Number Of Shares For Which Fair Value Is Estimated Using Monte Carlo Simulation Technique

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Number of tranches.

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Number of options exchanged for restricted stock and new options.

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Term of repurchase right on retirement or termination of employment.

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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 number of common shares reserved for future issuance.

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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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Unrecognized cost of unvested options awarded to employees as compensation.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

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No definition available.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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.

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General descriptive information regarding an arrangement under which employees and directors receive: (a) awards of equity shares, equity share options, or other equity instruments; or (b) the entity incurs liabilities to them: (1) in amounts based, at least in part, on the price of the entity's shares or other equity instruments; or (2) that require or may require settlement by issuance of the entity's shares. Such an arrangement is usually provided to employees and directors to compensate them, provide performance incentives to them, and to attract or retain their services. May also include pertinent information particular to a plan that is not elsewhere specified in the taxonomy.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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 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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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

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No definition available.

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Percentage of vesting of share-based compensation awards.

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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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Stock-based Compensation - Additional Information (Detail) $ in Millions				12 Months Ended
	Aug. 09, 2016 shares	Sep. 30, 2015 shares	Jul. 30, 2015	Jul. 02, 2016 USD ($) Tranche shares	Jun. 27, 2015 USD ($)	Jun. 28, 2014 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield				0.00%
Stock compensation expense \| $				$ 17.2	$ 1.2	$ 0.7
Income tax benefit \| $				$ 46.2	40.1	14.7
2007 Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance \| shares				6,445,982
Contractual term of options granted				10 years
Number of shares available for grant \| shares				433,762
Number of Tranches \| Tranche				3
Term of repurchase right following a participants retirement or termination of employment				1 year
Requisite service period				10 years 8 months 12 days
Award vesting period				5 years
Share-based compensation arrangement by share-based payment award accelerated compensation cost \| $				$ 3.8
Share-based compensation, options exchanged \| shares		3,730,000		3,727,518
Options approved for grant \| shares		1,460,000		134,042
Unrecognized compensation cost \| $				$ 45.0
Stock compensation expense \| $				8.4
Stock compensation expense \| $				13.2	1.0	0.7
Unrecognized compensation cost \| $				18.8
Income tax benefit \| $				$ 5.1	$ 0.4	$ 0.3
Compensation expense, period for recognition				2 years 8 months 12 days
Number exercisable options \| shares				1,589,483
2007 Option Plan [Member] \| To Be Recognized in the Next 3 Years [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost \| $				$ 18.0
2007 Option Plan [Member] \| To Be Recognized When Probable [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost \| $				$ 18.6
2007 Option Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock approved for grant \| shares		2,270,000
2007 Option Plan [Member] \| Time Based Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation arrangement by Share-based payment award, annual award vesting rights			20.00%
2007 Option Plan [Member] \| Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield				0.00%	4.13%	4.88%
2007 Option Plan [Member] \| Tranche Two and Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield				0.00%
2007 Option Plan [Member] \| Tranche Two and Three [Member] \| Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield				0.00%
2015 Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance \| shares				4,850,000
Contractual term of options granted				10 years
Number of shares available for grant \| shares				3,798,501
Restricted stock approved for grant \| shares				694,297
Options approved for grant \| shares				145,848
Unrecognized compensation cost \| $				$ 13.5
Stock compensation expense \| $				4.0	$ 0.2
Income tax benefit \| $				$ 1.6	$ 0.1
Compensation expense, period for recognition				2 years 10 months 24 days
Number exercisable options \| shares				0
Fair value of shares vested \| $				$ 0.6
2015 Incentive Plan [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of which fair value is estimated using Monte Carlo simulation technique \| shares				70,361
2015 Incentive Plan [Member] \| Restricted Stock [Member] \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock approved for grant \| shares	500,000
2015 Incentive Plan [Member] \| Options and Service-based restricted shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period				4 years
2015 Incentive Plan [Member] \| Performance-based Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period				3 years
Award description				Performance-based restricted shares vest upon the achievement of a specified Return on Invested Capital ("ROIC"), a performance condition, and a specified Relative Total Shareholder Return ("Relative TSR"), a market condition, at the end of a three year performance period.
2015 Incentive Plan [Member] \| Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield				0.00%
2015 Incentive Plan [Member] \| Options \| Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options approved for grant \| shares	400,000
2015 Incentive Plan [Member] \| Performance relative to the ROIC and Relative TSR goals \| Performance-based Restricted Shares \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation arrangement by Share-based payment award, annual award vesting rights				0.00%
2015 Incentive Plan [Member] \| Performance relative to the ROIC and Relative TSR goals \| Performance-based Restricted Shares \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation arrangement by Share-based payment award, annual award vesting rights				150.00%