Revenue Recognition - Schedule of Net Sales by Geography (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Sales Information [Line Items]
Net Sales	$ 2,125.7	$ 1,892.4	$ 1,988.6	$ 1,975.5	$ 2,071.0	$ 1,836.7	$ 2,007.6	$ 2,017.6	$ 7,982.2	$ 7,932.9	$ 7,803.3
Americas [Member]
Sales Information [Line Items]
Net Sales									4,875.8	4,837.2	4,844.8
EMEA [Member]
Sales Information [Line Items]
Net Sales									1,746.9	1,801.9	1,745.2
Asia Pacific [Member]
Sales Information [Line Items]
Net Sales									$ 1,359.5	$ 1,293.8	$ 1,213.3