Receivables (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Receivables [Abstract]
Receivables	$ 1,659.4	$ 1,703.0	$ 1,519.3
Allowance at beginning of period	(6.3)	(4.2)	(3.9)
Reversal of allowance	0.9	0.9	0.5
Addition to allowance	(3.8)	(3.9)	(1.5)
Write-off against allowance	1.6	1.2	0.5
Translation difference	0.3	(0.3)	0.2
Allowance at end of period	(7.3)	(6.3)	(4.2)
Receivables, net of allowance	$ 1,652.1	$ 1,696.7	$ 1,515.1