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Employee Benefits (Tables)
 12 Months Ended
Dec. 31, 2022
Employee Benefits [Abstract]  
Assets and Liabilities associated with Non Qualified Benefit Plans [Table Text Block]
Trust assets and plan liabilities related to the NQBP included in PGE’s consolidated balance sheets are as follows as of December 31 (in millions):
 20222021
  NQBPOther NQBPTotalNQBPOther NQBPTotal
Non-qualified benefit plan trust assets$19 $19 $38 $21 $24 $45 
Non-qualified benefit plan liabilities *16 67 83 25 70 95 
*    For the NQBP, excludes the current portion of $2 million in 2022 and 2021, which are classified in Accrued expenses and other current liabilities in the consolidated balance sheets.
Schedule of Allocation of Plan Assets [Table Text Block]
The asset allocations for the plans, and the target allocation, are as follows:
 As of December 31,
  20222021
ActualTarget *ActualTarget *
Defined Benefit Pension Plan:
Equity securities55 %55 %61 %60 %
Debt securities45 45 39 40 
Total100 %100 %100 %100 %
Other Postretirement Benefit Plans:
Equity securities39 %40 %59 %57 %
Debt securities61 60 41 43 
Total100 %100 %100 %100 %
Non-Qualified Benefits Plans:
Equity securities7 %5 %8 %7 %
Debt securities9 11 13 14 
Insurance contracts84 84 79 79 
Total100 %100 %100 %100 %
*    The target for the Defined Benefit Pension Plan represents the mid-point of the investment target range. Due to the nature of the investment vehicles in both the Other Postretirement Benefit Plans and the NQBP, these targets are the weighted average of the mid-point of the respective investment target ranges approved by the Investment Committee. Due to the method used to calculate the weighted average targets for the Other Postretirement Benefit Plans and NQBP, reported percentages are affected by the fair market values of the investments within the pools.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
The Company’s financial assets and liabilities whose values were recognized at fair value are as follows by level within the fair value hierarchy (in millions): 
December 31, 2022
Level 1Level 2Level 3
Other(2)
Total
Assets:
Cash equivalents$150 $— $— $— $150 
Nuclear decommissioning trust: (1)
Debt securities:
Domestic government9 10 — — 19 
Corporate credit— 9 — — 9 
Money market funds measured at NAV (2)
— — — 11 11 
Non-qualified benefit plan trust: (3)
Money market funds1 — — — 1 
Equity securities—domestic3 — — — 3 
Debt securities—domestic government3 — — — 3 
Price risk management activities: (1) (4)
Electricity— 93 63 — 156 
Natural gas— 225 6 — 231 
$166 $337 $69 $11 $583 
Liabilities:
Price risk management activities: (1) (4)
Electricity$— $53 $93 $— $146 
Natural gas— 39 8 — 47 
$— $92 $101 $— $193 
(1)Activities are subject to regulation, with certain gains and losses deferred pursuant to regulatory accounting and included in regulatory assets or regulatory liabilities as appropriate.
(2)Assets are measured at NAV as a practical expedient and not subject to hierarchy level classification disclosure.
(3)Excludes insurance policies of $31 million, which are recorded at cash surrender value.
(4)For further information regarding price risk management derivatives, see Note 6, Risk Management.

December 31, 2021
Level 1Level 2Level 3
Other(2)
Total
Assets:
Cash equivalents$44 $— $— $— $44 
Nuclear decommissioning trust: (1)
Debt securities:
Domestic government9 10 — — 19 
Corporate credit— 14 — — 14 
Money market funds measured at NAV (2)
— — — 14 14 
Non-qualified benefit plan trust: (3)
Money market funds1 — — — 1 
Equity securities—domestic4 — — — 4 
Debt securities—domestic government4 — — — 4 
Price risk management activities: (1) (4)
Electricity— 16 1 — 17 
Natural gas— 115 5 — 120 
$62 $155 $6 $14 $237 
Liabilities:
Price risk management activities: (1) (4)
Electricity$— $33 $90 $— $123 
Natural gas— 13 1 — 14 
$— $46 $91 $— $137 
(1)Activities are subject to regulation, with certain gains and losses deferred pursuant to regulatory accounting and included in regulatory assets or regulatory liabilities as appropriate.
(2)Assets are measured at NAV as a practical expedient and not subject to hierarchy level classification disclosure.
(3)Excludes insurance policies of $36 million, which are recorded at cash surrender value.
(4)For further information regarding price risk management derivatives, see Note 6, Risk Management.
The fair values of the Company’s pension plan assets and other postretirement benefit plan assets by asset category are as follows (in millions):
 Level 1Level 2Level 3Other *Total
As of December 31, 2022:
Defined Benefit Pension Plan assets:
Equity securities—Domestic$16 $— $— $— $16 
Investments measured at NAV:
Money market funds— — — 4 4 
Collective trust funds— — — 525 525 
Private equity funds— — — 2 2 
$16 $— $— $531 $547 
Other Postretirement Benefit Plans assets:
Money market funds$4 $— $— $— $4 
Equity securities:
Domestic— 2 — — 2 
International3 — — — 3 
Debt securities—Domestic— 4 — — 4 
Investments measured at NAV:
Money market funds— — — 5 5 
Collective trust funds— — — 3 3 
$7 $6 $— $8 $21 
As of December 31, 2021:
Defined Benefit Pension Plan assets:
Equity securities—Domestic$25 $— $— $— $25 
Investments measured at NAV:
Money market funds— — — 6 6 
Collective trust funds— — — 764 764 
Private equity funds— — — 5 5 
$25 $— $— $775 $800 
Other Postretirement Benefit Plans assets:
Money market funds$3 $— $— $— $3 
Equity securities:
Domestic— 4 — — 4 
International10 — — — 10 
Debt securities—Domestic government— 6 — — 6 
Investments measured at NAV:
Money market funds— — — 6 6 
Collective trust funds— — — 8 8 
$13 $10 $— $14 $37 
*Assets are measured at NAV as a practical expedient and not subject to hierarchy level classification disclosure. These assets are listed in the totals of the fair value hierarchy to permit the reconciliation to amounts presented in the financial statements.
Schedule of Defined Benefit Plans Disclosures [Table Text Block] The following tables provide certain information with respect to the Company’s defined benefit pension plan, other postretirement benefits, and NQBP as of and for the years ended December 31, 2022 and 2021. Information related to the Other NQBP is not included in the following tables (dollars in millions):
 Defined Benefit Pension PlanOther Postretirement BenefitsNon-Qualified
Benefit Plans
  202220212022202120222021
Benefit obligation:
As of January 1$972 $1,010 $71 $76 $27 $28 
Service cost17 19 1 2 — — 
Interest cost28 27 2 2 1 1 
Actuarial gain(255)(26)(15)(5)(7)— 
Benefit payments(69)(47)(4)(5)(3)(2)
Administrative expenses(3)(3)— — — — 
Plan amendment5 (8)1 1 — — 
Plan settlements— — (13)— — — 
As of December 31$695 $972 $43 $71 $18 $27 
Fair value of plan assets:
As of January 1$800 $753 $37 $35 $21 $19 
Actual return on plan assets(181)97 (6)4 (2)1 
Company contributions— — 7 3 3 3 
Benefit payments(69)(47)(4)(5)(3)(2)
Administrative expenses(3)(3)— — — — 
Plan settlements— — (13)— — — 
As of December 31$547 $800 $21 $37 $19 $21 
Unfunded position as of December 31$(148)$(172)$(22)$(34)$1 $(6)
Accumulated benefit plan obligation as of December 31$656 $885 N/AN/A$17 $23 
Classification in consolidated balance sheet:
Noncurrent asset$— $— $— $— $19 $21 
Current liability— — (1)— (2)(2)
Noncurrent liability(148)(172)(21)(34)(16)(25)
Net asset (liability)$(148)$(172)$(22)$(34)$1 $(6)
Amounts included in comprehensive income:
Net actuarial loss (gain)$(28)$(78)$(8)$(7)$(7)$(1)
Net settlement gain— — 11 — — — 
Net prior service credit5 (9)— — — — 
Amortization of net actuarial loss(15)(22)— — (1)(1)
Amortization of prior service credit2 — — 1 — — 
$(36)$(109)$3 $(6)$(8)$(2)
Amounts included in AOCL: *
Net actuarial loss (gain)$96 $139 $(7)$(3)$6 $14 
Prior service cost(1)(8)— (7)— — 
$95 $131 $(7)$(10)$6 $14 
* Amounts included in AOCL related to the Company’s defined benefit pension plan and other postretirement benefits are classified as Regulatory assets or liabilities as future recoverability is expected from retail customers.
Significant actuarial gains (losses) experienced that resulted in changes in projected benefit obligation included the following:
•For the defined benefit pension plan, actuarial gains and losses due to demographic experience, including assumption changes, were gains of $255 million and $26 million, and the changes between actual and expected return on plan assets were a loss of $227 million and a gain of $52 million, for the years ended December 31, 2022 and 2021, respectively.
•For the other postretirement benefits, actuarial gains and losses due to demographic experience, including assumption changes, were gains of $15 million and $5 million, and the changes between actual and expected return on plan assets were a loss of $6 million and a gain of $2 million, for each of the years ended December 31, 2022 and 2021, respectively.
Schedule of Net Benefit Costs [Table Text Block]
Net periodic benefit cost consists of the following for the years ended December 31 (in millions):

 Defined Benefit
Pension Plan		Other Postretirement
Benefits		Non-Qualified
Benefit Plans
  202220212020202220212020202220212020
Service cost$17 $19 $17 $1 $2 $2 $— $— $— 
Interest cost on benefit obligation28 27 31 2 2 2 1 1 1 
Expected return on plan assets(46)(45)(44)(2)(2)(2)— — — 
Amortization of prior service credit(2)— — — (1)(1)— — — 
Amortization of net actuarial loss15 22 17 — — — 1 1 1 
Settlement gain— — — (11)— — — — — 
Net periodic benefit cost$12 $23 $21 $(10)$1 $1 $2 $2 $2 
Employee Benefits Assumptions [Table]
The following assumptions were used in determining benefit obligations and net period benefit costs:
Defined Benefit Pension PlanOther Postretirement BenefitsNon-Qualified
Benefit Plans
202220212022202120222021
Assumptions used to determine benefit obligations: 
Discount rate5.42 %2.92 %5.47% -2.75% -5.42 %2.92 %
5.51 %3.11 %
Rate of compensation increase4.21 %4.26 %4.04 %4.13 %5.10 %4.10 %
Assumptions used to determine net periodic benefit cost:
Discount rate2.92 %2.64 %2.75% -2.22% -2.92 %2.64 %
3.11 %2.92 %
Rate of compensation increase 4.26 %3.65 %4.13 %4.58 %4.10 %4.10 %
Long-term rate of return on plan assets6.75 %6.88 %4.83 %5.04 %N/AN/A
Schedule of Expected Benefit Payments [Table Text Block]
The following table summarizes the benefits expected to be paid to participants in each of the next five years and in the aggregate for the five years thereafter (in millions):
 Payments Due
  202320242025202620272028 - 2032
Defined benefit pension plan$59 $54 $54 $54 $53 $262 
Other postretirement benefits4 4 5 5 3 14 
Non-qualified benefit plans2 2 2 2 2 8 
Total$65 $60 $61 $61 $58 $284