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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS (Tables)
 6 Months Ended
Apr. 30, 2024
Defined Benefit Plan, Net Periodic Benefit Cost (Income)  
Schedule of net pension and post-retirement benefit costs
Components of net periodic benefit cost (income). For the three and six months ended April 30, 2024 and 2023, our net pension and post retirement benefit cost (income) were comprised of the following:
 
Three Months Ended April 30,
 U.S.
Pension Plans		Non-U.S.
Pension Plans		U.S. Post Retirement
Benefit Plans
 202420232024202320242023
 (in millions)
Service cost—benefits earned during the period$— $— $3 $2 $— $— 
Interest cost on benefit obligation5 5 7 6 1 1 
Expected return on plan assets(5)(4)(10)(9)(1)(1)
Amortization of net actuarial (gain) loss— — (4)— (1)— 
Amortization of prior service benefit— — — — — (1)
Total net periodic benefit cost (income)$— $1 $(4)$(1)$(1)$(1)
Six Months Ended April 30,
 U.S.
Pension Plans		Non-U.S.
Pension Plans		U.S. Post Retirement
Benefit Plans
 202420232024202320242023
 (in millions)
Service cost—benefits earned during the period$— $— $8 $8 $— $— 
Interest cost on benefit obligation10 10 13 12 2 2 
Expected return on plan assets(10)(9)(19)(18)(2)(2)
Amortization of net actuarial (gain) loss1 — (8)(1)(1)— 
Amortization of prior service benefit— — — — — (1)
Total net periodic benefit cost (income)$1 $1 $(6)$1 $(1)$(1)

The service cost component is recorded in cost of sales and operating expenses in the condensed consolidated statement of operations. All other cost components are recorded in other income (expense), net in the condensed consolidated statement of operations.
Employer Contributions and Expected Employer Contributions
Employer contributions and expected future employer contributions for the remainder of the year were as follows:
Three Months EndedSix Months Ended Employer Contributions
April 30,April 30,For Remainder of Year
20242023202420232024
(in millions)
U.S. defined benefit plans$— $— $— $— $— 
Non-U.S. defined benefit plans$3 $4 $9 $9 $8