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Pension, Postretirement and Postemployment Defined Benefit Plans - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended
	Mar. 26, 2023	Mar. 26, 2023	Mar. 27, 2022	Sep. 25, 2022
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plans, withdrawal obligation	$ 23,400,000	$ 23,400,000		$ 25,000,000
Multiemployer plans, withdrawal obligation, period (years)	20 years
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, contributions by employer		0	$ 0
Defined benefit plan, expected future employer contributions, next fiscal year	$ 0	$ 0

X

- Definition

The period of time in which an obligation recognized by withdrawing from a pension or postretirement benefit plan will be paid.

+ References

No definition available.

+ Details

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X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

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-Publisher FASB
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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.

+ References

No definition available.

+ Details

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

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X

- Definition

Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

No definition available.

+ Details

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