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Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
Oct. 01, 2016
Oct. 03, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]    
Unrealized net hedging gain (loss) $ (2) $ (1)
Unrealized net gain (loss) on investments 1 1
Currency translation adjustment (59) (63)
Postretirement benefits reserve adjustments 15 (27)
Total accumulated other comprehensive loss $ (45) $ (90)