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Stockholders' Equity (Details) - USD ($)
$ / shares in Units, shares in Millions
12 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
Nov. 15, 2019
Aug. 06, 2019
Jun. 28, 2019
Mar. 29, 2019
Dec. 28, 2018
Jun. 29, 2018
Mar. 30, 2018
Dec. 29, 2017
Class of Stock [Line Items]                      
Stock repurchase program, authorized amount     $ 250,000,000.0   $ 200,000,000.0            
Dividends paid $ 108,439,000 $ 103,115,000 $ 100,813,000                
Dividends declared (in dollars per share) $ 0.110 $ 0.105       $ 0.110 $ 0.110 $ 0.110 $ 0.105 $ 0.105 $ 0.105
Common Stock                      
Class of Stock [Line Items]                      
Treasury stock, shares, acquired 1.6 0.6                  
Treasury stock, value acquired $ 50,000,000.0 $ 24,400,000                  
Forecast | Subsequent Event                      
Class of Stock [Line Items]                      
Dividends declared (in dollars per share)       $ 0.11