Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net sales	$ 7,477	$ 7,380	$ 7,143
Cost of products sold	2,173	2,210	2,174
Gross profit	5,304	5,170	4,969
Operating expenses:
Selling, general and administrative expenses	2,873	2,902	2,674
Research and development expenses	876	817	861
Royalty expense	70	111	140
Amortization expense	495	438	410
Goodwill impairment charges	0	0	423
Intangible asset impairment charges	19	195	53
Contingent consideration expense (benefit)	123	(85)	4
Restructuring charges	26	69	101
Litigation-related charges	1,105	1,036	221
Pension termination charges	44	0	0
Gain on divestiture	0	(12)	(38)
Operating expenses	5,631	5,471	4,849
Operating income (loss)	(327)	(301)	120
Other income (expense):
Interest expense	(284)	(216)	(324)
Other, net	(39)	8	(19)
Income (loss) before income taxes	(650)	(509)	(223)
Income tax (benefit) expense	(411)	(390)	(102)
Net income (loss)	$ (239)	$ (119)	$ (121)
Net income (loss) per common share — basic	$ (0.18)	$ (0.09)	$ (0.09)
Net income (loss) per common share — assuming dilution	$ (0.18)	$ (0.09)	$ (0.09)
Weighted-average shares outstanding
Basic	1,341.2	1,324.3	1,341.2
Assuming dilution	1,341.2	1,324.3	1,341.2