Share-based Compensation Arrangement by Share-based Payment Award, Annual Long-term Cash Awards Authorized per Employee

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Annual Vesting Installments

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Payout, Average Economic Return Threshold, Percent

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Share-based Compensation Arrangement by Share-based Payment Award, Payout, Percent of Shares Granted

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Share-based Compensation Arrangement by Share-based Payment Award, Payout, Total Shareholder Return Threshold, Percent

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- Definition

Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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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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Amount of contributions made by employer into fund established for purposes of making future disbursement to individual in accordance with deferred compensation arrangement.

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Amount of distribution made to individual in accordance with deferred compensation arrangement.

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Maximum term of the deferred compensation arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The carrying amount of the liability as of the balance sheet date to an individual under a deferred compensation arrangement. This amount may be the result of periodic accruals made over the period of active employment, or reflect termination benefits resulting contractual terms or a death benefit.

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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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Amount of cost for defined contribution plan.

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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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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

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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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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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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- Definition

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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- Definition

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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- 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

Number of share instruments newly issued under a share-based compensation plan.

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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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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Benefit Plans - Narrative (Details)	12 Months Ended
Benefit Plans - Narrative (Details)	Sep. 28, 2019 USD ($) installment shares	Sep. 29, 2018 USD ($) shares	Sep. 30, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 21,300,000	$ 18,000,000.0	$ 17,400,000
Deferred tax benefits recognized related to equity awards	$ 9,200,000	8,200,000	0
Employer matching contribution, percent of eligible earnings (up to)	4.00%
Amount of contributions	$ 9,300,000	8,100,000	7,500,000
SERP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation liability	12,100,000	11,700,000
Total value of assets held by trust	12,100,000	11,700,000
Amount of contributions made to participants' SERP accounts	$ 600,000	1,000,000.0	1,200,000
Other Postretirement Benefit Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of deferred compensation agreements	15 years
Deferred compensation liability	$ 200,000	200,000
Total value of assets held by trust	10,400,000	10,000,000.0
Amount of payments made to participants	$ 100,000	$ 100,000	$ 400,000
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
Unrecognized compensation expense	$ 7,800,000
Unrecognized compensation expense, weighted average period of recognition	1 year 10 months 24 days
Payout, percent of shares granted	100.00%
Vested (in shares) \| shares	100,000
Granted (in shares) \| shares	100,000	100,000	100,000
PSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	0.00%
Number of shares that may be issued (in shares) \| shares	0
PSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	200.00%
Number of shares that may be issued (in shares) \| shares	500,000
PSUs \| Vest Based on Market Condition - Relative TSR of Common Stock Compared to Companies in Russell 3000 Index
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Payout, percent of shares granted	173.20%
Payout at target, TSR threshold percent of companies in Russell 3000 Index during performance period	50.00%
PSUs \| Vest Based on Performance Condition - Three-Point Annual Average of Absolute Economic Return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
Payout at target, average economic return threshold percentage over performance period	2.50%
Options and SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options and SARS granted in period \| shares	0	0
Weighted average fair value per share (in dollars per share) \| $ / shares			$ 15.66
Fair value vested	$ 300,000	$ 1,300,000	$ 3,500,000
Total intrinsic value exercised	2,400,000	$ 10,900,000	$ 10,200,000
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense	$ 15,400,000
Unrecognized compensation expense, weighted average period of recognition	1 year 3 months 18 days
2016 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares authorized under the plan (in shares) \| shares	3,200,000
2016 Plan \| Cash Incentive Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term cash awards per employee that may be granted annually	$ 4,000,000.0
2016 Plan \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of annual vesting installments \| installment	2
Term	10 years
2016 Plan \| SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of annual vesting installments \| installment	2
Term	7 years
2016 Plan \| PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years
2016 Plan \| PSUs \| Vest Based on Market Condition - Relative TSR of Common Stock Compared to Companies in Russell 3000 Index
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2016 Plan \| PSUs \| Vest Based on Performance Condition - Three-Point Annual Average of Absolute Economic Return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage	50.00%
2016 Plan \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period	3 years