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Restructuring Charges and Cost Savings Initiatives (Schedule Of Restructuring Charges Associated With Each Reportable Segment) (Details) - 2015 Initiatives [Member] - USD ($)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Apr. 30, 2017
May 01, 2016
Apr. 30, 2017
May 01, 2016
Jul. 31, 2016
Aug. 02, 2015
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Incurred Cost $ 7 $ 15 $ 18 $ 70 $ 82 $ 124
Restructuring and Related Cost, Cost Incurred to Date 224   224      
Americas Simple Meals and Beverages [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Incurred Cost 1   1      
Restructuring and Related Cost, Cost Incurred to Date 72   72      
Global Biscuits and Snacks [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Incurred Cost 2   4      
Restructuring and Related Cost, Cost Incurred to Date 70   70      
Campbell Fresh [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Incurred Cost 0   0      
Restructuring and Related Cost, Cost Incurred to Date 2   2      
Corporate, Non-Segment [Member]            
Restructuring Cost and Reserve [Line Items]            
Restructuring and Related Cost, Incurred Cost 4   13      
Restructuring and Related Cost, Cost Incurred to Date $ 80   $ 80