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Reserves for Closed Properties (Details)
$ in Millions
9 Months Ended 12 Months Ended
Jul. 03, 2016
USD ($)
Sep. 27, 2015
USD ($)
Closure
Sep. 28, 2014
USD ($)
Closure
Restructuring and Related Activities [Abstract]      
New Closures, Number | Closure   7 2
Restructuring Reserve [Roll Forward]      
Beginning Balance $ 28 $ 31 $ 36
Additions 4 9 4
Usage (8) (13) (11)
Adjustments 2 1 2
Ending Balance $ 26 $ 28 $ 31