Receivables, Net - Rollforward of Allowance for Doubtful Accounts (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for doubtful accounts - January 1	$ 13.3	$ 12.6	$ 12.9
Charges to income	3.6	4.0	1.8
Write-offs	(0.8)	(1.6)	(1.7)
Foreign currency and other	0.0	(1.7)	(0.4)
Allowance for doubtful accounts - December 31	$ 16.1	$ 13.3	$ 12.6