Option Activity and Information about Options Outstanding (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Mar. 28, 2015
Number of options
Outstanding at beginning of period	8,377,928
Granted	810,063
Exercised	(1,782,246)
Canceled/forfeited	(218,742)
Outstanding at end of period	7,187,003
Vested or expected to vest at end of period	7,102,610
Vested and exercisable at end of period	3,365,746
Weighted Average Exercise Price
Outstanding at beginning of period	$ 13.69
Granted	$ 90.56
Exercised	$ 8.69
Canceled/forfeited	$ 28.05
Outstanding at end of period	$ 23.14
Vested or expected to vest at end of period	$ 23.14
Vested and exercisable at end of period	$ 12.61
Weighted Average Remaining Contractual Life (years)
Outstanding at end of period	5 years 4 months 13 days
Vested or expected to vest at end of period	5 years 4 months 13 days
Vested and exercisable at end of period	4 years 10 months 21 days
Aggregate Intrinsic Value
Outstanding at March 28, 2015	$ 333,870
Vested and exercisable at March 28, 2015	$ 182,984