Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Net sales	$ 8,386	$ 7,477	$ 7,380
Cost of products sold	2,424	2,173	2,210
Gross profit	5,962	5,304	5,170
Operating expenses:
Selling, general and administrative expenses	3,099	2,873	2,902
Research and development expenses	920	876	817
Royalty expense	79	70	111
Amortization expense	545	495	438
Intangible asset impairment charges	11	19	195
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	29	123	(85)
Restructuring charges	28	26	69
Litigation-related charges	804	1,105	1,036
Pension termination charges	0	44	0
Gain on divestiture	0	0	(12)
Operating expenses	5,515	5,631	5,471
Operating income (loss)	447	(327)	(301)
Other income (expense):
Interest expense	(233)	(284)	(216)
Other, net	(37)	(39)	8
Income (loss) before income taxes	177	(650)	(509)
Income tax (benefit) expense	(170)	(411)	(390)
Net income (loss)	$ 347	$ (239)	$ (119)
Net income (loss) per common share — basic	$ 0.26	$ (0.18)	$ (0.09)
Net income (loss) per common share — assuming dilution	$ 0.25	$ (0.18)	$ (0.09)
Weighted-average shares outstanding
Basic	1,357.6	1,341.2	1,324.3
Assuming dilution	1,377.2	1,341.2	1,324.3