CONSOLIDATED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenue	$ 5,089	$ 3,711	$ 1,974
Costs and expenses:
Cost of revenue	1,364	860	493
Research and development	1,399	388	144
Marketing and sales	896	393	167
General and administrative	892	314	138
Total costs and expenses	4,551	1,955	942
Income from operations	538	1,756	1,032
Interest and other income (expense), net:
Interest expense	(51)	(42)	(22)
Other income (expense), net	7	(19)	(2)
Income before provision for income taxes	494	1,695	1,008
Provision for income taxes	441	695	402
Net income	53	1,000	606
Less: Net income attributable to participating securities	21	332	234
Net income attributable to Class A and Class B common stockholders	32	668	372
Earnings per share attributable to Class A and Class B common stockholders:
Basic	$ 0.02	$ 0.52	$ 0.34
Diluted	$ 0.01	$ 0.46	$ 0.28
Weighted average shares used to compute earnings per share attributable to Class A and Class B common stockholders:
Basic	2,006	1,294	1,107
Diluted	2,166	1,508	1,414
Share-based compensation expense included in costs and expenses:
Share-based compensation expense	1,572	217	20
Cost of revenue
Share-based compensation expense included in costs and expenses:
Share-based compensation expense	88	9	0
Research and development
Share-based compensation expense included in costs and expenses:
Share-based compensation expense	843	114	9
Marketing and sales
Share-based compensation expense included in costs and expenses:
Share-based compensation expense	306	37	2
General and administrative
Share-based compensation expense included in costs and expenses:
Share-based compensation expense	$ 335	$ 57	$ 9