Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Jan. 19, 2020	Sep. 30, 2019
Leases [Abstract]
Operating lease right-of-use assets	$ 884,213	$ 880,564
Finance lease right-of-use asset	2,742
Total ROU assets	886,955
Current operating lease liabilities	158,779	159,821
Current finance lease liabilities	786
Long-term operating lease liabilities, net of current portion	767,819	$ 770,818
Long-term finance lease liabilities	2,609
Total lease liabilities	$ 929,993