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Earnings Per Share and Dividends (Basic and Diluted Weighted-Average Shares Outstanding) (Details) - shares
12 Months Ended
Sep. 29, 2018
Sep. 30, 2017
Oct. 01, 2016
Earnings Per Share [Abstract]      
Basic weighted-average shares outstanding 35,661,638 35,852,448 36,277,445
Dilutive effect of equity-based awards 390,669 377,595 251,899
Diluted weighted-average shares outstanding 36,052,307 36,230,043 36,529,344