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Postretirement benefit plans | 3 Months Ended
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Mar. 31, 2022
Retirement Benefits [Abstract] |
Postretirement benefit plans | Postretirement benefit plansExpenses related to defined benefit and retiree health care benefit plans are as follows:
| U.S. Defined Benefit |  | U.S. Retiree Health Care |  | Non-U.S. Defined Benefit
For Three Months Ended March 31, | 2022 |  | 2021 |  | 2022 |  | 2021 |  | 2022 |  | 2021
Service cost | $ | 4 |  |  | $ | 5 |  |  | $ | 1 |  |  | $ | 1 |  |  | $ | 7 |  |  | $ | 9 |
Interest cost | 6 |  |  | 8 |  |  | 3 |  |  | 3 |  |  | 10 |  |  | 9 |
Expected return on plan assets | (8) |  |  | (8) |  |  | (4) |  |  | (3) |  |  | (18) |  |  | (20) |
Recognized net actuarial loss | — |  |  | 4 |  |  | — |  |  | — |  |  | — |  |  | 2 |
Net periodic benefit costs | 2 |  |  | 9 |  |  | — |  |  | 1 |  |  | (1) |  |  | — |
Settlement losses | 2 |  |  | 4 |  |  | — |  |  | — |  |  | 1 |  |  | 1 |
Total, including other postretirement losses | $ | 4 |  |  | $ | 13 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |

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