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Earnings per Share (EPS) and Common Stock (Narrative) (Details) - USD ($)
$ in Millions
6 Months Ended 32 Months Ended
Apr. 01, 2017
Apr. 02, 2016
Apr. 01, 2017
Sep. 30, 2016
Aug. 04, 2014
Earnings Per Share and Common Stock          
Stock option restricted shares and restricted stock units excluded from computation of EPS, shares 1,800,000 2,100,000      
Common stock, shares authorized 500,000,000   500,000,000 500,000,000  
Stock Repurchase Program, Authorized Amount         $ 600.0
Payments for Repurchase of Common Stock     $ 189.9