Intangible Assets and Goodwill (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

		As of March 31, 2013							As of December 31, 2012
(In millions)	Estimated Life	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Out-licensed patents	13-23 years	$	578.0	$	(428.5	)	$	149.5	$	578.0	$	(421.0	)	$	157.0
Core developed  technology	15-23 years	3,005.3		(2,006.9		)	998.4		3,005.3		(1,965.7		)	1,039.6
In-process research and development	Up to 15 years upon commercialization	330.1		—			330.1		330.1		—			330.1
Trademarks and  tradenames	Indefinite	64.0		—			64.0		64.0		—			64.0
Acquired and in-licensed rights  and patents	6-16 years	55.1		(15.6		)	39.5		53.7		(12.9		)	40.8
Total intangible assets		$	4,032.5	$	(2,451.0	)	$	1,581.5	$	4,031.1	$	(2,399.6	)	$	1,631.5

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

(In millions)	As of March 31, 2013
2013 (remaining nine months)	$	277.0
2014	367.7
2015	362.8
2016	365.8
2017	355.1
Total	$	1,728.4

Summary of roll forward of the changes in goodwill

(In millions)	As of March 31, 2013			As of December 31, 2012
Goodwill, beginning of period	$	1,201.3		$	1,146.3
Goodwill acquired during the period	13.5			48.2
Other	(4.1		)	6.8
Goodwill, end of period	$	1,210.7		$	1,201.3