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Incentive Plans - Schedule of Compensation Expense (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022
Long-term incentive units |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 2.8 | $ 5.2 |
Unearned Compensation | $ 25.0 |  | $ 20.7
Expected period to recognize unearned compensation (in years) | 2 years 8 months 12 days |  |
Market-based performance awards |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 4.1 | 5.0 |
Deferred compensation, capitalized | 0.1 | 0.2 |
Unearned Compensation | $ 27.2 |  | 30.3
Expected period to recognize unearned compensation (in years) | 2 years 6 months |  |
Service Based Restricted Stock Units |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 7.7 | 5.3 |
Deferred compensation, capitalized | 1.1 | 1.0 |
Unearned Compensation | $ 92.7 |  | 55.4
Expected period to recognize unearned compensation (in years) | 3 years 1 month 6 days |  |
Interxion awards |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 0.7 | $ 0.9 |
Unearned Compensation | $ 1.1 |  | $ 1.9
Expected period to recognize unearned compensation (in years) | 6 months |  |

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