Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net sales	$ 2,659	$ 2,707	$ 7,204	$ 7,831
Cost of products sold	869	777	2,465	2,265
Gross profit	1,790	1,930	4,740	5,566
Operating expenses:
Selling, general and administrative expenses	984	1,012	2,760	2,849
Research and development expenses	315	306	857	866
Royalty expense	12	15	32	48
Amortization expense	197	178	595	498
Intangible asset impairment charges	219	0	452	105
Contingent consideration expense (benefit)	6	8	(102)	(9)
Restructuring charges (credits)	3	3	16	10
Litigation-related net charges (credits)	260	25	260	(108)
Operating expenses	1,995	1,547	4,870	4,258
Operating income (loss)	(205)	383	(130)	1,308
Other income (expense):
Interest expense	(86)	(95)	(265)	(294)
Other, net	64	(197)	9	(322)
Income (loss) before income taxes	(227)	91	(386)	693
Income tax expense (benefit)	(72)	(35)	(94)	(11)
Net income (loss)	(155)	126	(292)	704
Preferred stock dividends	(14)	0	(19)	0
Net income (loss) available to common stockholders	$ (169)	$ 126	$ (311)	$ 704
Net income (loss) per common share — basic	$ (0.12)	$ 0.09	$ (0.22)	$ 0.51
Net income (loss) per common share — assuming dilution	$ (0.12)	$ 0.09	$ (0.22)	$ 0.50
Weighted-average shares outstanding
Basic	1,430.9	1,393.1	1,413.0	1,390.6
Assuming dilution	1,430.9	1,412.2	1,413.0	1,409.7