Employee Benefit Plans - Percentage Allocation of Plan Assets (Details) - United States [Member]	Sep. 25, 2021	Sep. 26, 2020
Actual allocation of assets held in trust [Abstract]
Percentage allocation of plan assets	100.00%	100.00%
Fixed income securities [Member]
Actual allocation of assets held in trust [Abstract]
Percentage allocation of plan assets	86.00%	86.00%
Equity securities [Member]
Actual allocation of assets held in trust [Abstract]
Percentage allocation of plan assets	14.00%	14.00%