Revenue Recognition - Schedule of Net Sales by Geography (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Sales Information [Line Items]
Net Sales	$ 2,007.6	$ 1,949.5	$ 4,025.2	$ 3,921.9
Americas [Member]
Sales Information [Line Items]
Net Sales	1,216.3	1,203.9	2,424.4	2,433.8
EMEA [Member]
Sales Information [Line Items]
Net Sales	457.7	438.2	954.2	891.4
Asia Pacific [Member]
Sales Information [Line Items]
Net Sales	$ 333.6	$ 307.4	$ 646.6	$ 596.7