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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Tables)
 6 Months Ended
Apr. 30, 2025
Retirement Benefits [Abstract]  
Schedule of net pension and post-retirement benefit costs
For the three and six months ended April 30, 2025 and 2024, our net pension and post-retirement benefit cost (benefit) consisted of the following:
 Pensions 
 U.S. Defined Benefit PlansNon-U.S. Defined Benefit
Plans		U.S. Post-Retirement
Benefit Plan
 Three Months Ended
April 30,
 202520242025202420252024
(in millions)
Service cost—benefits earned during the period$5 $3 $2 $2 $— $— 
Interest cost on benefit obligation9 10 8 9 2 2 
Expected return on plan assets(13)(12)(14)(13)(3)(3)
Amortization of net actuarial loss (gain)2 3 (1)2 (1)— 
Net periodic benefit cost (benefit)$3 $4 $(5)$— $(2)$(1)
Pensions
U.S. Defined Benefit PlansNon-U.S. Defined Benefit
Plans		U.S. Post-Retirement
Benefit Plan
Six months ended
April 30,
202520242025202420252024
(in millions)
Service cost—benefits earned during the period$9 $7 $4 $4 $— $— 
Interest cost on benefit obligation19 20 17 18 4 4 
Expected return on plan assets(26)(24)(29)(26)(6)(6)
Amortization of net actuarial loss (gain)3 5 (2)4 (1)— 
Net periodic benefit cost (benefit)$5 $8 $(10)$— $(3)$(2)