Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Product sales	$ 5,001	$ 6,377
Royalty, contract and other revenues	87	128
Total revenues	5,088	6,505
Costs and expenses:
Cost of goods sold	1,001	957
Research and development expenses	937	931
Selling, general and administrative expenses	997	850
Total costs and expenses	2,935	2,738
Income from operations	2,153	3,767
Interest expense	(290)	(261)
Other income (expense), net	170	111
Income before provision for income taxes	2,033	3,617
Provision for income taxes	494	918
Net income	1,539	2,699
Net income (loss) attributable to noncontrolling interest	1	(3)
Net income attributable to Gilead	$ 1,538	$ 2,702
Net income per share attributable to Gilead common stockholders - basic (usd per share)	$ 1.18	$ 2.07
Shares used in per share calculation - basic (in shares)	1,307	1,308
Net income per share attributable to Gilead common stockholders - diluted (usd per share)	$ 1.17	$ 2.05
Shares used in per share calculation - diluted (in shares)	1,320	1,320
Cash dividends declared (usd per share)	$ 0.57	$ 0.52