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Stock-Based Compensation (Schedule Of Stock-Based Compensation Arrangements By Stock-Based Payment Award) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
6 Months Ended
Sep. 28, 2012
Sep. 30, 2011
Restricted Stock Units (RSUs) [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value per grant $ 15.20 $ 18.33
Fair value of awards granted $ 155 $ 173
Total fair value of awards vested 39 79
Total unrecognized compensation expense 272 221
Weighted-average remaining vesting period (in years) 3 years 3 years
Performance Based Restricted Stock [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value per grant $ 16.15 $ 23.58
Fair value of awards granted 29 11
Total fair value of awards vested 1  
Total unrecognized compensation expense 23 10
Weighted-average remaining vesting period (in years) 2 years 3 years
Stock Options [Member]
   
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Weighted-average fair value per grant $ 4.07 $ 5.24
Total intrinsic value of stock options exercised 13 26
Total unrecognized compensation expense $ 22 $ 38
Weighted-average remaining vesting period (in years) 2 years 3 years