Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net sales	$ 2,932	$ 2,659	$ 8,761	$ 7,204
Cost of products sold	900	869	2,739	2,465
Gross profit	2,032	1,790	6,022	4,740
Operating expenses:
Selling, general and administrative expenses	1,066	984	3,206	2,760
Research and development expenses	310	315	884	857
Royalty expense	14	12	38	32
Amortization expense	184	197	549	595
Intangible asset impairment charges	128	219	173	452
Contingent consideration net expense (benefit)	(26)	6	(117)	(102)
Restructuring net charges (credits)	9	3	18	16
Litigation-related net charges (credits)	0	260	302	260
Gain on disposal of businesses and assets	(40)	0	(48)	0
Operating expenses	1,645	1,995	5,003	4,870
Operating income (loss)	387	(205)	1,019	(130)
Other income (expense):
Interest expense	(86)	(86)	(254)	(265)
Other, net	181	64	192	9
Income (loss) before income taxes	483	(227)	957	(386)
Income tax expense (benefit)	64	(72)	10	(94)
Net income (loss)	419	(155)	946	(292)
Preferred stock dividends	(14)	(14)	(42)	(19)
Net income (loss) available to common stockholders	$ 405	$ (169)	$ 905	$ (311)
Net income (loss) per common share — basic	$ 0.28	$ (0.12)	$ 0.64	$ (0.22)
Net income (loss) per common share — assuming dilution	$ 0.28	$ (0.12)	$ 0.63	$ (0.22)
Weighted-average shares outstanding
Basic	1,423.8	1,430.9	1,421.3	1,413.0
Assuming dilution	1,435.6	1,430.9	1,433.0	1,413.0