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Financial Instruments - Pre-tax Effect of Derivative Instruments in Cash Flow and Net Investment Hedging Relationships (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2018
Jan. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]    
Net revenue $ 7,674 $ 6,902
Interest and other, net (21) (78)
(Loss) earnings from continuing operations before taxes (657) 335
Net (loss) earnings from discontinued operations (46) 16
Net earnings 1,436 267
Foreign currency contracts | Cash flow hedges    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion) (181) 136
Foreign currency contracts | Cash flow hedges | Gains (Losses) Reclassified from Accumulated OCI Into Earnings (Effective Portion) | Reclassifications of gains (losses) into earnings    
Derivative Instruments, Gain (Loss) [Line Items]    
Net revenue (46) 54
Interest and other, net 16 83
(Loss) earnings from continuing operations before taxes (30) 137
Net (loss) earnings from discontinued operations   26
Net earnings   163
Foreign currency contracts | Cash flow hedges | Net revenue    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion) (179) 52
Foreign currency contracts | Cash flow hedges | Interest and other, net    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion) (2) 76
Foreign currency contracts | Cash flow hedges | Net earnings from continuing operations    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)   128
Foreign currency contracts | Cash flow hedges | Net loss from discontinued operations    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion)   8
Foreign currency contracts | Net investment hedges | Gains (Losses) Reclassified from Accumulated OCI Into Earnings (Effective Portion) | Reclassifications of gains (losses) into earnings    
Derivative Instruments, Gain (Loss) [Line Items]    
Interest and other, net 0 0
Foreign currency contracts | Net investment hedges | Interest and other, net    
Derivative Instruments, Gain (Loss) [Line Items]    
Gains (Losses) Recognized in Other Comprehensive Income (OCI) on Derivatives (Effective Portion) $ (82) $ (2)