XML 73 R63.htm IDEA: XBRL DOCUMENT v3.19.1
Financial Instruments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2018
Oct. 31, 2018
Derivatives, Fair Value          
Fair value of derivatives with credit contingent features in a net liability position $ 56   $ 56   $ 68
Period to collateralize     2 days    
Loss expected to be reclassified from Accumulated OCI into earnings in next 12 months     $ 141    
Cash flow hedges          
Derivatives, Fair Value          
Foreign currency maturity     12 months    
Cash flow hedges | Minimum          
Derivatives, Fair Value          
Duration of the loan term (period)     2 years    
Cash flow hedges | Maximum          
Derivatives, Fair Value          
Duration of the loan term (period)     5 years    
Interest rate swap          
Derivatives, Fair Value          
Loss on interest rate swap agreements recognized in earnings 4 $ 29 $ 16 $ 11  
Other Non-Current Assets | Equity securities in privately held companies          
Derivatives, Fair Value          
Cost method and other equity investments $ 49   $ 49   $ 36