Equity Award Plans - Schedule of Activity for Share Available of Grant and Options Outstanding (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Beginning balance, options outstanding (shares)		27,422,000
Options granted (shares)		667,000
Options exercised (shares)	(796,846)	(4,165,000)
Options cancelled (shares)		(670,000)
Options assumed in acquisition (in shares)		63,000
Ending balance, options outstanding (shares)		23,317,000	27,422,000
Option vested and expected to vest (shares)		22,591,000
Option exercisable (shares)		8,437,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Beginning balance, weighted average exercise price (usd per share)		$ 5.82
Options granted, weighted average exercise price (usd per share)		$ 73.14
Options exercised, weighted average exercise price (usd per share)		$ 2.39
Options cancelled, weighted average exercise price (usd per share)		$ 8.18
Options assumed, weighted average exercise price (usd per share)		$ 18.35
Ending balance, weighted average exercise price (usd per share)		$ 8.33	$ 5.82
Option vested and expected to vest, weighted average exercise price (usd per share)		$ 8.18
Option exercisable, weighted average exercise price (usd per share)		$ 3.07
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options weighted-average grant date fair value per share		$ 73.14
Beginning balance, options outstanding, weighted average contractual life		7 years 11 months 12 days	8 years 3 months 18 days
Ending balance, options outstanding, weighted average contractual life		7 years 11 months 12 days	8 years 3 months 18 days
Option vested and expected to vest, weighted average contractual life		7 years 11 months 1 day
Option exercisable, weighted average contractual life		6 years 9 months 22 days
Beginning balance, options outstanding, aggregate intrinsic value		$ 1,036,224
Aggregate intrinsic value of options exercised		176,702
Ending balance, options outstanding, aggregate intrinsic value		773,148	1,036,224
Option vested and expected to vest, aggregate intrinsic value		751,732
Option exercisable, aggregate intrinsic value		$ 316,243