Inventory (Tables)

9 Months Ended

Sep. 30, 2016

Inventory Disclosure [Abstract]

Components of inventory

The components of inventory are summarized as follows:

(In millions)	As of September 30, 2016		As of December 31, 2015
Raw materials	$	166.4	$	213.0
Work in process	712.0		577.6
Finished goods	171.1		143.0
Total inventory	$	1,049.5	$	933.6
Balance Sheet Classification:
Inventory	$	1,009.7	$	893.4
Investments and other assets	39.8		40.2
Total inventory	$	1,049.5	$	933.6