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Summary of Significant Accounting Policies - Summary of Other (Income) Expense, Net (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounting Policies [Abstract] |  |  |
Other expense | $ 72.2 | $ 52.2 | $ 43.8
Other income | (17.0) | (27.6) | (12.2)
Other expense, net | $ 55.2 | $ 24.6 | $ 31.6

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