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Employee Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2025
Retirement Benefits [Abstract] |
Schedule Of Defined Benefit Plans Disclosures Text Block | The components of net periodic benefit cost, included in other operating expenses on the Company’s condensed consolidated statements of income, for the three months ended March 31, 2025 and 2024 were as follows (dollars in millions):
|  | Pension Benefits |  | Other Benefits
|  | Three months ended March 31, |  | Three months ended March 31,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Service cost |  | $ | 4 |  |  | $ | 3 |  |  | $ | — |  |  | $ | — |
Interest cost |  | 3 |  |  | 3 |  |  | 1 |  |  | 1 |
Expected return on plan assets |  | (4) |  |  | (3) |  |  | — |  |  | — |
Amortization of prior service cost (credit) |  | — |  |  | — |  |  | — |  |  | — |
Amortization of prior actuarial losses |  | — |  |  | 1 |  |  | — |  |  | — |
Net periodic benefit cost |  | $ | 3 |  |  | $ | 4 |  |  | $ | 1 |  |  | $ | 1 |

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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://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 2: 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 3: 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 4: 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 5: 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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