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RETIREMENT PLANS AND POST RETIREMENT PENSION PLANS- Components of net periodic costs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2023 | Jul. 31, 2022
Pension Plan | United States |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost |  |  |  |
Service cost - benefits earned during the period | $ 0 | $ 0 | $ 0 | $ 0
Interest cost on benefit obligation | 5 | 3 | 15 | 10
Expected return on plan assets | (5) | (6) | (14) | (20)
Amortization: |  |  |  |
Actuarial losses | 0 | 0 | 0 | 0
Prior Service Credit | 0 | 0 | 0 | 0
Total net plan costs (benefits) | 0 | (3) | 1 | (10)
Pension Plan | Foreign Plan |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost |  |  |  |
Service cost - benefits earned during the period | 5 | 6 | 13 | 18
Interest cost on benefit obligation | 6 | 2 | 18 | 7
Expected return on plan assets | (9) | (10) | (27) | (33)
Amortization: |  |  |  |
Actuarial losses | 0 | 6 | (1) | 19
Prior Service Credit | 0 | 0 | 0 | 0
Total net plan costs (benefits) | 2 | 4 | 3 | 11
Other Postretirement Benefits Plan | United States |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost |  |  |  |
Service cost - benefits earned during the period | 0 | 0 | 0 | 0
Interest cost on benefit obligation | 1 | 1 | 3 | 2
Expected return on plan assets | (1) | (1) | (3) | (4)
Amortization: |  |  |  |
Actuarial losses | 0 | 0 | 0 | (1)
Prior Service Credit | 0 | (1) | (1) | (1)
Total net plan costs (benefits) | $ 0 | $ (1) | $ (1) | $ (4)

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