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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2023
Accounting Policies [Abstract]  
Summary of Revenues Disaggregated by Type of Customer
The following table presents the Utility’s revenues disaggregated by type of customer:
Year Ended December 31,
(in millions)202320222021
Electric
Revenue from contracts with customers
   Residential$6,041 $6,130 $6,089 
   Commercial5,643 5,416 5,042 
   Industrial1,784 1,626 1,493 
   Agricultural1,413 1,830 1,565 
   Public street and highway lighting83 77 73 
   Other, net (1)
136 (247)(84)
      Total revenue from contracts with customers - electric15,100 14,832 14,178 
Regulatory balancing accounts (2)
2,324 228 953 
Total electric operating revenue$17,424 $15,060 $15,131 
Natural gas
Revenue from contracts with customers
   Residential$3,686 $3,353 $2,759 
   Commercial1,052 1,005 713 
   Transportation service only1,603 1,534 1,346 
   Other, net (1)
(145)163 140 
      Total revenue from contracts with customers - gas6,196 6,055 4,958 
Regulatory balancing accounts (2)
808 565 553 
Total natural gas operating revenue7,004 6,620 5,511 
Total operating revenues$24,428 $21,680 $20,642 
(1) This activity is primarily related to the change in unbilled revenue and amounts subject to refund, partially offset by other miscellaneous revenue items.
(2) These amounts represent revenues authorized to be billed or refunded to customers.
Schedule of Estimated Useful Lives and Balances of Utility's Property, Plant and Equipment The Utility’s estimated service lives of its property, plant, and equipment were as follows:
 Estimated ServiceBalance at December 31,
(in millions, except estimated service lives)Lives (years)20232022
Electricity generating facilities (1)
3 to 75
$11,423 $11,781 
Electricity distribution facilities
10 to 70
45,205 41,061 
Electricity transmission facilities
15 to 75
17,562 16,413 
Natural gas distribution facilities
20 to 60
16,324 15,366 
Natural gas transmission and storage facilities
5 to 70
10,496 9,859 
General plant and other
5 to 50
9,165 8,518 
Financing lease787 18 
Construction work in progress4,452 4,137 
Total property, plant, and equipment115,414 107,153 
Accumulated depreciation(33,093)(30,946)
Net property, plant, and equipment (2)
$82,321 $76,207 
(1) Balance includes nuclear fuel inventories. Nuclear generating facilities have been authorized by the CPUC to be fully depreciated by December 31, 2025. Stored nuclear fuel inventory is stated at weighted-average cost. Nuclear fuel in the reactor is expensed as it is used based on the amount of energy output. See Note 15 below.
(2) Includes $1.7 billion of fire risk mitigation-related property, plant, and equipment securitized in accordance with AB 1054.
Changes In Asset Retirement Obligations
The following table summarizes the changes in ARO liability during 2023 and 2022, including nuclear decommissioning obligations:
(in millions)20232022
ARO liability at beginning of year$5,912 $5,298 
Liabilities incurred— 134 
Revision in estimated cash flows(585)325 
Accretion253 213 
Liabilities settled(68)(58)
ARO liability at end of year$5,512 $5,912 
Schedule Of Government Assistance
The following table provides a summary of where the DWR loan activity is presented in PG&E Corporation’s and the Utility’s Consolidated Financial Statements:
(in millions)
20232022
Long-term debt:
DWR Loan Outstanding at January 1
$312 $— 
Proceeds received (1)
— 350 
Operating Expenses:
Operating and maintenance expense - Performance-based disbursements
(124)(38)
Operating and maintenance expense - Loan forgiven
(90)— 
Total deduction to Operating Expenses
(214)(38)
Long-term debt:
DWR Loan Outstanding at December 31
$98 $312 
(1) On January 11, 2024, the Utility received $233 million in disbursements from the DWR.
Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income
The changes, net of income tax, in PG&E Corporation’s accumulated other comprehensive income (loss) for the year ended December 31, 2023 consisted of the following:
(in millions, net of income tax)Pension
Benefits		Other
Benefits		Customer Credit TrustTotal
Beginning balance$(12)$18 $(6)$— 
Other comprehensive income before reclassifications:
Unrealized gain on investments (net of taxes of $0, $0 and $3, respectively)
— — 8 8 
Unrecognized net actuarial gain (loss) (net of taxes of $76, $28 and $0, respectively)
(196)73 — (123)
Regulatory account transfer (net of taxes of $70, $28 and $0, respectively)
180 (73)— 107 
Amounts reclassified from other comprehensive income:
Amortization of prior service cost (credit) (net of taxes of $1, $1 and $0, respectively) (1)
(3)2 — (1)
Amortization of net actuarial (gain) loss (net of taxes of $0, $5 and $0, respectively) (1)
1 (14)— (13)
Regulatory account transfer (net of taxes of $1, $4 and $0, respectively) (1)
2 12 — 14 
Net current period other comprehensive income (loss)(16)— 8 (8)
Ending balance$(28)$18 $2 $(8)
(1) These components are included in the computation of net periodic pension and other postretirement benefit costs.  See Note 12 below for additional details.
The changes, net of income tax, in PG&E Corporation’s accumulated other comprehensive income (loss) for the year ended December 31, 2022 consisted of the following:
(in millions, net of income tax)Pension
Benefits		Other
Benefits		Customer Credit TrustTotal
Beginning balance$(33)$18 $— $(15)
Other comprehensive income before reclassifications:
Unrealized loss on investments (net of taxes of $0, $0 and $3, respectively)
— — (6)(6)
Unrecognized net actuarial gain (loss) (net of taxes of $102, $99 and $0, respectively)
263 (255)— 8 
Regulatory account transfer (net of taxes of $94, $99 and $0, respectively)
(242)255 — 13 
Amounts reclassified from other comprehensive income:
Amortization of prior service cost (credit) (net of taxes of $1, $2 and $0, respectively) (1)
(3)5 — 2 
Amortization of net actuarial (gain) loss (net of taxes of $1, $11 and $0, respectively)(1)
1 (29)— (28)
Regulatory account transfer (net of taxes of $0, $9 and $0, respectively) (1)
2 24 — 26 
Net current period other comprehensive income (loss)21 — (6)15 
Ending balance$(12)$18 $(6)$— 
(1) These components are included in the computation of net periodic pension and other postretirement benefit costs.  See Note 12 below for additional details.
Schedule of Lease Expense
The following table shows the lease cost recognized for the fixed and variable component of the Utility’s lease obligations:
Year Ended December 31,
(in millions)2023
Financing lease fixed cost:
Amortization of ROU assets$115 
Interest on lease liabilities27 
Financing lease variable cost3 
Total financing lease costs$145 
The following table shows the lease cost recognized for the fixed and variable component of the Utility’s lease obligations:
Year Ended December 31,
(in millions)20232022
Operating lease fixed cost$269 $500 
Operating lease variable cost1,632 1,829 
Total operating lease costs$1,901 $2,329 
Schedule of Future Expected Operating Lease Payments
At December 31, 2023, the Utility’s future expected financing lease payments were as follows:
(in millions)December 31, 2023
2024$305 
2025531 
202644 
2027— 
2028— 
Total lease payments880 
Less imputed interest(67)
Total$813 
At December 31, 2023, the Utility’s future expected operating lease payments were as follows:
(in millions)December 31, 2023
2024$116 
2025115 
2026112 
2027110 
202897 
Thereafter256 
Total lease payments806 
Less imputed interest(208)
Total$598