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Employee Benefit Plans (Summary Of Restricted Stock And Stock Unit Activity) (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Oct. 28, 2017
Jul. 29, 2017
Restricted Stock/ Stock Units    
Assumed from acquisitions (in shares) 3,000,000 8,000,000
Weighted- Average Price per Share    
Assumed from acquisitions (in dollars per share) $ 8.07 $ 4.47
Restricted Stock/Stock Units    
Restricted Stock/ Stock Units    
Beginning balance (in shares) 141,000,000 145,000,000
Granted (in shares) 10,000,000 50,000,000
Assumed from acquisitions (in shares) 1,000,000 15,000,000
Vested (in shares) (29,000,000) (54,000,000)
Canceled/forfeited (in shares) (6,000,000) (15,000,000)
Ending balance (in shares) 117,000,000 141,000,000
Weighted- Average Price per Share    
Beginning balance (in dollars per share) $ 26.94 $ 24.26
Granted (in dollars per share) 30.19 27.89
Assumed from acquisitions (in dollars per share) 28.70 32.21
Vested (in dollars per share) 24.52 23.14
Canceled/forfeited (in dollars per share) 28.73 23.56
Ending balance (in dollars per share) $ 27.75 $ 26.94
Aggregate Fair Value $ 927 $ 1,701