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Pension Benefit Plans (Tables) | 3 Months Ended
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Mar. 31, 2022
Pension Benefit Plans |
Defined Benefit Plans and Other Postretirement Benefit Plans |
Components of net periodic pension cost | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | U.S. | ​ | Non-U.S. |
​ | ​ | Three months ended March 31, | ​ | Three months ended March 31, | ​
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021 |
Service cost | ​ | $ | 3 | ​ | $ | 3 | ​ | $ | 2 | ​ | $ | 3 | ​
Interest cost | ​ |  | 9 | ​ |  | 10 | ​ |  | 6 | ​ |  | 5 | ​
Expected asset return | ​ | ​ | (15) | ​ | ​ | (21) | ​ | ​ | (11) | ​ | ​ | (11) | ​
Amortization of actuarial loss | ​ | ​ | 11 | ​ | ​ | 16 | ​ | ​ | 3 | ​ | ​ | 3 | ​
Net periodic pension cost | ​ | $ | 8 | ​ | $ | 8 | ​ | $ | — | ​ | $ | — | ​

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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