Segment Reporting (Revenue from External Customers by Products and Services) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 30, 2025	Mar. 31, 2024	Mar. 30, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Total net revenues		$ 8,761.6	$ 8,563.0	$ 18,159.4	$ 17,988.3
Beverage Member
Segment Reporting Information [Line Items]
Total net revenues	[1]	5,293.6	5,160.6	10,971.6	10,856.4
Food Member
Segment Reporting Information [Line Items]
Total net revenues	[2]	1,691.9	1,583.0	3,482.3	3,339.9
Other Products Member
Segment Reporting Information [Line Items]
Total net revenues	[3]	$ 1,776.1	$ 1,819.4	$ 3,705.5	$ 3,792.0
Revenue Benchmark [Member] | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage		100.00%	100.00%	100.00%	100.00%
Revenue Benchmark [Member] | Beverage Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[1]	60.00%	60.00%	60.00%	60.00%
Revenue Benchmark [Member] | Food Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[2]	19.00%	18.00%	19.00%	19.00%
Revenue Benchmark [Member] | Other Products Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[3]	21.00%	22.00%	21.00%	21.00%

[1] Beverage” represents sales within our company-operated stores.

[2] Food” includes sales within our company-operated stores.

[3] Other” primarily consists of packaged and single-serve coffees and teas, royalty and licensing revenues, beverage-related ingredients, and serveware, among other items.