Inventory (Tables)

6 Months Ended

Jun. 30, 2016

Inventory Disclosure [Abstract]

Components of inventory

The components of inventory are summarized as follows:

(In millions)	As of June 30, 2016		As of December 31, 2015
Raw materials	$	235.0	$	213.0
Work in process	654.6		577.6
Finished goods	139.1		143.0
Total inventory	$	1,028.7	$	933.6
Balance Sheet Classification:
Inventory	$	996.4	$	893.4
Investments and other assets	32.3		40.2
Total inventory	$	1,028.7	$	933.6