Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consisted of the following (in millions):

	As of December 31,
	2017		2016
Finished goods	$	1,632.2	$	1,556.9
Work in progress		200.0		141.7
Raw materials		249.6		260.8
Inventories	$	2,081.8	$	1,959.4