Leases - Supplemental Balance Sheet Schedule (Details) - USD ($) $ in Thousands	Mar. 27, 2020	Sep. 28, 2019
Right-of-use assets
Operating lease assets	$ 731,815	$ 767,000
Lease Liabilities
Operating lease liabilities, current	155,928	180,700
Operating lease liabilities, noncurrent	792,088	$ 810,100
Total lease liabilities	$ 948,016