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Incentive Plans - Schedule of Compensation Expense (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Long-term incentive units |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 14.5 | $ 21.7 | $ 15.4
Deferred compensation, capitalized | 0.2 | 0.2 | 0.2
Unearned Compensation | $ 16.6 | $ 20.7 |
Expected period to recognize unearned compensation (in years) | 2 years 1 month 6 days | 2 years 1 month 6 days |
Market-based performance awards |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 12.9 | $ 21.4 | 23.9
Deferred compensation, capitalized | 0.2 | 0.5 | 0.7
Unearned Compensation | $ 19.9 | $ 30.3 |
Expected period to recognize unearned compensation (in years) | 2 years | 2 years |
Service Based Restricted Stock Units |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 21.1 | $ 25.9 | 23.2
Deferred compensation, capitalized | 7.5 | 5.4 | 3.3
Unearned Compensation | $ 66.4 | $ 55.4 |
Expected period to recognize unearned compensation (in years) | 2 years 6 months | 2 years 6 months |
Interxion awards |  |  |
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] |  |  |
Deferred compensation, expensed | $ 6.0 | $ 4.7 | $ 17.7
Deferred compensation, capitalized | $ 0.1 |  |
Unearned Compensation |  | $ 1.9 |
Expected period to recognize unearned compensation (in years) | 0 years | 0 years |

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