Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

		As of December 31, 2014							As of December 31, 2013
(In millions)	Estimated Life	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Out-licensed patents	13-23 years	$	543.3	$	(481.7	)	$	61.6	$	578.0	$	(450.8	)	$	127.2
Developed technology	15-23 years	3,005.3		(2,396.8		)	608.5		3,005.3		(2,165.4		)	839.9
In-process research and development	Indefinite until commercialization	314.1		—			314.1		327.4		—			327.4
Trademarks and tradenames	Indefinite	64.0		—			64.0		64.0		—			64.0
Acquired and in-licensed rights and patents	6-17 years	3,280.4		(300.1		)	2,980.3		3,240.0		(123.8		)	3,116.2
Total intangible assets		$	7,207.1	$	(3,178.6	)	$	4,028.5	$	7,214.7	$	(2,740.0	)	$	4,474.7

Estimated future amortization of intangible assets

(In millions)	As of December 31, 2014
2015	$	344.3
2016	313.2
2017	286.3
2018	283.7
2019	273.6
Total	$	1,501.1

Summary of roll forward of the changes in goodwill

	As of December 31,
(In millions)	2014		2013
Goodwill, beginning of year	$	1,232.9	$	1,201.3
Increase to goodwill	527.3		35.7
Other	—		(4.1		)
Goodwill, end of year	$	1,760.2	$	1,232.9