Valuation and Qualifying Accounts (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance Beginning of Year		$ 42.0	$ 46.6	$ 42.9
Charges to Costs and Expenses		24.0	27.4	23.3
Deductions	[1]	(16.8)	(32.0)	(19.6)
Balance End of Year		49.2	42.0	46.6
Allowance for inventory obsolescence
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance Beginning of Year		34.5	36.5	31.3
Charges to Costs and Expenses		21.2	26.3	21.6
Deductions	[1]	(13.7)	(28.3)	(16.4)
Balance End of Year		42.0	34.5	36.5
Allowance for doubtful accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance Beginning of Year		7.5	10.1	11.6
Charges to Costs and Expenses		2.8	1.1	1.7
Deductions	[1]	(3.1)	(3.7)	(3.2)
Balance End of Year		$ 7.2	$ 7.5	$ 10.1

[1] Includes writeoffs and the impact of foreign currency exchange rates.