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Stock-Based Compensation - Key Components of Outperformance Plan (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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2020 PSU Plan | Operational Performance Unit |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Maximum bonus pool | $ 6.7 | $ 14.9
2020 PSU Plan | Relative TSR Performance Unit |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Maximum bonus pool | 6.7 | $ 14.9
Outperformance Program |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |
Maximum bonus pool | $ 28.0 |

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