Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net sales	$ 2,490	$ 2,257	$ 4,870	$ 4,418
Cost of products sold	739	632	1,411	1,282
Gross profit	1,751	1,625	3,458	3,136
Operating expenses:
Selling, general and administrative expenses	886	815	1,746	1,609
Research and development expenses	275	244	536	480
Royalty expense	17	17	35	34
Amortization expense	147	142	288	285
Intangible asset impairment charges	34	0	35	0
Contingent consideration expense (benefit)	(4)	(24)	1	(74)
Restructuring charges (credits)	5	1	18	5
Litigation-related net charges (credits)	0	205	0	208
Operating expenses	1,359	1,400	2,659	2,547
Operating income (loss)	392	225	799	589
Other income (expense):
Interest expense	(57)	(58)	(119)	(115)
Other, net	12	(76)	(11)	(78)
Income (loss) before income taxes	347	91	670	396
Income tax expense (benefit)	(209)	(55)	(183)	(40)
Net income (loss)	$ 555	$ 146	$ 853	$ 436
Net income (loss) per common share — basic	$ 0.40	$ 0.11	$ 0.62	$ 0.32
Net income (loss) per common share — assuming dilution	$ 0.40	$ 0.11	$ 0.61	$ 0.31
Weighted-average shares outstanding
Basic	1,380.5	1,369.8	1,378.5	1,367.6
Assuming dilution	1,398.9	1,391.1	1,397.8	1,390.6