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Defined Benefit Pension Plans (Tables) | 9 Months Ended
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Sep. 30, 2023
Retirement Benefits [Abstract] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | The following table summarizes our net periodic pension cost for our defined benefit pension and postretirement plans during the three and nine months ended September 30, 2023 and 2022 (dollar amounts in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Service cost | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 3 |
Other components of net periodic pension cost 1: |  |  |  |  |  |  |
Interest cost | — |  |  | 2 |  |  | — |  |  | 5 |
Expected return on plan assets | — |  |  | (2) |  |  | — |  |  | (5) |
Amortization of prior service cost | — |  |  | — |  |  | — |  |  | — |
Amortization of net loss | — |  |  | 1 |  |  | — |  |  | 4 |
Net periodic pension costs before loss due to settlement | — |  |  | 2 |  |  | — |  |  | 7 |
Loss due to settlement | — |  |  | 4 |  |  | 6 |  |  | 4 |
Net periodic pension cost | $ | — |  |  | $ | 7 |  |  | $ | 6 |  |  | $ | 11 |
1Other components of net periodic pension cost are included in Other non-operating items on our Condensed Consolidated Statements of Income.
Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) | The changes recognized in Other comprehensive loss were as follows (dollar amounts in millions):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Net actuarial gain (loss) and prior service (cost) arising during the period, net of tax | $ | — |  |  | $ | (1) |  |  | $ | — |  |  | $ | (1) |
Amortization of actuarial loss, prior service cost and settlements, net of tax | — |  |  | 4 |  |  | 4 |  |  | 7 |
Total amounts recognized in Other comprehensive income | $ | — |  |  | $ | 3 |  |  | $ | 4 |  |  | $ | 6 |

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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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