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COMMON STOCK (Narrative) (Details)
12 Months Ended
Sep. 27, 2019
vote
shares
Sep. 28, 2018
shares
Class of Stock [Line Items]    
Percentage of cash dividends on Class A common stock relative to Class B common stock 110.00%  
Ratio of Class B common stock convertible to Class A common stock | shares 1  
Shares converted (shares) | shares 84 0
Class A    
Class of Stock [Line Items]    
Percentage of board members elected by class of stock 25.00%  
Vote per share owned | vote 1  
Class B    
Class of Stock [Line Items]    
Percentage of board members elected by class of stock 75.00%  
Vote per share owned | vote 10