Employee Benefit Plans - Percentage Allocation of Plan Assets (Details) - United States [Member]	Sep. 29, 2018	Sep. 30, 2017
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	85.00%	85.00%
Equity securities [Member]
Actual allocation of assets held in trust [Abstract]
Percentage allocation of plan assets	15.00%	15.00%