Leases- Schedule of Cash Flow, Supplemental Disclosures (Details) $ in Millions	12 Months Ended
	Sep. 27, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Operating Lease, Payments	$ 1,463.3
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1,093.0
Operating Lease, Weighted Average Remaining Lease Term	8 years 9 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	2.50%