Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended			4 Months Ended	9 Months Ended
	Jul. 09, 2017	Apr. 16, 2017	Jul. 03, 2016	Jan. 22, 2017	Jul. 09, 2017	Jul. 03, 2016
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired					3.2
Decrease in obligations for treasury stock repurchases					$ (7,208)	$ 0
Common Stock, Dividends, Per Share, Declared	$ 0.40	$ 0.40	$ 0.30	$ 0.40	$ 1.20	$ 0.90
Dividends, Common Stock					$ 37,400
Expiration: November 2018 [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock, remaining authorized amount	$ 181,000				181,000
Treasury Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method					$ 327,200