Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Product sales	$ 7,651	$ 8,126	$ 15,332	$ 15,531
Royalty, contract and other revenues	125	118	238	307
Total revenues	7,776	8,244	15,570	15,838
Costs and expenses:
Cost of goods sold	864	998	2,057	1,880
Research and development expenses	1,484	818	2,749	1,514
Selling, general and administrative expenses	890	812	1,575	1,457
Total costs and expenses	3,238	2,628	6,381	4,851
Income from operations	4,538	5,616	9,189	10,987
Interest expense	(227)	(140)	(457)	(293)
Other income (expense), net	88	35	169	56
Income before provision for income taxes	4,399	5,511	8,901	10,750
Provision for income taxes	902	1,014	1,837	1,921
Net income	3,497	4,497	7,064	8,829
Net income attributable to noncontrolling interest	0	5	1	4
Net income attributable to Gilead	$ 3,497	$ 4,492	$ 7,063	$ 8,825
Net income per share attributable to Gilead common stockholders - basic (in dollars per share)	$ 2.62	$ 3.05	$ 5.20	$ 5.96
Shares used in per share calculation - basic (in shares)	1,335	1,472	1,359	1,480
Net income per share attributable to Gilead common stockholders - diluted (in dollars per share)	$ 2.58	$ 2.92	$ 5.11	$ 5.68
Shares used in per share calculation - diluted (in shares)	1,355	1,540	1,383	1,555
Cash dividends declared (in dollars per share)	$ 0.47	$ 0.43	$ 0.9	$ 0.43