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Pension Benefits (Tables) | 6 Months Ended
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Jun. 30, 2023
Retirement Benefits [Abstract] |
Components of Net Periodic Benefit Cost | The components of net periodic benefit cost associated with our U.S. pension plans are as follows:
| Quarter ended |  | Year to date
| 2023 |  | 2022 |  | 2023 |  | 2022
Service cost | $ | 1 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 3 |
Interest cost | 11 |  |  | 8 |  |  | 21 |  |  | 16 |
Expected return on plan assets | (13) |  |  | (11) |  |  | (25) |  |  | (23) |
Amortization of net (gain) / loss | (1) |  |  | 2 |  |  | (1) |  |  | 5 |
Amortization of prior service cost | 1 |  |  | 2 |  |  | 1 |  |  | 3 |
Net periodic benefit cost | $ | (1) |  |  | $ | 2 |  |  | $ | (2) |  |  | $ | 4 |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Subparagraph (h) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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