Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 2,677	$ 2,475
Cost of sales	1,563	1,431
Gross margin	1,114	1,044
Marketing and administrative expenses	622	564
Research and development expenses	140	127
Claris settlement	(80)
Operating income	432	353
Net interest expense	12	14
Other (income) expense, net	(18)	11
Income from continuing operations before income taxes	438	328
Income tax expense	49	55
Income from continuing operations	389	273
Loss from discontinued operations, net of tax		(1)
Net income	$ 389	$ 272
Income from continuing operations per common share
Basic	$ 0.72	$ 0.50
Diluted	0.71	0.50
Loss from discontinued operations per common share
Diluted		(0.01)
Net income per common share
Basic	0.72	0.50
Diluted	$ 0.71	$ 0.49
Weighted-average number of common shares outstanding
Basic	539	541
Diluted	551	551
Cash dividends declared per common share	$ 0.160	$ 0.130