Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets

Summary of changes in the carrying amount of the entity's goodwill

(in millions)
Balance as of December 31, 2013	$	6,277
Additions		—
Foreign currency translation and other adjustments		(415	)
Balance as of December 31, 2014		5,862
Additions		7,610
Foreign currency translation and other adjustments		(304	)
Balance as of December 31, 2015	$	13,168

Schedule of intangible assets

	2015							2014
as of December 31 (in millions)	Gross carrying amount		Accumulated amortization			Net carrying amount		Gross carrying amount		Accumulated amortization			Net carrying amount
Definite-lived intangible assets
Developed product rights	$	9,103	$	(3,944	)	$	5,159	$	4,546	$	(3,706	)	$	840
License agreements		8,000		(1,023	)		6,977		1,097		(869	)		228
Total definite-lived intangible assets		17,103		(4,967	)		12,136		5,643		(4,575	)		1,068
Indefinite-lived research and development		7,573		—			7,573		445		—			445
Total intangible assets, net	$	24,676	$	(4,967	)	$	19,709	$	6,088	$	(4,575	)	$	1,513