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Stock-Based Incentive Plans - Stock-Based Compensation Expense (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Payment Arrangement [Abstract] |  |  |
Equity classified awards expense | $ 12.0 | $ 16.2 | $ 11.6
Liability classified awards expense | (1.4) | 1.4 | 2.3
Total stock-based compensation expense | $ 10.6 | $ 17.6 | $ 13.9

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