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Stockholder's Equity Share Repurchase (Details) - USD ($)
$ / shares in Units, shares in Millions
3 Months Ended 9 Months Ended
Jul. 21, 2016
Jul. 19, 2016
Jul. 01, 2016
Jul. 01, 2016
Apr. 01, 2016
Nov. 10, 2015
2015 Stock Repurchase Program [Member]            
Authorized amount of stock for repurchase           $ 400,000,000
Stock repurchased     $ 191,900,000 $ 327,000,000    
Stock repurchased (shares)     3.0 5.0    
Average price of stock repurchased (in dollars per share)     $ 63.96 $ 65.40    
Remaining amount authorized fro stock repurchase         $ 73,000,000  
Subsequent Event [Member] | 2016 Stock Repurchase Program [Member]            
Authorized amount of stock for repurchase $ 400,000,000          
Share repurchase authorized date   Jul. 19, 2016        
Stock repurchase program expiration date Jul. 19, 2018