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Share Based Compensation Arrangement by Share Based Payment Award Compensation Costs Recognition Period

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Share Based Compensation Arrangement By Share Based Payment Award Number Of Equity Incentive Plans

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- Definition

Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Types of Option Grants

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Performance Measurements

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Plans Adopted

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Stock-based compensation expense, estimated expected forfeitures

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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-Publisher FASB

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Share-Based Compensation - Additional Information (Detail) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Sep. 26, 2015 USD ($) tranche $ / shares shares	Sep. 27, 2014 $ / shares	Sep. 26, 2015 USD ($) shares equity_plan tranche option_plan performance_measure $ / shares	Sep. 27, 2014 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity plans \| equity_plan			2
Number of share option grant types \| option_plan			2
Weighted average grant date fair value of option (in dollars per share) \| $ / shares	$ 12.01	$ 26.63	$ 14.36	$ 28.66
Estimated value of future forfeitures \| $	$ 2.2		$ 2.2
2008 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity plans adopted			1
Shares authorized for issuance (up to)	23,980,823		23,980,823
Shares available for grant	0		0
Option expiration period			10 years
2012 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (up to)	15,246,000		15,246,000
Shares available for grant	9,107,017		9,107,017
Option expiration period			7 years
Performance Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance measures \| performance_measure			2
Individual Performance Based Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			20.00%
Performance target achievement term			10 years
Individual performance vesting tranches \| tranche	5		5
Company-wide Performance Vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target achievement term			10 years
Time Based Option Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			4 years
Restricted Shares and Restricted Share Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			3 years
Restricted Shares and Restricted Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			4 years
Restricted Share Units \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			1 year
Restricted Share Units \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			4 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			3 years
Expense related to grants recognizable period			3 years
Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			0.00%
Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			150.00%