Leases - Supplemental Cash Flow (Details) $ in Thousands	6 Months Ended
	Mar. 27, 2020 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurements of lease liabilities	$ 96,501
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 54,192
Weighted average remaining lease term - operating leases	7 years 6 months
Weighted average discount rate - operating leases	2.90%