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Property, Plant, and Equipment (Details) - USD ($)
$ in Millions
12 Months Ended
Apr. 28, 2017
Apr. 29, 2016
Apr. 24, 2015
Property, Plant and Equipment [Line Items]      
Subtotal $ 9,691 $ 9,714  
Less: Accumulated depreciation (5,330) (4,873)  
Property, plant, and equipment, net 4,361 4,841  
Depreciation expense 937 889 $ 573
Land and land improvements      
Property, Plant and Equipment [Line Items]      
Subtotal $ 186 215  
Land and land improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Property, plant, and equipment, useful life 20 years    
Buildings and leasehold improvements      
Property, Plant and Equipment [Line Items]      
Subtotal $ 2,175 2,394  
Buildings and leasehold improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Property, plant, and equipment, useful life 40 years    
Equipment      
Property, Plant and Equipment [Line Items]      
Property, plant, and equipment, useful life 15 years    
Subtotal $ 6,435 6,328  
Equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Property, plant, and equipment, useful life 3 years    
Equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Property, plant, and equipment, useful life 7 years    
Construction in progress      
Property, Plant and Equipment [Line Items]      
Subtotal $ 895 $ 777