Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Net sales	$ 3,026	$ 2,752
Cost of products sold	955	894
Gross profit	2,071	1,858
Operating expenses:
Selling, general and administrative expenses	1,060	1,019
Research and development expenses	319	276
Royalty expense	12	12
Amortization expense	198	185
Contingent consideration net expense (benefit)	12	(6)
Restructuring net charges (credits)	4	5
Litigation-related net charges (credits)	0	4
Gain on disposal of businesses and assets	0	(6)
Operating expenses	1,605	1,488
Operating income (loss)	466	370
Other income (expense):
Interest expense	(279)	(82)
Other, net	(31)	37
Income (loss) before income taxes	156	325
Income tax expense (benefit)	45	(16)
Net income (loss)	110	341
Preferred stock dividends	(14)	(14)
Net income (loss) available to common stockholders	$ 97	$ 327
Net income (loss) per common share — basic	$ 0.07	$ 0.23
Net income (loss) per common share — assuming dilution	$ 0.07	$ 0.23
Weighted-average shares outstanding
Basic	1,427.8	1,418.7
Assuming dilution	1,438.4	1,430.8