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Equity (Schedule of Share Repurchases) (Details) - USD ($)
shares in Millions, $ in Millions
3 Months Ended
Jan. 02, 2016
Dec. 27, 2014
Class of Stock [Line Items]    
Payments for Repurchase of Common Stock $ 387 $ 91
Class A [Member]    
Class of Stock [Line Items]    
Treasury Stock, Shares, Acquired 8.3 2.2
Payments for Repurchase of Common Stock $ 387 $ 91
Share Repurchase Program [Member] | Class A [Member]    
Class of Stock [Line Items]    
Treasury Stock, Shares, Acquired 7.6 2.0
Payments for Repurchase of Common Stock $ 357 $ 81
Open Market Repurchases [Member] | Class A [Member]    
Class of Stock [Line Items]    
Treasury Stock, Shares, Acquired 0.7 0.2
Payments for Repurchase of Common Stock $ 30 $ 10