Defined Benefit Plan, Other Cost (Credit)

  


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|   | Postretirement Benefits |
| (DOLLARS IN MILLIONS) | 2021 |  | 2020 |  | 2019 |
| Components of net periodic benefit cost |  |  |  |  |  |
| Service cost for benefits earned | $ | 1  |  |  | $ | 1  |  |  | $ | 1  |  |
| Interest cost on projected benefit obligation | 7  |  |  | 2  |  |  | 2  |  |
| Net amortization and deferrals | (20) |  |  | (5) |  |  | (5) |  |
| Total credit | $ | (12) |  |  | $ | (2) |  |  | $ | (2) |  |
| Changes in plan assets and benefit obligations recognized in OCI |  |  |  |  |  |
| Net actuarial loss  | $ | (3) |  |  | $ | 5  |  |  |  |
| Recognized actuarial loss | (2) |  |  | (1) |  |  |  |
|  |  |  |  |  |  |
| Recognized prior service credit | 6  |  |  | 6  |  |  |  |
| Total recognized in OCI (before tax effects) | $ | 1  |  |  | $ | 10  |  |  |  |

The amounts of service cost, interest cost, expected return and net amortization and deferrals have been updated to reflect the correction of certain prior period amounts. The aggregate amount of the correction was approximately $17 million for the year ended December 31, 2021.

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The weighted-average actuarial assumptions used to determine expense at December 31 of each year are:

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|  | U.S. Plans |  | Non-U.S. Plans |
| 2021 |  | 2020 |  | 2019 |  | 2021 |  | 2020 |  | 2019 |
| Discount rate | 2.51  | % |  | 3.26  | % |  | 4.31  | % |  | 0.85  | % |  | 1.49  | % |  | 2.22  | % |
| Expected return on plan assets | 3.80  | % |  | 5.60  | % |  | 5.60  | % |  | 4.21  | % |  | 4.62  | % |  | 4.87  | % |
| Rate of compensation increase | 3.25  | % |  | 3.25  | % |  | 3.25  | % |  | 2.56  | % |  | 2.46  | % |  | 1.93  | % |

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