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Equity Method and Other Investments (Equity Method Investments) (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 01, 2023
Oct. 02, 2022
Oct. 03, 2021
Sep. 23, 2021
Korea JV | E-Mart Inc.        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Incremental Ownership Percentage       17.50%
Korea JV | Korea JV        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Ownership Percentage       50.00%
Korea JV | Korea JV | Apfin Investment Pte Ltd, an affiliate of GIC Private Limited        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Ownership Percentage       32.50%
Related product and distribution costs $ 85.6 $ 76.5 $ 92.1  
Revenue From Related Parties 85.7 80.9 160.8  
Increase (Decrease) in Due from Affiliates, Current $ 19.1 $ 14.8    
Proceeds from Divestiture of Interest in Joint Venture     $ 1,175.0  
North American Coffee Partnership [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Ownership Percentage 50.00%      
Tata Starbucks Limited (India) [Member]        
Schedule of Equity Method Investments [Line Items]        
Equity Method Investment, Ownership Percentage 50.00%