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Share-Based Compensation - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 27, 2014 EquityPlan	Sep. 28, 2013	Sep. 27, 2014 OptionPlan	Sep. 28, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity plans	2
Number of stock option grants			2
Outstanding option non-vested	4,445,083		4,445,083
Outstanding option vested			3,388,805
Intrinsic value of option exercised			$ 91.9	$ 128.5
Cash received from options exercised			8.1	13.0
Unrecognized stock based compensation expense	39.1		39.1
Weighted average period of recognition			3 years
Weighted average grant date fair value of option	$ 26.63	$ 27.46	$ 28.66	$ 24.93
Equity compensation expense	13.4	7.6	21.6	13.1
Estimated value of future forfeitures	1.6		1.6
Individual Performance Based Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage on achievement of individual performance			20.00%
Performance target achievement term			10 years
Individual performance vesting tranches	5		5
Company Wide Performance Based Stock Option
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]
Number of installments for vesting period on each of the first, second, third and fourth anniversaries date of award			4
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments for vesting period on each of the first, second, third and fourth anniversaries date of award			4
Weighted average period of recognition			3 years 2 months 5 days
Fair value of restricted shares vested during a period			5.8	0.1
Unrecognized stock based compensation expense	47.0		47.0
Restricted Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			3 years
Restricted Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period			4 years
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of recognition			2 years 3 months 7 days
Unrecognized stock based compensation expense	$ 21.4		$ 21.4
Restricted Stock Units Performance Vesting
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
Stock Option Plan 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized for issuance	23,980,823		23,980,823
Expiration period	10 years
Omnibus Incentive Plan, Twenty Twelve
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized for issuance	15,246,000		15,246,000
Shares available for grant	10,701,997		10,701,997
Expiration period	7 years

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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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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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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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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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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Number of non-vested options outstanding.

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