Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net sales	$ 2,707	$ 2,393	$ 7,831	$ 7,262
Cost of products sold	777	672	2,265	2,084
Gross profit	1,930	1,720	5,566	5,179
Operating expenses:
Selling, general and administrative expenses	1,012	870	2,849	2,616
Research and development expenses	306	289	866	825
Royalty expense	15	17	48	52
Amortization expense	178	148	498	437
Intangible asset impairment charges	0	0	105	35
Contingent consideration expense (benefit)	8	(13)	(9)	(12)
Restructuring charges (credits)	3	3	10	20
Litigation-related net charges (credits)	25	18	(108)	18
Operating expenses	1,547	1,333	4,258	3,992
Operating income (loss)	383	388	1,308	1,187
Other income (expense):
Interest expense	(95)	(58)	(294)	(177)
Other, net	(197)	126	(322)	116
Income (loss) before income taxes	91	456	693	1,126
Income tax expense (benefit)	(35)	24	(11)	(159)
Net income (loss)	$ 126	$ 432	$ 704	$ 1,285
Net income (loss) per common share — basic	$ 0.09	$ 0.31	$ 0.51	$ 0.93
Net income (loss) per common share — assuming dilution	$ 0.09	$ 0.31	$ 0.50	$ 0.92
Weighted-average shares outstanding
Basic	1,393.1	1,382.8	1,390.6	1,380.0
Assuming dilution	1,412.2	1,403.9	1,409.7	1,399.8