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Balance Sheet Components (Tables)
 9 Months Ended
Sep. 30, 2023
Balance Sheet Components [Abstract]  
Allowance for Credit Losses [Text Block] The following summarizes activity in the allowance for credit losses (in millions):
Three Months Ended September 30,
Nine Months Ended September 30,
 20232023
Balance as of beginning of period$13 $12 
Increase in provision2 6 
Amounts written off(4)(10)
Recoveries1 4 
Balance as of end of period$12 $12 
Schedule of Other Current Assets [Table Text Block]
Other current assets consist of the following (in millions):
September 30, 2023December 31, 2022
Prepaid expenses$45 $69 
Assets from price risk management activities74 313 
Margin deposits30 116 
Other current assets$149 $498 
Schedule of Public Utility Property, Plant, and Equipment [Table Text Block]
Electric utility plant, net consists of the following (in millions):         
September 30, 2023December 31, 2022
Electric utility plant in-service$13,045 $12,421 
Construction work-in-progress709 467 
Total cost13,754 12,888 
Less: accumulated depreciation and amortization(4,676)(4,423)
Electric utility plant, net$9,078 $8,465 
Schedule of Regulatory Assets and Liabilities [Text Block]
Regulatory assets and liabilities consist of the following (in millions):
September 30, 2023December 31, 2022
CurrentNoncurrentCurrentNoncurrent
Regulatory assets:
Price risk management$— $96 $— $1 
Pension and other postretirement plans— 95 — 95 
Debt issuance costs— 20 — 21 
Trojan decommissioning activities— 137 — 133 
February 2021 ice storm and damage12 57 10 64 
Power cost adjustment mechanism16 3 14 14 
2020 Labor Day wildfire5 24 4 27 
COVID-1912 4 — 22 
Wildfire mitigation— 31 — 28 
Other10 79 26 68 
Total regulatory assets$55 $546 $54 $473 
Regulatory liabilities:
Asset retirement removal costs$— $1,164 $— $1,136 
Deferred income taxes— 183 — 194 
Asset retirement obligations— 10 — 7 
Price risk management1 — 195 — 
Boardman Refund3 3 — — 
Other29 58 39 52 
Total regulatory liabilities$33 
*
$1,418 $234 
*
$1,389 
* Included in Accrued expenses and other current liabilities in the condensed consolidated balance sheets.
Other Liabilities Disclosure [Text Block]
Accrued expenses and other current liabilities consist of the following (in millions):
September 30, 2023December 31, 2022
Accrued employee compensation and benefits$74 $66 
Accrued taxes payable50 29 
Accrued interest payable47 31 
Accrued dividends payable50 42 
Regulatory liabilities—current33 234 
Margin deposits from wholesale counterparties7 140 
Other95 99 
Total accrued expenses and other current liabilities$356 $641 
Pension and Other Postretirement Benefits Disclosure [Text Block]
Components of net periodic benefit cost under the defined benefit pension plan are as follows (in millions):
Three Months Ended September 30, Nine Months Ended September 30,
2023202220232022
Service cost$3 $4 $9 $12 
Interest cost*9 7 27 21 
Expected return on plan assets*(11)(12)(33)(36)
Amortization of net actuarial loss*— 4 — 12 
Net periodic benefit cost$1 $3 $3 $9 

* The net expense portion of non-service cost components are included in Miscellaneous income, net within Other income on the Company’s condensed consolidated statements of income and comprehensive income.

PGE sponsors a health and welfare plan, under which it offers medical and life insurance benefits, as well as health reimbursement arrangements. Retirees who participate in the Company’s postretirement health insurance plans are eligible for a Defined Dollar Medical Benefit, which limits PGE’s obligation pursuant to the postretirement health plan by establishing a maximum benefit per employee with employees responsible for the additional cost. In the third quarter of 2022, PGE executed a buyout of the Non-represented Retiree Medical Plan, resulting in an $11 million settlement gain, which has been recorded in Miscellaneous income, net on the condensed consolidated statement of income and comprehensive income.