Options Activity and Information about Options Outstanding (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Jun. 29, 2013
Number of options
Outstanding at beginning of period	10,381,342
Granted	598,903
Exercised	(1,118,416)
Canceled/forfeited	(2,507)
Outstanding at end of period	9,859,322
Vested or expected to vest at end of period	9,464,949
Vested and exercisable at end of period	3,228,969
Weighted Average Exercise Price
Outstanding at beginning of period	$ 9.21
Granted	$ 62.24
Exercised	$ 5.73
Canceled/forfeited	$ 62.24
Outstanding at end of period	$ 12.81
Vested or expected to vest at end of period	$ 12.81
Vested and exercisable at end of period	$ 6.91
Weighted Average Remaining Contractual Live (years)
Outstanding at end of period	6 years 11 months 1 day
Vested or expected to vest at end of period	6 years 11 months 1 day
Vested and exercisable at end of period	6 years 8 months 9 days
Aggregate Intrinsic Value
Outstanding at June 29, 2013	$ 485,285
Vested and exercisable at June 29, 2013	$ 177,944

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of fully vested and expected to vest options that are exercisable.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Weighted average remaining contractual term for fully vested and expected to vest options that are exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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As of the balance sheet date, the number of shares into which fully vested and expected to vest stock options outstanding can be converted under the option plan.

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As of the balance sheet date, the weighted-average exercise price for outstanding stock options that are fully vested or expected to vest.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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