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INCOME TAXES (Tables)
 12 Months Ended
Dec. 31, 2023
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)202320222021202320222021
Current:      
Federal$(1)$(1)$— $(1)$(1)$— 
State— — 1 — — — 
Deferred:
Federal(1,047)(943)543 (981)(852)588 
State(507)(389)296 (477)(348)316 
Tax credits(2)(5)(4)(2)(5)(4)
Income tax provision (benefit)
$(1,557)$(1,338)$836 $(1,461)$(1,206)$900 
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)2023202220232022
Deferred income tax assets:    
Tax carryforwards$9,132 $7,156 $8,740 $6,868 
Compensation145 157 82 80 
GHG allowance361 239 361 239 
Wildfire-related claims (1)
1,069 1,489 1,069 1,489 
Operating lease liability
142 368 142 368 
Transmission tower wireless licenses250 254 250 254 
Bad debt134 55 134 55 
Other (2)
130 142 109 122 
Total deferred income tax assets$11,363 $9,860 $10,887 $9,475 
Deferred income tax liabilities:    
Property-related basis differences10,058 9,374 10,047 9,363 
Regulatory balancing accounts1,433 1,376 1,433 1,376 
Debt financing costs428 465 428 465 
Operating lease ROU asset142 368 142 368 
Income tax regulatory asset (3)
991 764 991 764 
Environmental reserve200 163 200 163 
Other (4)
91 82 82 67 
Total deferred income tax liabilities$13,343 $12,592 $13,323 $12,566 
Total net deferred income tax liabilities$1,980 $2,732 $2,436 $3,091 
(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 TCJA.
(4) Amounts primarily include property taxes and prepaid expense.
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,
 202320222021202320222021
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)
(57.9)(75.8)31.3 (34.4)(26.9)24.1 
Effect of regulatory treatment of fixed asset differences (2)
(63.4)(123.8)(71.5)(40.1)(49.2)(51.6)
Tax credits(2.2)(3.2)(1.7)(2.2)(1.3)(1.2)
Fire Victim Trust (3)
(126.9)(160.9)127.3 (80.2)(64.0)91.9 
   Other, net (4)
2.2 12.9 5.3 1.1 2.2 2.6 
Effective tax rate(227.2)%(329.8)%111.7 %(134.8)%(118.2)%86.8 %
(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 2023, 2022, and 2021, the amounts also reflect the impact of the amortization of excess deferred tax benefits to be refunded to customers as a result of the TCJA passed in December 2017.
(3) Includes an adjustment for the tax benefit of the sale of shares by the Fire Victim Trust in 2023 and 2022 and a DTA write-off associated with the grantor trust election for the Fire Victim Trust in 2021.
(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)202320222021202320222021
Balance at beginning of year$570 $498 $437 $570 $498 $437 
Additions for tax position taken during a prior year1 — — 1 — — 
Reductions for tax position taken during a prior year— (1)(23)— (1)(23)
Additions for tax position taken during the current year45 73 85 45 73 85 
Settlements— — (1)— — (1)
Balance at end of year
$616 $570 $498 $616 $570 $498 
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, 2023Expiration
Year
Federal:  
Net operating loss carryforward - Pre-2018$3,447 2031 - 2036
Net operating loss carryforward - Post-201729,403 N/A
Tax credit carryforward175 2029 - 2041
State:
Net operating loss carryforward$32,583 2039 - 2041
Tax credit carryforward137 Various