Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Total revenues	$ 6,059	$ 5,810	$ 11,613	$ 11,274
Operating expenses:
Cost of sales	1,024	1,024	1,968	2,020
Research and development	869	873	1,629	1,642
Selling, general and administrative	1,353	1,209	2,480	2,273
Other	(19)	6	(22)	50
Total operating expenses	3,227	3,112	6,055	5,985
Operating income	2,832	2,698	5,558	5,289
Interest expense, net	347	321	685	647
Interest and other income, net	162	165	393	360
Income before income taxes	2,647	2,542	5,266	5,002
Provision for income taxes	351	391	659	780
Net income	$ 2,296	$ 2,151	$ 4,607	$ 4,222
Earnings per share:
Basic (in usd per share)	$ 3.50	$ 2.93	$ 6.76	$ 5.74
Diluted (in usd per share)	$ 3.48	$ 2.91	$ 6.73	$ 5.71
Shares used in calculation of earnings per share:
Basic (in shares)	656	734	682	736
Diluted (in shares)	660	738	685	740
Dividends paid per share (in usd per share)	$ 1.32	$ 1.15	$ 2.64	$ 2.3
Product sales [Member]
Revenues:
Product sales	$ 5,679	$ 5,574	$ 11,022	$ 10,773
Other revenues [Member]
Revenues:
Total revenues	$ 380	$ 236	$ 591	$ 501