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INCOME TAXES - 2017 U.S. Tax Reform - Tax Cuts and Jobs Act (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Operating Loss Carryforwards [Line Items]      
Tax Cuts and Jobs Act, Income Tax Expense (Benefit)   $ 552  
U.S. Tax Reform tax expense $ 0   $ 0
Tax Cuts and Jobs Act, Decrease in Deferred Tax Liability due to Transition Tax   152  
Tax Cuts and Jobs Act, Change in Tax Rate, Income Tax Expense (Benefit)   53  
Net transition tax   651  
Defered Tax Liability for Unremmitted earnings of foreign subsidiaries   10  
U.S. Tax Cuts and Jobs Act of 2017 [Member]      
Operating Loss Carryforwards [Line Items]      
Net transition tax   $ 499