Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Total revenues	$ 6,161	$ 5,557
Operating expenses:
Cost of sales	1,513	1,055
Research and development	952	879
Selling, general and administrative	1,316	1,154
Other	25	(3)
Total operating expenses	3,806	3,085
Operating income	2,355	2,472
Interest expense, net	346	343
Interest and other income, net	11	185
Income before income taxes	2,020	2,314
Provision for income taxes	195	322
Net income	$ 1,825	$ 1,992
Earnings per share:
Basic (in usd per share)	$ 3.09	$ 3.20
Diluted (in usd per share)	$ 3.07	$ 3.18
Shares used in calculation of earnings per share:
Basic (in shares)	590	622
Diluted (in shares)	594	626
Product sales [Member]
Revenues:
Product sales	$ 5,894	$ 5,286
Other revenues [Member]
Revenues:
Total revenues	$ 267	$ 271