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Realignment Costs - Schedule of Accrued Liabilities in Company's Consolidated Balance Sheet Included Amounts Related to Realignment Costs (Detail)
$ in Millions
6 Months Ended
Jun. 30, 2020
USD ($)
Restructuring and Related Activities [Abstract]  
Balance at December 31, 2019 $ 0.0
Pre-tax charges 43.9
Utilization (13.9)
Foreign currency translation and other (0.4)
Balance at June 30, 2020 $ 29.6