Inventories

3 Months Ended

Mar. 31, 2021

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following:

	March 31,		December 31,
(In millions)	2021		2020
Raw materials	$	576.2	$	459.4
Work-in-process	971.2		904.6
Finished goods	117.9		121.7
Deferred costs	499.4		430.9
	$	2,164.7	$	1,916.6

Deferred costs represent the costs of product manufactured and shipped to the Company's collaborators for which recognition of revenue has been deferred.