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Stockholders' Equity and Stock-Based Compensation - Dividends (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Jul. 24, 2017
Apr. 26, 2017
Jan. 25, 2017
Jun. 30, 2017
Jul. 01, 2016
Jun. 30, 2017
Jul. 01, 2016
Dividends Payable [Line Items]              
Common stock, dividends declared (in dollars per share)   $ 0.14 $ 0.14 $ 0.14 $ 0.12 $ 0.42 $ 0.36
Dividend Payment   $ 14.3 $ 14.3        
Subsequent Event [Member]              
Dividends Payable [Line Items]              
Common stock, dividends declared (in dollars per share) $ 0.14            
Dividend Payment $ 14.3