Segment Reporting (Revenue from External Customers by Products and Services) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Mar. 31, 2024	Apr. 02, 2023	Mar. 31, 2024	Apr. 02, 2023
Segment Reporting Information [Line Items]
Total net revenues		$ 8,563.0	$ 8,719.8	$ 17,988.3	$ 17,433.8
Beverage Member
Segment Reporting Information [Line Items]
Total net revenues	[1]	5,160.6	5,226.9	10,856.4	10,401.4
Food Member
Segment Reporting Information [Line Items]
Total net revenues	[2]	1,583.0	1,590.9	3,339.9	3,157.0
Other Products Member
Segment Reporting Information [Line Items]
Total net revenues	[3]	$ 1,819.4	$ 1,902.0	$ 3,792.0	$ 3,875.4
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]	18.00%	18.00%	19.00%	18.00%
Revenue Benchmark [Member] | Other Products Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[3]	22.00%	22.00%	21.00%	22.00%

[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.