Repurchase of Common Stock (Shares Repurchased) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended			3 Months Ended	12 Months Ended			51 Months Ended
	Sep. 30, 2017	Sep. 02, 2017	Aug. 05, 2017	Sep. 30, 2017	Sep. 30, 2017	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016
Equity, Class of Treasury Stock [Line Items]
Total Number of Shares Purchased					413,337	217,568	140,336	2,893,487
Dollar Value of Shares that May Yet Be Purchased Under the Plans	$ 11.3			$ 11.3	$ 11.3
Common Stock
Equity, Class of Treasury Stock [Line Items]
Total Number of Shares Purchased	0	128,710	66,319	195,029
Average Price Paid per Share	$ 0.00	$ 19.21	$ 20.20	$ 19.54
Dollar Value of Shares that May Yet Be Purchased Under the Plans	$ 11.3	$ 1.3	$ 3.8	$ 11.3	$ 11.3
Common Stock \| Publicly Announced Plan
Equity, Class of Treasury Stock [Line Items]
Total Number of Shares Purchased	0	128,710	66,319	195,029