Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

	March 31,		December 31,
	2018		2017
	(in millions)
Finished goods	$	1,703.3	$	1,618.7
Work in progress		233.8		200.0
Raw materials		188.8		249.6
Inventories	$	2,125.9	$	2,068.3