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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Assets Measured at Fair Value Using Significant Unobservable Inputs) (Level 3) (Details) - Foreign Plan [Member] - Pension Plan [Member] - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]    
Fair value — beginning of year $ 1,392 $ 1,440
Fair value — end of year 1,538 1,392
Significant Unobservable Inputs (Level 3)    
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]    
Fair value — beginning of year 3 3
Realized gains 0 0
Unrealized gains/(losses) 0 0
Purchases, sales, issuances, and settlements (3) 0
Transfers in (out) 0 0
Fair value — end of year $ 0 $ 3