v3.26.1
FAIR VALUE MEASUREMENTS (Fair value of assets and liabilities measured on a recurring basis) (Details) - USD ($)
$ in Millions
Apr. 30, 2026
Oct. 31, 2025
Assets, Long-term [Abstract]    
Equity investments - other $ 48 $ 42
Fair Value, Measurements, Recurring    
Assets Short - term [Abstract]    
Money market funds 1,642 1,349
Derivative instruments (foreign exchange contracts) 18 14
Assets, Long-term [Abstract]    
Equity investments 120 169
Total assets measured at fair value 1,780 1,532
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 9 8
Liabilities Long-term [Abstract]    
Deferred compensation liability 39 40
Hedged Liability, Fair Value Hedge 4 0
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value 9 0
Total liabilities measured at fair value 61 48
Fair Value, Measurements, Recurring | Level 1    
Assets Short - term [Abstract]    
Money market funds 1,642 1,349
Derivative instruments (foreign exchange contracts) 0 0
Assets, Long-term [Abstract]    
Equity investments 120 169
Total assets measured at fair value 1,762 1,518
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 0 0
Liabilities Long-term [Abstract]    
Deferred compensation liability 0 0
Hedged Liability, Fair Value Hedge 0 0
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value 0 0
Total liabilities measured at fair value 0 0
Fair Value, Measurements, Recurring | Level 2    
Assets Short - term [Abstract]    
Money market funds 0 0
Derivative instruments (foreign exchange contracts) 18 14
Assets, Long-term [Abstract]    
Equity investments 0 0
Total assets measured at fair value 18 14
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 9 8
Liabilities Long-term [Abstract]    
Deferred compensation liability 39 40
Hedged Liability, Fair Value Hedge 4 0
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value 9 0
Total liabilities measured at fair value 61 48
Fair Value, Measurements, Recurring | Level 3    
Assets Short - term [Abstract]    
Money market funds 0 0
Derivative instruments (foreign exchange contracts) 0 0
Assets, Long-term [Abstract]    
Equity investments 0 0
Total assets measured at fair value 0 0
Liabilities, Short-term [Abstract]    
Derivative instruments (foreign exchange contracts) 0 0
Liabilities Long-term [Abstract]    
Deferred compensation liability 0 0
Hedged Liability, Fair Value Hedge 0 0
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value 0 0
Total liabilities measured at fair value $ 0 $ 0