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INCOME TAXES (Tables)
 12 Months Ended
Dec. 31, 2022
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) The significant components of income tax provision (benefit) by taxing jurisdiction were as follows:
 PG&E CorporationUtility
 
Year Ended December 31,
(in millions)202220212020202220212020
Current:      
Federal$(1)$— $(26)$(1)$— $(26)
State— 1 (34)— — (34)
Deferred:
Federal(943)543 258 (852)588 290 
State(389)296 171 (348)316 185 
Tax credits(5)(4)(7)(5)(4)(7)
Income tax provision (benefit)
$(1,338)$836 $362 $(1,206)$900 $408 
Schedule of Deferred Tax Assets and Liabilities
The following tables describe net deferred income tax assets and liabilities:
 PG&E CorporationUtility
 
Year Ended December 31,
(in millions)2022202120222021
Deferred income tax assets:    
Tax carryforwards$7,156 $5,628 $6,868 $5,425 
Compensation157 185 80 108 
Greenhouse gas allowance239 157 239 157 
Wildfire-related claims (1)
1,489 1,723 1,489 1,723 
Operating lease liability
368 346 368 346 
Transmission tower wireless licenses254 266 254 266 
Other (2)
197 121 177 136 
Total deferred income tax assets$9,860 $8,426 $9,475 $8,161 
Deferred income tax liabilities:    
Property related basis differences9,374 8,847 9,363 8,835 
Regulatory balancing accounts1,376 1,193 1,376 1,193 
Debt financing costs465 501 465 501 
Operating lease right of use asset368 346 368 346 
Income tax regulatory asset (3)
764 517 764 517 
Other (4)
245 199 230 178 
Total deferred income tax liabilities$12,592 $11,603 $12,566 $11,570 
Total net deferred income tax liabilities$2,732 $3,177 $3,091 $3,409 
(1) Amounts primarily relate to wildfire-related claims, net of estimated insurance recoveries, and legal and other costs related to various wildfires that have occurred in PG&E Corporation’s and the Utility’s service area over the past several years.
(2) Amounts include benefits, state taxes, and customer advances for construction. 
(3) Represents the tax gross up portion of the deferred income tax for the cumulative differences between amounts recognized for ratemaking purposes and amounts recognized for tax, including the impact of changes in net deferred taxes associated with a lower federal income tax rate as a result of the Tax Act.
(4) Amount primarily includes an environmental reserve.
Schedule of Effective Income Tax Rate Reconciliation
The following table reconciles income tax expense at the federal statutory rate to the income tax provision:
 PG&E CorporationUtility
 Year Ended December 31,
 202220212020202220212020
Federal statutory income tax rate21.0 %21.0 %21.0 %21.0 %21.0 %21.0 %
Increase (decrease) in income tax rate resulting from:
State income tax (net of federal benefit) (1)
(75.8)31.3 (15.3)(26.9)24.1 19.1 
Effect of regulatory treatment of fixed asset differences (2)
(123.8)(71.5)39.0 (49.2)(51.6)(44.9)
Tax credits(3.2)(1.7)1.5 (1.3)(1.2)(1.7)
Fire Victim Trust (3)
(160.9)127.3 (44.9)(64.0)91.9 51.7 
Bankruptcy and emergence— — (37.6)— — 2.4 
   Other, net (4)
12.9 5.3 (2.1)2.2 2.6 2.2 
Effective tax rate(329.8)%111.7 %(38.4)%(118.2)%86.8 %49.8 %
(1) Includes the effect of state flow-through ratemaking treatment.
(2) Includes the effect of federal flow-through ratemaking treatment for certain property-related costs.  For these temporary tax differences, PG&E Corporation and the Utility recognize the deferred tax impact in the current period and record offsetting regulatory assets and liabilities.  Therefore, PG&E Corporation’s and the Utility’s effective tax rates are impacted as these differences arise and reverse.  PG&E Corporation and the Utility recognize such differences as regulatory assets or liabilities as it is probable that these amounts will be recovered from or returned to customers in future rates.  In 2022, 2021, and 2020, the amounts also reflect the impact of the amortization of excess deferred tax benefits to be refunded to customers as a result of the Tax Act passed in December 2017.
(3) The Utility includes an adjustment for the tax benefit of the sale of shares by the Fire Victim Trust in 2022, a DTA write-off associated with the grantor trust election for the Fire Victim Trust in 2021 and an adjustment for the DTA write-off for difference between the liability recorded related to the Restructuring Support Agreement dated December 6, 2019 with the Official Committee of Tort Claimants and attorneys and other advisors and agents for certain holders of Fire Victim Claims (as defined therein), as amended and the ultimate value of PG&E Corporation stock contributed to the Fire Victim Trust in 2020. PG&E Corporation includes the same adjustment as the Utility in these years as well as a permanent non-deductible equity backstop premium expense in 2020.
(4) These amounts primarily represent the impact of tax audit settlements and non-tax deductible penalty costs.
Schedule of Change in Unrecognized Tax Benefits The following table reconciles the changes in unrecognized tax benefits:
 PG&E CorporationUtility
(in millions)202220212020202220212020
Balance at beginning of year$498 $437 $420 $498 $437 $420 
Reductions for tax position taken during a prior year(1)(23)(43)(1)(23)(43)
Additions for tax position taken during the current year73 85 60 73 85 60 
Settlements— (1)— — (1)— 
Balance at end of year
$570 $498 $437 $570 $498 $437 
Schedule of Operating Loss and Tax Credit Carryforward Balances The following table describes PG&E Corporation’s operating loss and tax credit carryforward balances:
(in millions)December 31, 2022Expiration
Year
Federal:  
Net operating loss carryforward - Pre-2018$3,447 2031 - 2036
Net operating loss carryforward - Post-201723,170 N/A
Tax credit carryforward152 2029 - 2041
State:
Net operating loss carryforward$25,169 2039 - 2041
Tax credit carryforward126 Various