
	Inventory

The components of inventory are summarized as follows:



	As of December 31,
(In millions)	2014		2013
Raw materials	$	128.3	$	115.0
Work in process	511.5		435.4
Finished goods	164.2		108.6
Total inventory	$	804.0	$	659.0

As of December 31, 2014 our inventory includes $6.3 million associated with our ZINBRYTA (daclizumab high yield process) program, which has been capitalized in advance of regulatory approval. As of December 31, 2013, our inventory included $93.7 million associated with our ELOCTATE, ALPROLIX and PLEGRIDY programs, which were capitalized in advance of regulatory approval. ELOCTATE, ALPROLIX and PLEGRIDY were approved during 2014. For information on our pre-approval inventory policy, please read Note 1, Summary of Significant Accounting Policies to these consolidated financial statements

Amounts written down related to excess, obsolete, unmarketable or other inventory are charged to cost of sales, and totaled $50.6 million, $47.3 million, and $24.8 million for the years ended December 31, 2014, 2013, and 2012, respectively.