v3.26.1
RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Net Pension and post-retirement benefit cost(benefit) components) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2026
Apr. 30, 2025
Defined benefit plan | United States        
Defined Benefit Plan Disclosure        
Service cost—benefits earned during the period $ 3 $ 5 $ 7 $ 9
Interest cost on benefit obligation 10 9 19 19
Expected return on plan assets (14) (13) (27) (26)
Amortization of net actuarial loss (gain) 1 2 2 3
Net periodic benefit cost (benefit) 0 3 1 5
Defined benefit plan | Foreign Plan        
Defined Benefit Plan Disclosure        
Service cost—benefits earned during the period 3 2 5 4
Interest cost on benefit obligation 8 8 17 17
Expected return on plan assets (15) (14) (31) (29)
Amortization of net actuarial loss (gain) (1) (1) (2) (2)
Net periodic benefit cost (benefit) (5) (5) (11) (10)
Post-retirement Benefits Plan | United States        
Defined Benefit Plan Disclosure        
Service cost—benefits earned during the period 0 0 0 0
Interest cost on benefit obligation 2 2 4 4
Expected return on plan assets (4) (3) (7) (6)
Amortization of net actuarial loss (gain) 0 (1) (1) (1)
Net periodic benefit cost (benefit) $ (2) $ (2) $ (4) $ (3)