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Accounting Policies Share Repurchases (Details) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2014
Jun. 28, 2014
Jun. 29, 2013
Jun. 28, 2014
Jun. 29, 2013
Accounting Policies [Line Items]          
Payments for Repurchase of Common Stock       $ 286 $ 298
Class A [Member]
          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired   0.3 4.4 8.1 13.5
Payments for Repurchase of Common Stock   11 110 286 298
Share Repurchase Program [Member] | Class A [Member]
          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired   0 4.0 7.1 11.2
Payments for Repurchase of Common Stock   0 100 250 250
Increase in authorized shares to repurchase 25        
Remaining shares available to repurchase   32.1   32.1  
Open market repurchases to fund certain obligations under equity compensation plans [Member] | Class A [Member]
          
Accounting Policies [Line Items]          
Treasury Stock, Shares, Acquired   0.3 0.4 1.0 2.3
Payments for Repurchase of Common Stock   $ 11 $ 10 $ 36 $ 48