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Revenue Recognition Revenue Recognition (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Aug. 26, 2018
Dec. 30, 2018
Oct. 01, 2018
Sep. 30, 2018
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Deferred Revenue, Current   $ 1,554.2 $ 1,221.0 $ 1,642.9
Deferred Revenue, Noncurrent   6,823.7 6,840.0 $ 6,775.7
Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]        
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Deferred Revenue, Current   1,306.0 907.0  
Deferred Revenue, Noncurrent   92.0 $ 64.0  
Company-operated stores [Member] | Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]        
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Contract with Customer, Liability, Revenue Recognized   34.9    
Licensed stores [Member] | Revenue Recognition Period Stored Value Cards and Loyalty Program Breakage [Member]        
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Contract with Customer, Liability, Revenue Recognized   4.6    
Nestle Global Coffee Alliance [Member]        
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]        
Deferred Revenue $ 7,000.0      
Prepaid Royalty Economic Life 40 years      
Deferred Revenue, Current   174.0    
Deferred Revenue, Noncurrent   $ 6,700.0