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INCOME TAXES Operating loss carryforwards (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Operating Loss Carryforwards [Line Items]      
Interest and penalties relating to unrecognized tax benefits recognized $ 5 $ 2 $ 2
US      
Operating Loss Carryforwards [Line Items]      
Operating Loss Carryforwards $ 7    
Operating Loss Carryforwards Expiration Duration 2027 through 2029    
State      
Operating Loss Carryforwards [Line Items]      
Operating Loss Carryforwards $ 58    
Operating Loss Carryforwards Expiration Duration 2029    
Foreign Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating Loss Carryforwards $ 979    
Operating Loss Carryforwards Expiration Duration 2023 through 2034    
Portion Of Deferred Tax Assets Operating Loss Carryforwards Foreign With Expiration Dates 2023 through 2034 $ 93    
Portion Of Deferred Tax Assets Operating Loss Carryforwards Foreign With Expiration Dates 2034 through 2037 670    
Portion Of Deferred Tax Assets Operating Loss Carryforwards Foreign With No Expiration Dates 216    
Research Tax Credit Carryforward [Member]      
Operating Loss Carryforwards [Line Items]      
Operating Loss Carryforwards 19    
Acquired entities [Member]      
Operating Loss Carryforwards [Line Items]      
Interest and penalties relating to unrecognized tax benefits recognized   $ 4  
Acquired entities [Member] | US      
Operating Loss Carryforwards [Line Items]      
Operating Loss Carryforwards $ 51