Accrued deductions for purchase of shares.

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- Definition

Employee purchase price per share fair market value.

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No definition available.

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- Definition

Employee stock purchase plan share purchase date.

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- Definition

Number of shares purchased by employees.

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- Definition

Outstanding and available for Issuance.

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No definition available.

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- Definition

Participants options to purchase shares at a percentage of the market price of the stock.

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Plan expiration date.

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- Definition

Share based compensation arrangement by share based payment award equity instruments other than options percentage of target number of shares paid out.

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No definition available.

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- Definition

Shares reserved for issuance under share save scheme.

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No definition available.

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- Definition

The term of options.

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No definition available.

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- Definition

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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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

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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- Definition

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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- Definition

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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- Definition

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).

+ References

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- Definition

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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No definition available.

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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

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

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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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- Definition

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

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- Definition

Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest options outstanding. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

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

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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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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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No definition available.

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- Definition

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

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

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Employee Stock Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 30, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation	$ 9,514	$ 9,323	$ 13,986
Income tax benefit recognized	$ 1,500	$ 2,300	$ 3,600
Weighted-average grant date fair value of options granted	$ 30.80	$ 32.72
Number of options exercised	27,413	492,968	112,790
Weighted average exercise price of options exercised	$ 58.69	$ 51.70	$ 48.61
Aggregate intrinsic value of option shares outstanding	$ 15,700
Aggregate intrinsic value of option shares exercisable	$ 10,600
Number of option shares vested or expected to vest	1,200,000
Option shares vested or expected to vest aggregate intrinsic value	$ 15,700
Weighted average exercise price of option shares vested or expected to vest	$ 81.33
Weighted average remaining contractual term of option shares vested or expected to vest, years	6 years
Weighted average remaining contractual term of option shares currently exercisable	4 years 6 months
Total unrecognized compensation expense for options	$ 6,300
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Award period	10 years
Award period end date	Mar. 05, 2023
Vesting period	4 years
Unrecognized compensation expense will be recognized over a weighted average period, years	2 years
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Unrecognized compensation expense will be recognized over a weighted average period, years	1 year 10 months 24 days
Granted	45,985	37,100	37,000
Total unrecognized compensation expense for options	$ 3,400
Performance Share Plan Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	33,700	43,650	56,275
Performance period	3 years
Performance Share Plan Shares \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the target number of shares paid out	0.00%
Performance Share Plan Shares \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of the target number of shares paid out	300.00%
Employee Share-save Scheme
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Accrued deductions for purchase of shares	$ 400
Share purchase date	Dec. 15, 2018
Discount rate of market value on purchase date	95.00%
The term of options, years	3 years
Common stock reserved for issuance, shares	128,110
Remaining shares available for issuance	438,111
Number of options granted	20,981	11,338	70,673
Weighted-average grant date fair value of options granted	$ 68.83
Number of options exercised	609
Weighted average exercise price of options exercised	$ 60.65
Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Remaining shares available for issuance	2,119,505
Shares reserved for issuance to officers and key employees	3,539,345
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Purchase price fair market value percentage	95.00%
Number of shares purchased by employees	20,340
Employees purchase price per share fair market value	$ 73.81