Supplemental Income Statement Information (Store Operating Expenses) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 30, 2025	Mar. 31, 2024	Mar. 30, 2025	Mar. 31, 2024
Store Operating Expenses [Line Items]
Wages and benefits	$ 2,406.1	$ 2,139.4	$ 4,795.2	$ 4,348.7
Occupancy costs	807.2	741.3	1,609.3	1,487.0
Other store operating expenses	962.7	843.4	1,974.6	1,739.9
Store operating expenses	$ 4,176.0	$ 3,724.1	$ 8,379.1	$ 7,575.6