Inventory (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Components of inventory

The components of inventory are summarized as follows:

(In millions)	As of March 31, 2016		As of December 31, 2015
Raw materials	$	249.5	$	213.0
Work in process	607.9		577.6
Finished goods	144.1		143.0
Total inventory	$	1,001.5	$	933.6
Balance Sheet Classification:
Inventory	$	964.6	$	893.4
Investments and other assets	36.9		40.2
Total inventory	$	1,001.5	$	933.6