Segment Reporting (Revenue from External Customers by Products and Services) (Details) - USD ($) $ in Millions		3 Months Ended
		Dec. 31, 2023	Jan. 01, 2023
Segment Reporting Information [Line Items]
Total net revenues		$ 9,425.3	$ 8,713.9
Beverage Member
Segment Reporting Information [Line Items]
Total net revenues	[1]	5,695.9	5,173.0
Food Member
Segment Reporting Information [Line Items]
Total net revenues	[2]	1,757.1	1,565.9
Other Products Member
Segment Reporting Information [Line Items]
Total net revenues	[3]	$ 1,972.3	$ 1,975.0
Revenue Benchmark [Member] | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage		100.00%	100.00%
Revenue Benchmark [Member] | Beverage Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[1]	60.00%	59.00%
Revenue Benchmark [Member] | Food Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[2]	19.00%	18.00%
Revenue Benchmark [Member] | Other Products Member | Product type
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	[3]	21.00%	23.00%

[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, serveware, and beverage-related ingredients, among other items.