Other Current and Non-Current Liabilities - Schedule of Other Current Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Other Liabilities Current [Abstract]
Accrued accounts payable	$ 77.4	$ 58.1
Accrued compensation liability	27.5	61.7
Contingent consideration obligation	293.7	323.6
Accrued payables from acquisitions	120.0
Value-added taxes payable	10.8	6.4
Other current liabilities	17.6	12.6
Total other current liabilities	$ 547.0	$ 462.4

Amount of obligations incurred classified as other, payable within one year or the normal operating cycle, if longer.

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Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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