customers in future rates and transferred to regulatory account Other tower, duration of contract Sale of Transmission Tower, Other Tower, Duration of Contract Sale of Transmission Tower, Other Tower, Duration of Contract Amortization of prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Schedule of Environmental Loss Contingencies by Site Schedule of Environmental Loss Contingencies by Site [Table Text Block] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Entity Interactive Data Current Entity Interactive Data Current Regulatory balancing accounts Revenue From Contract With Customer, Increase (Decrease) Regulatory Balancing Accounts Revenue From Contract With Customer, Increase (Decrease) Regulatory Balancing Accounts Number of misdemeanors (misdemeanor) Loss Contingency, Number Of Misdemeanors Loss Contingency, Number Of Misdemeanors Facility Availability Line of Credit Facility, Remaining Borrowing Capacity Number of operating segments Number of Operating Segments Number of parties filed petition for review of decision (party) Number of Parties Filed Petition For Review of Decision Number of Parties Filed Petition For Review of Decision Assumption, Period [Axis] Assumption, Period [Axis] Assumption, Period Number of lawsuits filed against company (lawsuit) Loss Contingency, Pending Claims, Number Pension and other post-retirement benefit plans obligations (net of taxes of $0, $0, $0, and $0, respectively) Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax Financial Instruments—Credit Losses Credit Loss, Financial Instrument [Policy Text Block] Contingencies and Commitments Commitments and Contingencies, Policy [Policy Text Block] Summary of Revenues Disaggregated by Type of Customer Disaggregation of Revenue [Table Text Block] Hinkley Natural Gas Compressor Station Hinkley Natural Gas Compressor Station [Member] Hinkley Natural Gas Compressor Station [Member] Fixed-income securities Fixed-income securities Other Fixed Income Securities [Member] Pass-through and asset-backed securities, municipal bonds and index futures Vegetation Management Support Costs (FHPMA) Vegetation Management Support Costs [Member] Vegetation Management Support Costs Regulatory assets Regulatory Assets, Current Non-GAAP core earnings requirement to pay common dividends Dividends, Non-GAAP Core Earnings Requirement Dividends, Non-GAAP Core Earnings Requirement Bad debt expense Accounts Receivable, Credit Loss Expense (Reversal) Schedule of Insurance Receivable Schedule of Insurance Receivable [Table Text Block] Schedule of Insurance Receivable Residential Residential [Member] Residential [Member] Long-term debt, gross Borrowings Outstanding Long-term Debt, Gross Fire Victim Trust Share Exchange and Tax Matters Agreement Fire Victim Trust Share Exchange and Tax Matters Agreement [Member] Fire Victim Trust Share Exchange and Tax Matters Agreement Disclosure Commitments And Contingencies Environmental Remediation Liability Composed [Abstract] Disclosure Commitments And Contingencies Environmental Remediation Liability Composed [Abstract] First preferred stock, cumulative, par value $25 per share, 4.36% series A redeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 4.36% Series A Redeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 4.36% Series A Redeemable [Member] Direct assignment, percentage Public Utilities, Direct Assignment, Percentage Public Utilities, Direct Assignment, Percentage Daniel Fire, 2020 Daniel Fire, 2020 [Member] Daniel Fire, 2020 TOTAL ASSETS Assets Assets, Fair Value Disclosure Regulatory balancing accounts Regulatory Balancing Accounts Liabilities Regulatory balancing accounts record the differences between revenues and costs that can be recovered through rates. Sales balancing accounts accumulate differences between revenues and authorized revenue requirements. Cost balancing accounts accumulate differences between incurred costs and authorized revenue requirements. Under-collections that are probable of recovery through regulated rates are recorded as regulatory balancing account assets. Over-collections that are probable of being credited to customers are recorded as regulatory balancing account liabilities. Other Other Operating Activities, Cash Flow Statement Document Transition Report Document Transition Report 12 year period Twelve Year Historical Period [Member] Twelve Year Historical Period TOTAL LIABILITIES AND EQUITY Liabilities and Equity Other, net Effective Income Tax Rate Reconciliation, Other Adjustments, Percent At The Market Equity Distribution Program At The Market Equity Distribution Program [Member] At The Market Equity Distribution Program Term Loan, October 2022 Term Loan, October 2022 [Member] Term Loan, October 2022 Number of criminal complaints (count) Loss Contingency, Number of Criminal Complaints Loss Contingency, Number of Criminal Complaints Restricted cash Restricted Cash Aggregate maximum amount of loans made by lenders Debt, Aggregate Maximum Amount Of Loans Made By Lenders Debt, Aggregate Maximum Amount Of Loans Made By Lenders Proceeds from issuance of long-term debt, net of discount and issuance costs of $47 and $178 at respective dates Proceeds from Issuance of Long-term Debt and Capital Securities, Net Number of guilty involuntary manslaughter pleas (count) Loss Contingency, Number of Guilty Involuntary Manslaughter Pleas Loss Contingency, Number of Guilty Involuntary Manslaughter Pleas Cash received (paid) for: Cash Paid [Abstract] Cash Paid Pension and other postretirement benefit plans obligations tax Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Environmental Remediation Site [Axis] Environmental Remediation Site [Axis] Derivative [Line Items] Derivative [Line Items] Property, Plant, and Equipment Property, Plant and Equipment, Net [Abstract] Reconciliation of PG&E Corporation's Income Available for Common Shareholders and Weighted Average Common Shares Outstanding for Calculating Diluted EPS Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table Text Block] On Or Before January 15, 2021 On Or Before January 15, 2021 [Member] On Or Before January 15, 2021 Regulatory Balancing Accounts [Axis] Regulatory Balancing Accounts [Axis] Information by type of regulatory balancing account First Mortgage Bonds, Exchange Stated Maturity 2023 First Mortgage Bonds, Exchange Stated Maturity 2023 [Member] First Mortgage Bonds, Exchange Stated Maturity 2023 EARNINGS PER SHARE Earnings Per Share [Text Block] Treasury stock acquired Treasury Stock, Value, Acquired, Cost Method Number of other buildings destroyed (structure) Loss Contingency, Number Of Other Buildings Destroyed Loss Contingency, Number Of Other Buildings Destroyed Cost of removal obligations Cost Of Removal Obligation [Member] Cost Of Removal Obligation [Member] Regulatory liabilities Regulatory Liabilities Minimum Minimum [Member] Additional insurance coverage, loss Loss Contingency, Additional Insurance Coverage, Loss Loss Contingency, Additional Insurance Coverage, Loss Reorganizations [Line Items] Reorganizations [Line Items] [Line Items] for Reorganizations [Table] Number of misdemeanors related to recklessly or negligently emitting air contaminants (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Recklessly Or Negligently Emitting Air Contaminants Loss Contingency, Number Of Misdemeanors Related To Recklessly Or Negligently Emitting Air Contaminants TOTAL LIABILITIES Liabilities Financial and Nonfinancial Liabilities, Fair Value Disclosure Debt issuance costs Debt Issuance Costs, Net Other Comprehensive Income Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract] Number of misdemeanors related to negligently causing a fire by device (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Negligently Causing A Fire By Device Loss Contingency, Number Of Misdemeanors Related To Negligently Causing A Fire By Device More than 10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Global equity securities Financial Instruments Equity Securities Fair Value Financial Instruments Equity Securities Fair Value Formula Rate [Domain] Formula Rate [Domain] Formula Rate [Domain] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Probable of recovery Probable recoveries Regulatory Asset, Probable of Recovery Regulatory Asset, Probable of Recovery Schedule of Activity for Debt and Equity Securities Summary Of Activity For Available For Sale Securities [Table Text Block] Schedule of activity for debt and equity securities Common stock issued, net Stock Issued During Period, Value, New Issues Settlement agreement, proposed payment to California General Fund Loss Contingency, Settlement Agreement, Proposed Payment To California General Fund Loss Contingency, Settlement Agreement, Proposed Payment To California General Fund Beginning asset (liability) balance Ending asset (liability) balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability) Value Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability) Value DEBT Debt Disclosure [Text Block] July 1, 2020 to July 1, 2021 Insurance Coverage, Period Two [Member] Insurance Coverage, Period Two Recovery Source [Axis] Recovery Source [Axis] Recovery Source Public Utility, Property, Plant and Equipment [Line Items] Public Utility, Property, Plant and Equipment [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] Cost recovery Gain Contingency, Cost Recovery Gain Contingency, Cost Recovery Common stock issued, net (in shares) Stock issued during period, shares, new issues (in shares) Stock Issued During Period, Shares, New Issues Letters of Credit Outstanding Letters of Credit Outstanding, Amount Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Inventories: Inventory, Net [Abstract] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Other Benefits Other Postretirement Benefits Plan [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax On Or Before January 15, 2022 On Or Before January 15, 2022 [Member] On Or Before January 15, 2022 Allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Current Reorganization items, net Total reorganization items, net Reorganization Items Recovery Source [Domain] Recovery Source [Domain] Recovery Source [Domain] Accrued Losses Loss Contingency Accrual, Provision Number of nuclear generating units (nuclear generating unit) Number Of Nuclear Generating Units Number Of Nuclear Generating Units Woody Fire, 2021 Woody Fire, 2021 [Member] Woody Fire, 2021 Proceeds from issuance of debt Proceeds from Issuance of Debt Nuclear Insurance Coverage [Axis] Nuclear Insurance Coverage [Axis] Nuclear insurance coverage axis. Common stock, shares outstanding, adjusted (in shares) Common Stock, Shares, Outstanding, Adjusted Common Stock, Shares, Outstanding, Adjusted Net realized and unrealized gains (losses): Net Realized and Unrealized Gains (Losses) [Abstract] Net Realized and Unrealized Gains (Losses) Document Period End Date Document Period End Date Aggregate transferred Fire Victim Trust, Aggregate Transferred Fire Victim Trust, Aggregate Transferred Entity Registrant Name Entity Registrant Name Treasury stock, shares at cost (in shares) Treasury Stock, Shares First Mortgage Bonds, Exchange Stated Maturity 2031 First Mortgage Bonds, Exchange Stated Maturity 2031 [Member] First Mortgage Bonds, Exchange Stated Maturity 2031 Number of public offerings of notes with complaints against underwriters (offering) Loss Contingency, Public Offerings Of Notes, Number, With Complaints Against Underwriters Loss Contingency, Public Offerings Of Notes, Number, With Complaints Against Underwriters Electric Electric Electricity Electricity [Member] Amount of environmental loss accrual expected to be recovered Recorded Third-Party Environmental Recoveries Receivable Financial Instrument [Axis] Financial Instrument [Axis] Investments, Owned, Federal Income Tax Note [Line Items] Investments, Owned, Federal Income Tax Note [Line Items] Price risk management instruments, gross subject to netting Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement Carrying Amount Reported Value Measurement [Member] Wildfire Fund asset Wildfire fund, current asset Litigation Asset, Current Litigation Asset, Current Operating Expenses Operating Costs and Expenses [Abstract] Reorganizations [Abstract] Reorganizations [Abstract] Common Stock Common Stock [Member] Interest income Investment Income, Interest First preferred stock, cumulative, par value $25 per share, 5% series A redeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 5% Series A Redeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 5% Series A Redeemable [Member] Proceeds from sale of transmission tower license Proceeds From Sale of Transmission Tower License Proceeds From Sale of Transmission Tower License Operating Income Decrease in net operating loss Operating Income (Loss) Litigation Settlement, Expense Litigation Settlement, Expense [Member] Litigation Settlement, Expense Electric Electric Property Plant And Equipment Property plant and equipment are reported at their original cost. These original costs include labor and materials, construction overhead, and allowance for funds used during construction ("AFUDC"). Amount does not include depreciation. Hines Atlas US LP Hines Atlas US LP [Member] Hines Atlas US LP Wildfire Fund asset Wildfire Fund Asset [Member] Wildfire Fund Asset Operating lease liabilities Operating Lease, Liability, Current Total Unrealized Losses Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax Equity units issued Temporary Equity, Stock Issued During Period, Value, New Issues Total other noncurrent assets Regulated Entity, Other Assets, Noncurrent Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value First preferred stock, cumulative, par value $25 per share, 5% redeemable First Preferred Stock, Cumulative, Par Value $25 Per Share, 5% Redeemable [Member] First Preferred Stock, Cumulative, Par Value $25 Per Share, 5% Redeemable [Member] Current assets – other Current Assets [Member] Current Assets [Member] Lease, option payment letter of credit Lease, Option Payment Letter Of Credit Lease, Option Payment Letter Of Credit Revenues From External Customers And Long Lived Assets [Table] Revenues From External Customers And Long Lived Assets [Table] Revenues From External Customers And Long Lived Assets [Table] Treasury Stock Treasury Stock [Member] Loss Contingency Nature, Period [Axis] Loss Contingency Nature, Period [Axis] Loss Contingency Nature, Period Schedule Of Changes In Equity [Line Items] Schedule Of Changes In Equity [Line Items] [Line Items] for Schedule Of Changes In Equity [Table] Legal fees Legal Fees Common stock issued in satisfaction of liabilities Stock Issued Capital expenditures Payments to Acquire Property, Plant, and Equipment Other Other Liabilities, Current Valuation Approach and Technique [Axis] Valuation Approach and Technique [Axis] Preferred stock dividend requirement of subsidiary Preferred Stock Dividends, Income Statement Impact Schedule Of Changes In Equity [Table] Schedule Of Changes In Equity [Table] Schedule Of Changes In Equity [Table] Intercompany Loan Intercompany Loan [Member] Intercompany Loan First Mortgage Bonds, Exchange Stated Maturity 2028 First Mortgage Bonds, Exchange Stated Maturity 2028 [Member] First Mortgage Bonds, Exchange Stated Maturity 2028 Gas distribution and transmission Gas Fixed Cost [Member] The gas fixed cost balancing account is used to track the recovery of CPUC-authorized gas distribution revenue requirements and certain other gas distribution-related costs. Entity Information [Line Items] Entity Information [Line Items] Expenses and capital expenditures, disallowed capital, approved Loss Contingency, Expenses and Capital Expenditures, Disallowed Capital, Approved Loss Contingency, Expenses and Capital Expenditures, Disallowed Capital, Approved Schedule of Regulatory Liabilities [Table] Schedule of Regulatory Liabilities [Table] Subrogation Wildfire Trust and Fire Victim Trust Subrogation Wildfire Trust and Fire Victim Trust [Member] Subrogation Wildfire Trust and Fire Victim Trust Term Loan Credit Facility Term Loan Credit Facility [Member] Term Loan Credit Facility Gross realized losses on securities Debt Securities, Available-for-sale, Realized Loss Variable Interest Entities Consolidation, Variable Interest Entity, Policy [Policy Text Block] Retirement Plan Type [Axis] Retirement Plan Type [Axis] Approved depreciation rate Public Utilities, Approved Rate, Depreciation, Percentage Public Utilities, Approved Rate, Depreciation, Percentage Costs for insurance coverage General Insurance Expense Balance Sheet Location [Axis] Balance Sheet Location [Axis] Additional amortization period Loss Contingency, Additional Amortization Period Loss Contingency, Additional Amortization Period Property damage and business interruption coverage, nuclear incident Insurance Coverage For Property Damage And Business Interruption Coverage, Nuclear Incident [Member] Insurance Coverage For Property Damage And Business Interruption Coverage, Nuclear Incident Number of parties filed separate applications for rehearing (party) Number of Parties Filed Separate Applications For Rehearing Number of Parties Filed Separate Applications For Rehearing Interest expense Interest Expense Cash Plan of Reorganization, Proposed Plan, Cash Plan of Reorganization, Proposed Plan, Cash Non-current allowance for doubtful accounts Accounts Receivable, Allowance for Credit Loss, Noncurrent Recoveries in excess of AROs Recoveries In Excess Of Aro [Member] Cumulative differences between ARO expenses and amounts collected in rates primarily for the decommissioning of the nuclear generation facilities Number of customers without power (customer) Number Of Customers Without Power Number Of Customers Without Power Pacific Gas & Electric Co (Utility) Utility Pacific Gas & Electric Co [Member] Pacific Gas & Electric Co [Member] Accrued legal liabilities Accrued Legal Liabilities Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to claims and litigation, regulatory proceedings, penalties and other legal matters. Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Number of misdemeanors related to negligently causing a fire (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Negligently Causing A Fire Loss Contingency, Number Of Misdemeanors Related To Negligently Causing A Fire Federal Energy Regulatory Commission (FERC) Federal Energy Regulatory Commission [Member] Federal Energy Regulatory Commission City Area Code City Area Code Insurance Receivable [Roll Forward] Insurance Receivable [Roll Forward] Insurance Receivable Reinvested earnings Retained Earnings (Accumulated Deficit) Litigation Case [Domain] Litigation Case [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Amendment Flag Amendment Flag Fair Value Estimate of Fair Value Measurement [Member] Contract Volume (mmbtu and mwh) Derivative, Number of Instruments Held Common stock equity infusion from PG&E Corporation used to satisfy liabilities Stock Issued From Parent To Satisfy Liabilities Stock Issued From Parent To Satisfy Liabilities FERC FERC [Member] FERC Level 3 Reconciliation Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] Repayments under credit facilities Repayments of Lines of Credit COVID-19 pandemic protection memorandum account, program and accounts receivable financing costs COVID-19 Pandemic Protection Memorandum Account, Program and Accounts Receivable Financing Costs [Member] COVID-19 Pandemic Protection Memorandum Account, Program and Accounts Receivable Financing Costs Noncurrent assets – other Other Noncurrent Assets [Member] Fire fighting costs recovery requested Loss Contingency, Fire Suppression And Other Costs Recovery Requested By Cal Fire Number of count related to unlawfully causing a fire (count) Loss Contingency, Number of Count Related To Unlawfully Causing a Fire Loss Contingency, Number of Count Related To Unlawfully Causing a Fire California Public Utilities Commission (CPUC) California Public Utilities Commission [Member] California Public Utilities Commission Claims expected to be received Claim Settlements Receivable Claim Settlements Receivable Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Expected wildfire fund allocation metric, annual contributions Loss Contingency, Expected Wildfire Fund Allocation Metric, Annual Contributions Loss Contingency, Expected Wildfire Fund Allocation Metric, Annual Contributions Shareholder-funded system enhancement initiatives, approved Loss Contingency, Shareholder-funded System Enhancement Initiatives, Approved Loss Contingency, Shareholder-funded System Enhancement Initiatives, Approved Equity Components [Axis] Equity Components [Axis] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Letter of credit sublimit Debt, Letter of Credit Sublimit Debt, Letter of Credit Sublimit Sale of Stock [Domain] Sale of Stock [Domain] Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Gas stored underground and fuel oil Inventory, Net Long-Term Regulatory Assets Schedule Of Long Term Regulatory Assets [Table Text Block] Schedule Of Long Term Regulatory Assets Entity File Number Entity File Number Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Initial safety certification, documentation provided, period Loss Contingency, Initial Safety Certification, Documentation Provided, Period Loss Contingency, Initial Safety Certification, Documentation Provided, Period Deferred tax assets charge Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Capital Expenses and capital expenditures, capital expenditures Loss Contingency, Expenses and Capital Expenditures, Capital Expenditures Loss Contingency, Expenses and Capital Expenditures, Capital Expenditures Product and Service [Axis] Product and Service [Axis] COVID-19 pandemic protection memorandum account, undercollection bad debt COVID-19 Pandemic Protection Memorandum Account, Undercollection Bad Debt [Member] COVID-19 Pandemic Protection Memorandum Account, Undercollection Bad Debt Satisfaction of HoldCo Rescission or Damage Claims and Subordinated Debt Satisfaction of HoldCo Rescission or Damage Claims and Subordinated Debt Claims [Member] Satisfaction of HoldCo Rescission or Damage Claims and Subordinated Debt Claims Statement [Line Items] Statement [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Common stock transferred Fire Victim Trust, Common Stock Transferred Fire Victim Trust, Common Stock Transferred Settlement reached Litigation Settlement, Amount Awarded to Other Party Electric distribution Distribution Revenue Adjustment Mechanism [Member] The distribution revenue adjustment mechanism balancing account is used to record and recover the authorized electric distribution revenue requirements and certain other electric distribution-related authorized costs. Property damage and business interruption coverage Insurance Coverage For Property Damage And Business Interruption Coverage [Member] Insurance Coverage For Property Damage And Business Interruption Coverage Retirement Plan Type [Domain] Retirement Plan Type [Domain] Total Fair Value Total fair value Debt Securities, Available-for-sale Type Insurance Coverage [Domain] Type Insurance Coverage [Domain] Type of Insurance Coverage Domain Agricultural Agricultural [Member] Agricultural [Member] Hinkley, California Hinkley, California [Member] Hinkley, California 2018 Camp Fire CEMA Expense (CEMA) 2018 Camp Fire CEMA Expense [Member] 2018 Camp Fire CEMA Expense Debt Disclosure [Abstract] Debt Disclosure [Abstract] 2015 through 2021 Loss Contingency Nature, Period Two [Member] Loss Contingency Nature, Period Two Entity Address, State or Province Entity Address, State or Province Fixed-income securities Corporate Debt Securities Fair Value Represents the fair value of trust assets held in corporate securities Proceeds from sale of transmission tower license, final purchase price Proceeds From Sale of Transmission Tower License, Gross Proceeds From Sale of Transmission Tower License, Gross Entity [Domain] Entity [Domain] Property damage and business interruption coverage, non-nuclear incident Insurance Coverage For Property Damage And Business Interruption Coverage, Non-nuclear Incident [Member] Insurance Coverage For Property Damage And Business Interruption Coverage, Non-nuclear Incident Industrial Industrial [Member] Industrial [Member] Other comprehensive income (loss) Other Comprehensive Income (Loss), Net Of Tax, Portion Attributable To Parent, Including Stranded Tax Amount Other Comprehensive Income (Loss), Net Of Tax, Portion Attributable To Parent, Including Stranded Tax Amount Customer [Axis] Customer [Axis] Extension to April 1, 2022 Insurance Coverage, Period Six [Member] Insurance Coverage, Period Six Entity Shell Company Entity Shell Company Asset Class [Axis] Asset Class [Axis] Local Phone Number Local Phone Number General rate case memorandum accounts General Rate Case Memorandum Accounts [Member] General Rate Case Memorandum Accounts Amount attributable to tax Other Comprehensive Income (Loss), Tax Wildfire Fund expense Estimated Litigation Liability, Expense Estimated Litigation Liability, Expense TOTAL ASSETS Assets Historical data period Assumption, Historical Data Period Assumption, Historical Data Period Permanently disallowed capital Loss Contingency, Permanently Disallowed Capital Loss Contingency, Permanently Disallowed Capital Interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Geographical [Domain] Geographical [Domain] Disallowance cap, transmission and distribution equity rate base Loss Contingency, Disallowance Cap, Transmission And Distribution Equity Rate Base Loss Contingency, Disallowance Cap, Transmission And Distribution Equity Rate Base Capital expenditures for future recovery, pending authorization Loss Contingency, Capital Expenditures For Future Recovery, Pending Authorization Loss Contingency, Capital Expenditures For Future Recovery, Pending Authorization Number of residential structures damaged (structure) Loss Contingency, Number Of Residential Structures Damaged Loss Contingency, Number Of Residential Structures Damaged PG&E Corporation Parent Company [Member] Reimbursements Insurance Settlements Receivable, Reimbursements Insurance Settlements Receivable, Reimbursements Non- controlling Interest - Preferred Stock of Subsidiary Noncontrolling Interest [Member] Derivative Contract [Domain] Derivative Contract [Domain] Environmental Remediation Liability Environmental Remediation Liability Utility records an environmental remediation liability when site assessments indicate that remediation is probable and the Utility can reasonably estimate the loss or a range of probable amounts. The Utility records an environmental remediation liability based on the lower end of the range of estimated probable costs, unless an amount within the range is a better estimate than any other amount Total noncurrent liabilities Liabilities, Noncurrent Schedule of Line of Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Credit facilities financing fees Payment For Credit Facility Financing Fees Payment For Credit Facility Financing Fees SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Significant Accounting Policies [Text Block] Complaints Brought By Butte County District Attorney Complaints Brought By Butte County District Attorney [Member] Complaints Brought By Butte County District Attorney [Member] Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Short-term borrowings Short-term Debt Litigation Status [Axis] Litigation Status [Axis] Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Entity Tax Identification Number Entity Tax Identification Number Commercial Commercial [Member] Commercial [Member] Receivables Securitization Program Receivables Securitization Program [Member] Receivables Securitization Program Net Income (Loss) Per Common Share, Diluted (in dollars per share) Total income (loss) per common share, diluted (in dollars per share) Earnings Per Share, Diluted Weighted Average Common Shares Outstanding, Basic (in shares) Weighted average common shares outstanding, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Add incremental shares from assumed conversions: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Service cost for benefits earned Defined Benefit Plan, Service Cost Entity Listings, Exchange [Axis] Entity Listings, Exchange [Axis] Income taxes, net Income Taxes Paid, Net Net cash proceeds Proceeds From Sale Of Building, Net Proceeds From Sale Of Building, Net Wildfire expense memorandum account Wildfire Expense Memorandum Account [Member] Wildfire Expense Memorandum Account [Member] Greater effectiveness, amortization period Assumption, Greater Effectiveness, Amortization Period Assumption, Greater Effectiveness, Amortization Period Regulatory Liability [Domain] Regulatory Liability [Domain] Price Risk Management Instruments Price Risk Management Instruments [Member] Level 3 price risk management instruments Fire hazard prevention memorandum account Fire Hazard Prevention Memorandum Account [Member] Fire Hazard Prevention Memorandum Account [Member] Amortization of net actuarial loss Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] Deferred income taxes Deferred Income Tax Liabilities, Net Cash contribution by company Plan of Reorganization, Proposed Plan, Cash Contribution By Company Plan of Reorganization, Proposed Plan, Cash Contribution By Company Noncurrent liabilities – other Other Noncurrent Liabilities [Member] Schedule of Effective Income Tax Rate Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Expected capitalization, proceeds of bond Loss Contingency, Expected Capitalization, Proceeds of Bond Loss Contingency, Expected Capitalization, Proceeds of Bond Variable Interest Entity Variable Interest Entity, Primary Beneficiary [Member] Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost, Excluding Regulatory Account Transfers Defined Benefit Plan, Net Periodic Benefit Cost, Excluding Regulatory Account Transfers Total Shareholders’ Equity Parent [Member] Number of residences destroyed (residence) Loss Contingency, Number Of Residences Destroyed Loss Contingency, Number Of Residences Destroyed Loss Contingency Nature, Period [Domain] Loss Contingency Nature, Period [Domain] Loss Contingency Nature, Period [Domain] Assets and Liabilities Measured at Fair Value on a Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Expenses and capital expenditures Total Loss Contingency, Expenses and Capital Expenditures Loss Contingency, Expenses and Capital Expenditures Inventories Increase (Decrease) in Inventories Common stock, shares outstanding (in shares) Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Outstanding Unfavorable Regulatory Action Unfavorable Regulatory Action [Member] Financial Instruments [Domain] Financial Instruments [Domain] 5–10 years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Materials and supplies Inventory, Raw Materials and Supplies, Gross Regulatory Asset [Domain] Regulatory Asset [Domain] Cost of goods Cost of Goods and Services Sold Rabbi trusts Rabbi Trusts [Member] Trust which supports the non-qualified benefit obligations of employers to their employees Debt instrument, extension option, term Debt Instrument, Extension Option, Term Debt Instrument, Extension Option, Term Catastrophic Event, Period [Domain] Catastrophic Event, Period [Domain] Catastrophic Event, Period [Domain] Accounts receivable: Accounts Receivable, after Allowance for Credit Loss, Current [Abstract] Schedule of Loss Contingencies by Contingency Schedule of Loss Contingencies by Contingency [Table Text Block] De-energization Class Action De-energization Class Action [Member] De-energization Class Action Term Loan, January 2022 Term Loan, January 2022 [Member] Term Loan, January 2022 Number of other structures damaged (structure) Loss Contingency, Number Other Structures Damaged Loss Contingency, Number Other Structures Damaged Equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Fine payable to general fund, suspended Fine Payable To General Fund, Suspended Fine Payable To General Fund, Suspended Loss Contingencies [Line Items] Loss Contingencies [Line Items] Other Other Liabilities, Noncurrent Derivative Asset, Netting Derivative Asset, Fair Value, Gross Liability Treasury stock acquired (in shares) Treasury Stock, Shares, Acquired Debt Instrument [Line Items] Debt Instrument [Line Items] Price risk management instruments, assets Derivative Asset Total regulatory balancing accounts, net Regulatory balancing account Total Current Regulatory Balancing Accounts The Utility's current regulatory balancing accounts represent the amounts expected to be received from or refunded to the Utility's customers through authorized rate adjustments within the next 12 months. Number of electric transmission towers Sale of Transmission Tower, Number of Electric Transmission Towers Sale of Transmission Tower, Number of Electric Transmission Towers Document Quarterly Report Document Quarterly Report Payment Period [Domain] Payment Period [Domain] Payment Period Regulatory account transfer Accumulated Defined Benefit Plans Adjustment, Net Transition Including Portion Attributable to Noncontrolling Interest [Member] Derivative Liability, Netting Derivative Liability, Fair Value, Gross Asset Operating and maintenance Utilities Operating Expense, Maintenance and Operations Current liabilities - other Other Current Liabilities [Member] Location Site [Axis] Location Site [Axis] Location Site Public street and highway lighting Public Street And Highway Lighting [Member] Public Street And Highway Lighting [Member] April 13, 2021 to April 1, 2022 Insurance Coverage, Period One [Member] Insurance Coverage, Period One Interim revenue requirement Loss Contingency, Cost Recovery, Revenue Requirement Loss Contingency, Cost Recovery, Revenue Requirement Long-term debt (includes $1.0 billion related to VIEs at respective dates) Long-term debt Long-term Debt, Excluding Current Maturities Liabilities: Liabilities, Fair Value Disclosure [Abstract] Term Loan, January And October 2022 Term Loan, January And October 2022 [Member] Term Loan, January And October 2022 Other Accounts Payable, Other, Current Unusual or Infrequent Item, or Both [Axis] Unusual or Infrequent Item, or Both [Axis] Derivatives And Hedging Activities [Line Items] Derivatives And Hedging Activities [Line Items] "Disclosure of information about derivatives and hedging activities. Power purchase agreements Power Purchase Agreements [Member] Third-party power purchase agreements for electricity to meet customer needs Cash, cash equivalents, and restricted cash at January 1 Cash, cash equivalents, and restricted cash at September 30 Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Forwards, Futures and Swaps Forwards Futures Swaps [Member] Forwards Futures Swaps [Member] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] Amount of property damage coverage provided by NEIL Property Damage Coverage Per Incident Property damage coverage per nuclear incident provided by nuclear insurance Current Assets Assets, Current [Abstract] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Other Proceeds from (Payments for) Other Financing Activities Equity Units (in shares) Incremental Common Shares Attributable to Equity Units Incremental Common Shares Attributable to Equity Units Capital expenditures for future recovery, seeking recovery Loss Contingency, Capital Expenditures For Future Recovery, Seeking Recovery Loss Contingency, Capital Expenditures For Future Recovery, Seeking Recovery Entity Central Index Key Entity Central Index Key Security Exchange Name Security Exchange Name Short-term investments Cash and Cash Equivalents, Fair Value Disclosure Insurance settlements receivable Insurance Receivable, beginning balance Insurance Receivable, ending balance Insurance Settlements Receivable Location Site [Domain] Location Site [Domain] Location Site [Domain] Purchases of nuclear decommissioning trust investments Payments to Acquire Investments to be Held in Decommissioning Trust Fund Net current period other comprehensive gain (loss) Other Comprehensive Income (Loss), Net of Tax Reorganizations [Table] Reorganizations [Table] Reorganizations [Table] Interest payable Interest Payable, Current Number of omnibus objection (objection) Loss Contingency, Number of Omnibus Objection Loss Contingency, Number of Omnibus Objection Current Fiscal Year End Date Current Fiscal Year End Date EQUITY Stockholders' Equity Note Disclosure [Text Block] Measurement Basis [Axis] Measurement Basis [Axis] Current regulatory liabilities expected to be refunded Regulatory Liability, Current, Expected To Be Refunded Regulatory Liability, Current, Expected To Be Refunded Other noncurrent assets and liabilities Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net Valuation Techniques Fair Value of Financial Instruments, Policy [Policy Text Block] Number of misdemeanors related to carelessly or negligently throwing or placing substances that may cause a fire (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Carelessly Or Negligently Throwing Or Placing Substances That May Cause A Fire Loss Contingency, Number Of Misdemeanors Related To Carelessly Or Negligently Throwing Or Placing Substances That May Cause A Fire Humboldt Bay Unit 3 Humboldt Bay Unit 3 [Member] Humboldt Bay Unit 3 Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Revenue from contracts with customers Disaggregation of Revenue [Abstract] Effect of changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] REGULATORY ASSETS, LIABILITIES, AND BALANCING ACCOUNTS Regulatory Assets Liabilities And Balancing Accounts [Text Block] Regulatory assets, liabilities and balancing accounts Purchase options, land, value Purchase Options, Land Number of misdemeanors related to failure to maintain firebreak (misdemeanor) Loss Contingency, Number Of Misdemeanors Related To Failure To Maintain Firebreak Loss Contingency, Number Of Misdemeanors Related To Failure To Maintain Firebreak Class of Stock [Domain] Class of Stock [Domain] Congestion revenue rights Congestion Revenue Rights [Member] Represents the fair value of congestion revenue rights' assets or liabilities. Congestion revenue is allocated to holders of congestion revenue rights by assessing congestion charges when transmission constraints occur on the California electric transmission grid. Facility Limit Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Insurance coverage, loss Loss Contingency, Insurance Coverage, Loss Loss Contingency, Insurance Coverage, Loss Natural gas compressor station Natural Gas Compressor Station Natural Gas Compressor Station Transfer of shares to Fire Victim Trust (in shares) Sale of Stock, Transfer of Shares Related To Litigation Settlement Sale of Stock, Transfer of Shares Related To Litigation Settlement Fossil fuel-fired generation facilities and sites Fossil Fuel Fired Generation Facilities Formerly Owned By Utility Fossil Fuel-Fired Generation Facilities Formerly Owned By Utility Litigation payment Payments for Legal Settlements Zogg Fire, 2020 and Dixie Fire, 2021 Zogg Fire, 2020 and Dixie Fire, 2021 [Member] Zogg Fire, 2020 and Dixie Fire, 2021 Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Other Other Assets, Current Insurance Coverage, Period [Axis] Insurance Coverage, Period [Axis] Insurance Coverage, Period Schedule of Offsetting Liabilities Offsetting Liabilities [Table Text Block] Deferred income taxes Deferred Income Tax Charge [Member] Gross Derivative Liabilities Derivative Liability, Fair Value, Gross Liability Payment Period [Axis] Payment Period [Axis] Payment Period Unobservable input (dollars per mwh) Fair Value Measurement Unobservable Input Range Fair value measurement unobservable input range. Preferred Stock Preferred Stock [Member] Recorded unconditional purchase obligation Recorded Unconditional Purchase Obligation Level 3 Measurements and Sensitivity Analysis Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Regulatory balancing accounts Regulatory Balancing Accounts Assets Regulatory balancing accounts are used to accumulate differences between revenues and authorized revenue requirements and to accumulate differences between incurred costs and costs recovered. Regulatory balancing accounts receivable represents under-collections that are probably of recovery through regulated rates and are expected to be recovered within the next 12 months. Construction work in progress Construction in Progress, Gross Pension Benefits Pension Plan [Member] Number of petitions for review to be consolidated (petition) Loss Contingency, Number of Petitions For Review To be Consolidated Loss Contingency, Number of Petitions For Review To be Consolidated Less than 1 year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Regulated Operations [Abstract] Regulated Operations [Abstract] Common stock issued, net of issuance costs Proceeds from Common Stock Issued Proceeds from Common Stock Issued Fossil Fuel Fired Generation Fossil Fuel Fired Generation [Member] Fossil Fuel Fired Generation [Member] Revised cost recovery, increase to revenue requirement Loss Contingency, Revised Cost Recovery, Increase To Revenue Requirement Loss Contingency, Revised Cost Recovery, Increase To Revenue Requirement Reduction to property plant and equipment Property, Plant and Equipment, Gross, Period Increase (Decrease) Carrying Amount and Fair Value of Financial Instruments Schedule Of Carrying Amount And Fair Value Of Financial Instruments [Table Text Block] Carrying amount and fair value of financial instruments Text Block