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DERIVATIVES- Text (Details)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 15, 2016
USD ($)
Jul. 31, 2020
USD ($)
Jul. 31, 2019
USD ($)
Jul. 31, 2020
USD ($)
Jul. 31, 2019
USD ($)
Aug. 16, 2019
USD ($)
Feb. 01, 2016
USD ($)
contracts
Jul. 01, 2012
USD ($)
Derivative Instruments and Hedging Activities Disclosure                
Aggregate fair value of all derivative instruments with credit-risk-related contingent features that were in a net liability position   $ 11   $ 11        
Senior Notes 2022 | Treasury Lock [Member] | Derivatives Designated as Hedging Instrument | Cash Flow Hedging                
Terminated Derivative Contracts                
Derivative, Notional Amount               $ 400
Remaining gain (loss) to be amortized on derivative   1   1        
Senior Notes 2026 | Interest Rate Swap | Derivatives Designated as Hedging Instrument | Cash Flow Hedging                
Terminated Derivative Contracts                
Number of interest rate swap contracts terminated | contracts             3  
Derivative, Notional Amount             $ 300  
Interest rate swap payments $ 10              
Remaining gain (loss) to be amortized on derivative   6   6        
Senior Notes 2029 | Treasury Lock [Member] | Derivatives Designated as Hedging Instrument | Cash Flow Hedging                
Terminated Derivative Contracts                
Derivative, Notional Amount           $ 250    
Remaining gain (loss) to be amortized on derivative   5   5        
Accumulated Other Comprehensive Income (Loss) | Foreign Exchange Contracts | Derivatives Designated as Hedging Instrument | Cash Flow Hedging                
Net Investment Hedge                
Gain (loss) recognized in accumulated other comprehensive loss   (9) $ 4 (6) $ 2      
Accumulated Other Comprehensive Income (Loss) | Foreign Exchange Contracts | Derivatives Designated as Hedging Instrument | Net Investment Hedging [Member]                
Net Investment Hedge                
Gain (loss) recognized in accumulated other comprehensive loss   $ (7) $ 0 $ (6) $ 0