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v3.25.2

Pension and Other Postretirement Benefits (Tables) | 3 Months Ended
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Jul. 31, 2025
Retirement Benefits [Abstract] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | The following table shows the components of the net cost recognized for our U.S. pension plans. Similar information for other defined benefit plans is not presented due to immateriality.
|  |  | Three Months Ended
|  |  | July 31,
(Dollars in millions) |  |  |  |  | 2024 |  | 2025
Service cost |  |  |  |  | $ | 4 |  |  | $ | 3 |
Interest cost |  |  |  |  | 9 |  |  | 8 |
Expected return on plan assets |  |  |  |  | (10) |  |  | (9) |
Amortization of net actuarial loss |  |  |  |  | 1 |  |  | 1 |
Settlement charge |  |  |  |  | — |  |  | 19 |
Net cost |  |  |  |  | $ | 4 |  |  | $ | 22 |

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-5 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 20 -Topic 715 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-3 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-4 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-2 + Details
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