Intangible Assets and Goodwill (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

		As of September 30, 2012							As of December 31, 2011
(In millions)	Estimated Life	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Out-licensed patents	13-23 years	$	578.0	$	(413.6	)	$	164.4	$	578.0	$	(391.3	)	$	186.7
Core developed  technology	15-23 years	3,005.3		(1,924.1		)	1,081.2		3,005.3		(1,801.1		)	1,204.2
In-process research and development	Up to 15 years upon commercialization	330.1		—			330.1		110.9		—			110.9
Trademarks and  tradenames	Indefinite	64.0		—			64.0		64.0		—			64.0
In-licensed rights  and patents	6-16 years	52.4		(10.9		)	41.5		47.2		(4.8		)	42.4
Assembled workforce	4 years	2.1		(2.1		)	—		2.1		(2.1		)	—
Total intangible assets		$	4,031.9	$	(2,350.7	)	$	1,681.2	$	3,807.5	$	(2,199.3	)	$	1,608.2

Summary of roll forward of the changes in goodwill

(In millions)	As of September 30, 2012		As of December 31, 2011
Goodwill, beginning of period	$	1,146.3	$	1,146.3
Goodwill acquired during the period	51.6		—
Other	6.8		—
Goodwill, end of period	$	1,204.7	$	1,146.3