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Balance Sheet Details (Details 2) (USD $)
In Millions
Apr. 30, 2011
Oct. 31, 2010
Property, Plant and Equipment    
Property, plant and equipment, gross $ 24,551 $ 22,927
Accumulated depreciation (12,661) (11,164)
Property, plant and equipment, net 11,890 11,763
Land
   
Property, Plant and Equipment    
Property, plant and equipment, gross 652 530
Buildings and leasehold improvements
   
Property, Plant and Equipment    
Property, plant and equipment, gross 8,447 8,523
Machinery and equipment
   
Property, Plant and Equipment    
Property, plant and equipment, gross $ 15,452 $ 13,874