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Stockholders' Equity (Narrative) (Details) - USD ($)
shares in Millions
May 28, 2017
Sep. 29, 2016
Stockholders' Equity Note [Abstract]    
Share repurchase program, authorized amount   $ 500,000,000.0
Stock repurchase program, remaining authorized repurchase amount $ 469,800,000  
Stock repurchase program, cumulative shares repurchased 188.6  
Treasury shares retirement, cumulative shares 176.0