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v3.21.1

Pension Benefit Plans | 3 Months Ended
--- | ---
Mar. 31, 2021
Pension Benefit Plans |
Pension Benefit Plans | 7. Pension Benefit Plans The components of the net periodic pension cost for the three months ended March 31, 2021 and 2020 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | U.S. | ​ | Non-U.S. |
​ |  | 2021 |  | 2020 |  | 2021 |  | 2020 |
Service cost | ​ | $ | 3 | ​ | $ | 3 | ​ | $ | 3 | ​ | $ | 3 | ​
Interest cost | ​ |  | 10 | ​ |  | 12 | ​ |  | 5 | ​ |  | 7 | ​
Expected asset return | ​ | ​ | (21) | ​ | ​ | (21) | ​ | ​ | (11) | ​ | ​ | (12) | ​
Amortization of actuarial loss | ​ | ​ | 16 | ​ | ​ | 14 | ​ | ​ | 3 | ​ | ​ | 3 | ​
Net periodic pension cost | ​ | $ | 8 | ​ | $ | 8 | ​ | $ | — | ​ | $ | 1 | ​
​ The components of pension expense, other than the service cost component, are included in Other expense, net on the Condensed Consolidated Results of Operations.

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