Valuation and Qualifying Accounts and Reserves - Components of Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 6.5	$ 8.4	$ 10.5
Charged to Costs and Expenses	2.3	0.3	(0.1)
Deductions	(1.0)	(2.5)	(2.1)
Foreign Currency Translation and Other	1.3	0.3	0.1
Balance at End of Year	9.1	6.5	8.4
Inventory obsolescence reserve
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	15.5	13.4	12.2
Charged to Costs and Expenses	4.8	3.5	3.8
Deductions	(1.4)	(2.7)	(2.1)
Foreign Currency Translation and Other	(0.8)	1.3	(0.5)
Balance at End of Year	18.1	15.5	13.4
Valuation allowance on deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	189.2	167.7	208.9
Charged to Costs and Expenses	32.8	3.4	(37.4)
Deductions	0.0		0.0
Foreign Currency Translation and Other	(3.6)	18.1	(3.8)
Balance at End of Year	$ 218.4	$ 189.2	$ 167.7