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Stockholders' Equity (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
3 Months Ended 4 Months Ended 6 Months Ended
Apr. 10, 2016
Apr. 12, 2015
Jan. 17, 2016
Apr. 10, 2016
Apr. 12, 2015
Equity, Class of Treasury Stock [Line Items]          
Treasury Stock, Shares, Acquired       3.5  
Repurchases of common stock       $ 250,000 $ 174,115
Common Stock, Dividends, Per Share, Declared $ 0.30 $ 0.20 $ 0.30 $ 0.60 $ 0.40
Dividends, Common Stock       $ 20,800  
Expiration: November 2017 [Member]          
Equity, Class of Treasury Stock [Line Items]          
Repurchase of common stock, remaining authorized amount $ 50,000     50,000  
Treasury Stock [Member]          
Equity, Class of Treasury Stock [Line Items]          
Treasury Stock, Value, Acquired, Cost Method       $ 250,000