Options Activity and Information about Options Outstanding (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Dec. 28, 2013
Number of options
Outstanding at beginning of period	10,381,342
Granted	619,039
Exercised	(2,209,051)
Canceled/forfeited	(13,284)
Outstanding at end of period	8,778,046
Vested or expected to vest at end of period	8,426,924
Vested and exercisable at end of period	2,581,381
Weighted Average Exercise Price
Outstanding at beginning of period	$ 9.21
Granted	$ 62.58
Exercised	$ 6.13
Canceled/forfeited	$ 39.13
Outstanding at end of period	$ 13.70
Vested or expected to vest at end of period	$ 13.70
Vested and exercisable at end of period	$ 9.45
Weighted Average Remaining Contractual Live (years)
Outstanding at end of period	6 years 4 months 21 days
Vested or expected to vest at end of period	6 years 4 months 21 days
Vested and exercisable at end of period	5 years 10 months 13 days
Aggregate Intrinsic Value
Outstanding at December 28, 2013	$ 587,036
Vested and exercisable at December 28, 2013	$ 183,622