Retirement Plans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Jun. 26, 2020	Sep. 24, 2021	Sep. 25, 2020
Pension and Other Postretirement Benefits Cost (Reversal of Cost) [Abstract]
Document Period End Date		Sep. 24, 2021
Retirement plan expenses	$ 23,375	$ 26,379	$ 25,257

The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is YYYY-MM-DD.

No definition available.

Name:	dei_DocumentPeriodEndDate
Namespace Prefix:	dei_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration