Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		4 Months Ended	6 Months Ended
	Apr. 16, 2017	Apr. 10, 2016	Jan. 22, 2017	Apr. 16, 2017	Apr. 10, 2016
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Shares, Acquired				3,220
Increase in obligations for treasury stock repurchases				$ (4,466)	$ 0
Common Stock, Dividends, Per Share, Declared	$ 0.40	$ 0.30	$ 0.40	$ 0.80	$ 0.60
Dividends, Common Stock				$ 25,600
2017 Accrued Share Repurchases [Member]
Equity, Class of Treasury Stock [Line Items]
Increase in obligations for treasury stock repurchases				(11,700)
2016 Accrued Share Repurchases [Member]
Equity, Class of Treasury Stock [Line Items]
Increase in obligations for treasury stock repurchases				7,200
Expiration: November 2018 [Member]
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock, remaining authorized amount	$ 81,000			81,000
Treasury Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method				$ 327,200