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Taxes on Earnings (Detail 8) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Carryforward      
U.S. foreign tax credits $ 291    
U.S. research and development and other credits 99    
Tax credits in state and foreign jurisdictions 205    
Balance at end of year 595    
Valuation Allowance      
Tax credits in state and foreign jurisdictions (160)    
Balance at end of year (160)    
Valuation allowance balance      
Balance at beginning of year 2,252    
(Provision) benefit for taxes (918) $ 991 $ (596)
Balance at end of year 2,650 2,252  
Increase (decrease) in valuation allowances 398 1,700  
Deferred tax asset valuation allowance      
Valuation allowance balance      
Balance at beginning of year 2,252 3,912 3,194
(Provision) benefit for taxes (235) (1,155) 198
Other comprehensive income, currency translation and charges to other accounts 633 (505) 520
Balance at end of year $ 2,650 $ 2,252 $ 3,912