Option Activity and Information about Options Outstanding (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jun. 28, 2014
Number of options
Outstanding at beginning of period	8,377,928
Granted	574,139
Exercised	(694,313)
Canceled/forfeited	(101,776)
Outstanding at end of period	8,155,978
Vested or expected to vest at end of period	7,992,858
Vested and exercisable at end of period	3,820,936
Weighted Average Exercise Price
Outstanding at beginning of period	$ 13.69
Granted	$ 94.44
Exercised	$ 7.45
Canceled/forfeited	$ 28.38
Outstanding at end of period	$ 19.71
Vested or expected to vest at end of period	$ 19.71
Vested and exercisable at end of period	$ 9.79
Weighted Average Remaining Contractual Life (years)
Outstanding at end of period	6 years 29 days
Vested or expected to vest at end of period	6 years 29 days
Vested and exercisable at end of period	5 years 10 months 6 days
Aggregate Intrinsic Value
Outstanding at June 28, 2014	$ 575,802
Vested and exercisable at June 28, 2014	$ 306,474