Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Net sales	$ 3,077	$ 2,003	$ 5,829	$ 4,546
Cost of products sold	945	791	1,839	1,596
Gross profit	2,132	1,212	3,990	2,950
Operating expenses:
Selling, general and administrative expenses	1,121	798	2,139	1,776
Research and development expenses	298	242	574	542
Royalty expense	12	8	24	20
Amortization expense	180	197	365	398
Intangible asset impairment charges	45	34	45	233
Contingent consideration net expense (benefit)	(85)	0	(91)	(108)
Restructuring net charges (credits)	3	3	8	13
Litigation-related net charges (credits)	298	0	302	0
Gain on disposal of business	(2)	0	(9)	0
Operating expenses	1,870	1,283	3,358	2,875
Operating income (loss)	262	(71)	632	75
Other income (expense):
Interest expense	(86)	(91)	(168)	(179)
Other, net	(26)	(18)	11	(54)
Income (loss) before income taxes	149	(181)	474	(159)
Income tax expense (benefit)	(37)	(33)	(53)	(22)
Net income (loss)	186	(147)	527	(137)
Preferred stock dividends	(14)	(5)	(28)	(5)
Net income (loss) available to common stockholders	$ 172	$ (153)	$ 500	$ (142)
Net income (loss) per common share — basic	$ 0.12	$ (0.11)	$ 0.35	$ (0.10)
Net income (loss) per common share — assuming dilution	$ 0.12	$ (0.11)	$ 0.35	$ (0.10)
Weighted-average shares outstanding
Basic	1,421.3	1,410.9	1,420.0	1,404.1
Assuming dilution	1,432.5	1,410.9	1,431.7	1,404.1