Leases - Schedule of Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 386.9	$ 363.3	$ 1,185.6	$ 1,113.9
Variable lease costs	224.6	184.3	671.3	610.2
Short-term lease costs	7.4	8.1	23.7	24.7
Total lease costs	$ 618.9	555.7	$ 1,880.6	1,748.8
International [Member]
Lessee, Lease, Description [Line Items]
Rent Concession		$ 21.7		$ 21.7