Supplemental Income Statement Information (Store Operating Expenses) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 02, 2022	Dec. 27, 2020
Store Operating Expenses [Line Items]
Wages and benefits	$ 2,010.7	$ 1,606.2
Occupancy costs	665.3	628.1
Other store operating expenses	724.0	633.0
Store operating expenses	$ 3,400.0	$ 2,867.3