XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.22.4

Stock-based Compensation Expense Restricted and Performance Stock Unit activity (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures [Abstract] |
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] | Pursuant to the Portland General Electric Company Stock Incentive Plan as amended and restated effective February 13, 2018 (the Plan), the Company may grant a variety of equity-based awards, including restricted stock units (RSUs) with time-based vesting conditions (time-based RSUs) and performance-based vesting conditions (performance-based RSUs), to non-employee directors, officers, or certain key employees. RSU activity is summarized in the following table:
| Units |  | Weighted Average Grant Date Fair Value
Nonvested units as of December 31, 2019 | 463,390 |  |  | $ | 43.52 |
Granted | 202,883 |  |  | 56.45 |
Forfeited | (17,341) |  |  | 50.27 |
Vested | (170,536) |  |  | 45.67 |
Nonvested units as of December 31, 2020 | 478,396 |  |  | 48.00 |
Granted | 318,844 |  |  | 43.01 |
Forfeited | (9,754) |  |  | 48.35 |
Vested | (212,676) |  |  | 40.33 |
Nonvested units as of December 31, 2021 | 574,810 |  |  | 48.07 |
Granted | 271,696 |  |  | 51.29 |
Forfeited | (76,913) |  |  | 49.48 |
Vested | (190,132) |  |  | 49.11 |
Nonvested units as of December 31, 2022 | 579,461 |  |  | 49.23 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | For the TSR portion of the performance-based RSUs, fair value is determined using a Monte Carlo simulation with the following weighted average assumptions:
| 2022 |  | 2021 |  | 2020
Risk-free interest rate |  |  | 1.7 | % |  |  |  | 0.2 | % |  |  |  | 1.4 | %
Expected term (in years) |  |  | 2.9 |  |  |  | 2.9 |  |  |  | 2.9
Volatility | 26.4 | % | - | 37.9 | % |  | 26.1 | % | - | 37.9 | % |  | 13.5 | % | - | 97.3 | %

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodNetOfForfeituresAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration