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Stock-Based Compensation | 3 Months Ended
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Mar. 31, 2022
Share-based Payment Arrangement [Abstract] |
Share-based Payment Arrangement [Text Block] | Stock-Based Compensation The following table presents the Registrants' pre-tax compensation expense and related income tax benefit for the three months ended March 31, 2022 and 2021 related to performance units and restricted stock units for the Registrants' employees.
|  |  | OGE Energy |  | OG&E
|  | Three Months Ended March 31, |  | Three Months Ended March 31,
(In millions) |  |  | 2022 | 2021 |  | 2022 | 2021
Performance units - total shareholder return |  |  | $ | 1.8 |  | $ | 2.0 |  |  | $ | 0.6 |  | $ | 0.4 |
Restricted stock units |  |  | 0.5 |  | 0.5 |  |  | 0.2 |  | — |
Total compensation expense |  |  | $ | 2.3 |  | $ | 2.5 |  |  | $ | 0.8 |  | $ | 0.4 |
Income tax benefit |  |  | $ | 0.6 |  | $ | 0.6 |  |  | $ | 0.2 |  | $ | 0.1 |
During the three months ended March 31, 2022, OGE Energy issued 27,278 shares of new common stock pursuant to OGE Energy's Stock Incentive Plan and issued an immaterial amount of treasury stock to satisfy payouts of restricted stock unit grants to the Registrants' employees. During the three months ended March 31, 2022, OGE Energy granted 216,437 performance units (based on total shareholder return over a three-year period) and 116,539 restricted stock units (primarily a three-year cliff vesting period) to employees at $41.10 and $35.72 fair value per share, respectively. Of those performance units and restricted stock units granted, 60,923 and 32,804 were granted to OG&E employees, respectively, at $41.10 and $35.72 fair value per share, respectively.

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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