Other Current Liabilities (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Deferred revenue (Note 10)	$ 90.3	$ 82.8
Accrued legal and regulatory (Note 14)	60.0	30.4
Accrued payroll	55.0	110.6
Income taxes payable	25.6	14.9
Accrued employee benefits	23.4	35.4
Operating lease liabilities	18.7	19.9
Contingent consideration (Note 2)	7.5	7.2
Accrued interest	4.0	4.0
Other	25.3	31.3
Total other current liabilities	$ 309.8	$ 336.5

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