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Options Activity and Information about Options Outstanding (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Mar. 30, 2013
Number of options  
Outstanding at beginning of period 19,542,400
Granted 55,248
Exercised (8,704,477)
Canceled/forfeited (511,829)
Outstanding at end of period 10,381,342
Vested or expected to vest at end of period 9,716,968
Vested and exercisable at end of period 2,057,884
Weighted Average Exercise Price  
Outstanding at beginning of period $ 6.59
Granted $ 50.15
Exercised $ 3.50
Canceled/forfeited $ 10.77
Outstanding at end of period $ 9.21
Vested or expected to vest at end of period $ 9.21
Vested and exercisable at end of period $ 7.91
Weighted Average Remaining Contractual Live (years)  
Outstanding at end of period 7 years 1 month 17 days
Vested or expected to vest at end of period 7 years 1 month 10 days
Vested and exercisable at end of period 6 years 1 month 21 days
Aggregate Intrinsic Value  
Outstanding at March 30, 2013 $ 493,945
Vested or expected to vest at March 30, 2013 461,486
Vested and exercisable at March 30, 2013 $ 100,587