CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Millions, except Share data, unless otherwise specified	Total	Convertible Preferred Stock	Convertible Preferred Stock Series A Preferred Stock	Convertible Preferred Stock Series B - C Preferred Stock	Convertible Preferred Stock Series A - E Preferred Stock	Class A and Class B Common Stock	Class A and Class B Common Stock Series A Preferred Stock	Class A and Class B Common Stock Series B - C Preferred Stock	Class A and Class B Common Stock Series A - E Preferred Stock	Additional Paid-In Capital	Additional Paid-In Capital Series A Preferred Stock	Additional Paid-In Capital Series B - C Preferred Stock	Additional Paid-In Capital Series A - E Preferred Stock	Accumulated Other Comprehensive (Loss) Income	Retained Earnings	Total Stockholders’ Equity	Total Stockholders’ Equity Series A Preferred Stock	Total Stockholders’ Equity Series B - C Preferred Stock	Total Stockholders’ Equity Series A - E Preferred Stock
Common stock, value, outstanding beginning at Dec. 31, 2009						$ 0
Convertible preferred stock, value, outstanding beginning at Dec. 31, 2009		615
Total Stockholders' Equity, beginning at Dec. 31, 2009										253				0	0	868
Convertible preferred stock, shares, outstanding beginning at Dec. 31, 2009		543,000,000
Common stock, shares outstanding beginning at Dec. 31, 2009						1,070,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs, shares						24,000,000
Issuance of common stock, net of issuance costs, value						0				500						500
Issuance of common stock for cash upon exercise of stock options, shares						70,000,000
Issuance of common stock for cash upon exercise of stock options, value						0				6						6
Issuance of common stock related to acquisitions, shares						6,000,000
Issuance of common stock related to acquisitions, value						0				60						60
Conversion of stock into common stock			(2,000,000)
Conversion of stock, amount converted			0
Conversion of stock, shares							2,000,000
Conversion of stock, value							0				0						0
Reclassification of option liability to additional paid-in capital										3						3
Share-based compensation, related to employee share-based awards										17						17
Share-based compensation, related to nonemployee share-based awards										1						1
Excess tax benefit from share-based award activity, net of deferred tax impact										107						107
Other comprehensive income														(6)		(6)
Net income	606														606	606
Total Stockholders' Equity, ending at Dec. 31, 2010										947				(6)	606	2,162
Common stock, value, outstanding ending at Dec. 31, 2010						0
Common stock, shares outstanding ending at Dec. 31, 2010						1,172,000,000
Convertible preferred stock, value, outstanding beginning at Dec. 31, 2010		615
Convertible preferred stock, shares, outstanding beginning at Dec. 31, 2010		541,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs, shares						48,000,000
Issuance of common stock, net of issuance costs, value						0				998						998
Issuance of common stock for cash upon exercise of stock options, shares						102,000,000
Issuance of common stock for cash upon exercise of stock options, value						0				28						28
Issuance of common stock related to nonemployees for past services, shares						0
Issuance of common stock related to nonemployees for past services, value						0				3						3
Issuance of common stock related to acquisitions, shares						2,000,000
Issuance of common stock related to acquisitions, value						0				58						58
Exercise of stock warrants		8,000,000
Exercise of stock warrants, shares	0	0
Conversion of stock into common stock				(6,000,000)
Conversion of stock, amount converted				0
Conversion of stock, shares								6,000,000
Conversion of stock, value								0				0						0
Share-based compensation, related to employee share-based awards										217						217
Excess tax benefit from share-based award activity, net of deferred tax impact										433						433
Net income	1,000														1,000	1,000
Common stock, value, outstanding ending at Dec. 31, 2011						0
Convertible preferred stock, value, outstanding ending at Dec. 31, 2011		615
Total Stockholders' Equity, ending at Dec. 31, 2011	4,899									2,684				(6)	1,606	4,899
Convertible preferred stock, shares, outstanding ending at Dec. 31, 2011		543,000,000
Common stock, shares outstanding ending at Dec. 31, 2011						1,330,000,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of issuance costs, shares						180,000,000
Issuance of common stock, net of issuance costs, value						0				6,760						6,760
Issuance of common stock for cash upon exercise of stock options, shares	135,505,000					135,000,000
Issuance of common stock for cash upon exercise of stock options, value						0				17						17
Issuance of common stock related to nonemployees for past services, shares						0
Issuance of common stock related to nonemployees for past services, value						0				1						1
Issuance of common stock related to acquisitions, shares						26,000,000
Issuance of common stock related to acquisitions, value						0				274						274
Issuance of common stock settlement of restricted stock units (RSUs)	279,000,000					279,000,000
Shares withheld related to net share settlement of RSUs, shares	(123,000,000)					(123,000,000)
Shares withheld related to net share settlement of RSUs, value	2,862									(2,862)						(2,862)
Conversion of stock into common stock					(543,000,000)
Conversion of stock, amount converted					(615)
Conversion of stock, shares									545,000,000
Conversion of stock, value									0				615						0
Share-based compensation, related to employee share-based awards										1,572						1,572
Excess tax benefit from share-based award activity, net of deferred tax impact										1,033						1,033
Other comprehensive income														8		8
Net income	53														53	53
Common stock, value, outstanding ending at Dec. 31, 2012						0
Convertible preferred stock, value, outstanding ending at Dec. 31, 2012		0
Total Stockholders' Equity, ending at Dec. 31, 2012	$ 11,755									$ 10,094				$ 2	$ 1,659	$ 11,755
Convertible preferred stock, shares, outstanding ending at Dec. 31, 2012		0
Common stock, shares outstanding ending at Dec. 31, 2012						2,372,000,000