Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net sales	$ 2,003	$ 2,631	$ 4,546	$ 5,124
Cost of products sold	791	758	1,596	1,488
Gross profit	1,212	1,873	2,950	3,636
Operating expenses:
Selling, general and administrative expenses	798	968	1,776	1,837
Research and development expenses	242	280	542	559
Royalty expense	8	17	20	32
Amortization expense	197	161	398	321
Intangible asset impairment charges	34	37	233	105
Contingent consideration expense (benefit)	0	10	(108)	(18)
Restructuring charges (credits)	3	1	13	7
Litigation-related net charges (credits)	0	15	0	(133)
Operating expenses	1,283	1,489	2,875	2,711
Operating income (loss)	(71)	384	75	925
Other income (expense):
Interest expense	(91)	(89)	(179)	(198)
Other, net	(18)	(150)	(54)	(125)
Income (loss) before income taxes	(181)	145	(159)	602
Income tax expense (benefit)	(33)	(9)	(22)	24
Net income (loss)	(147)	154	(137)	578
Preferred stock dividends	(5)	0	(5)	0
Net income (loss) available to common stockholders	$ (153)	$ 154	$ (142)	$ 578
Net income (loss) per common share — basic	$ (0.11)	$ 0.11	$ (0.10)	$ 0.42
Net income (loss) per common share — assuming dilution	$ (0.11)	$ 0.11	$ (0.10)	$ 0.41
Weighted-average shares outstanding
Basic	1,410.9	1,391.0	1,404.1	1,389.4
Assuming dilution	1,410.9	1,408.6	1,404.1	1,408.5