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Regulatory Assets and Liabilities (Tables)
 12 Months Ended
Dec. 31, 2021
Regulatory Assets [Line Items]  
Schedule of Regulatory Liabilities [Table Text Block]
Regulatory assets and liabilities consist of the following (dollars in millions):
Remaining Amortization PeriodAs of December 31,
20212020
Earning a Return (1)
Not Earning a ReturnTotalTotal
Regulatory assets:
Price risk management
(2)
$— $55 $55 $124 
Pension plan
(3)
— 131 131 240 
Debt issuance costs 2049— 23 23 25 
Trojan decommissioning activities 2059— 90 90 95 
February 2021 ice storm and damage
(4)
67 — 67 — 
Power cost adjustment mechanism
(5)
29 — 29 — 
2020 Labor Day wildfire
(4)
45 — 45 15 
COVID-19
(4)
36 — 36 10 
Other Various58 23 81 83 
Total regulatory assets$235 $322 $557 $592 
Regulatory liabilities:
Asset retirement removal costs
(6)
$1,047 $— $1,047 $1,016 
Deferred income taxes
(7)
208 — 208 239 
Asset retirement obligations
(6)
43 — 43 37 
Price risk management
(2)
— 55 55 18 
OtherVarious57 56 113 82 
Total regulatory liabilities$1,355 $111 $1,466 $1,392 
(1)Earning a return includes either interest on the regulatory asset or liability, or inclusion of the regulatory asset or liability as an increase or decrease to rate base at the allowed rate of return.
(2)No amortization period in accordance with ratemaking and cost recovery processes authorized by the OPUC, PGE recognizes a regulatory asset or liability to defer unrealized losses or gains on derivative instruments until settlement.
(3)Recovery expected over the average service life of employees.
(4)Amortization period not yet determined.
(5)Amortization period not yet determined. A final determination regarding the 2021 PCAM results will be made by the OPUC through a public filing and review in 2022. The OPUC has significant discretion in making the final determination of recovery. The OPUC’s conclusion of overall prudence, including an earnings review, could result in a portion, or all, of PGE’s deferral being disallowed for recovery. Such disallowance would be recognized as a charge to earnings.
(6)Recovery or refund expected over the estimated lives of the underlying assets and treated as a reduction to rate base.
(7)Refund expected primarily through amortization using the average rate assumption method over the average life of the underlying assets and treated as a reduction to rate base.
Schedule of Regulatory Assets [Table Text Block]
Regulatory assets and liabilities consist of the following (dollars in millions):
Remaining Amortization PeriodAs of December 31,
20212020
Earning a Return (1)
Not Earning a ReturnTotalTotal
Regulatory assets:
Price risk management
(2)
$— $55 $55 $124 
Pension plan
(3)
— 131 131 240 
Debt issuance costs 2049— 23 23 25 
Trojan decommissioning activities 2059— 90 90 95 
February 2021 ice storm and damage
(4)
67 — 67 — 
Power cost adjustment mechanism
(5)
29 — 29 — 
2020 Labor Day wildfire
(4)
45 — 45 15 
COVID-19
(4)
36 — 36 10 
Other Various58 23 81 83 
Total regulatory assets$235 $322 $557 $592 
Regulatory liabilities:
Asset retirement removal costs
(6)
$1,047 $— $1,047 $1,016 
Deferred income taxes
(7)
208 — 208 239 
Asset retirement obligations
(6)
43 — 43 37 
Price risk management
(2)
— 55 55 18 
OtherVarious57 56 113 82 
Total regulatory liabilities$1,355 $111 $1,466 $1,392 
(1)Earning a return includes either interest on the regulatory asset or liability, or inclusion of the regulatory asset or liability as an increase or decrease to rate base at the allowed rate of return.
(2)No amortization period in accordance with ratemaking and cost recovery processes authorized by the OPUC, PGE recognizes a regulatory asset or liability to defer unrealized losses or gains on derivative instruments until settlement.
(3)Recovery expected over the average service life of employees.
(4)Amortization period not yet determined.
(5)Amortization period not yet determined. A final determination regarding the 2021 PCAM results will be made by the OPUC through a public filing and review in 2022. The OPUC has significant discretion in making the final determination of recovery. The OPUC’s conclusion of overall prudence, including an earnings review, could result in a portion, or all, of PGE’s deferral being disallowed for recovery. Such disallowance would be recognized as a charge to earnings.
(6)Recovery or refund expected over the estimated lives of the underlying assets and treated as a reduction to rate base.
(7)Refund expected primarily through amortization using the average rate assumption method over the average life of the underlying assets and treated as a reduction to rate base.