Segment Reporting (Consolidated Revenue Mix By Product Type (Details) (1) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Sep. 27, 2020	Jun. 28, 2020	Mar. 29, 2020	Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 27, 2020	Sep. 29, 2019	Sep. 30, 2018
Revenue from External Customer [Line Items]
Revenues	$ 6,203.1	$ 4,222.1	$ 5,995.7	$ 7,097.1	$ 6,747.0	$ 6,823.0	$ 6,305.9	$ 6,632.7	$ 23,518.0	$ 26,508.6	$ 24,719.5
Beverage Member (2)
Revenue from External Customer [Line Items]
Revenues									14,337.5	15,921.2	14,463.1
Food Member (3)
Revenue from External Customer [Line Items]
Revenues									3,799.2	4,336.3	3,986.5
Other Products Member (4)
Revenue from External Customer [Line Items]
Revenues									$ 5,381.3	$ 6,251.1	$ 6,269.9	[1]
Total net revenues [Member]
Revenue from External Customer [Line Items]
Percentage of product revenue to total revenue									100.00%	100.00%	100.00%
Total net revenues [Member] | Beverage Member (2)
Revenue from External Customer [Line Items]
Percentage of product revenue to total revenue									61.00%	60.00%	59.00%
Total net revenues [Member] | Food Member (3)
Revenue from External Customer [Line Items]
Percentage of product revenue to total revenue									16.00%	16.00%	16.00%
Total net revenues [Member] | Other Products Member (4)
Revenue from External Customer [Line Items]
Percentage of product revenue to total revenue									23.00%	24.00%	25.00%	[1]

[1] (1)     Certain prior period amounts have been reclassified to conform to current year presentation. (2)     Beverage represents sales within our company-operated stores. (3)     Food includes sales within our company-operated stores. (4)     “Other” primarily consists of packaged and single-serve coffees and teas, royalty and licensing revenues, beverage-related ingredients, serveware and ready-to-drink beverages, among other items.