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v3.23.2

Pension and Postretirement Benefits (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Domestic Plan |  |  |  |
Components of the net periodic cost for retirement and postretirement benefits |  |  |  |
Service cost | $ 5.7 | $ 6.1 | $ 10.7 | $ 12.4
Interest cost | 5.0 | 3.2 | 10.2 | 6.6
Expected return on plan assets | (5.7) | (6.2) | (12.0) | (12.7)
Amortization of unrecognized prior service cost and other costs | 0.1 | 0.0 | 0.1 | 0.1
Amortization of unrecognized net loss | 0.0 | 0.7 | 0.0 | 1.7
Net periodic cost recognized | 5.1 | 3.8 | 9.0 | 8.1
Foreign Plan |  |  |  |
Components of the net periodic cost for retirement and postretirement benefits |  |  |  |
Service cost | 1.2 | 1.4 | 2.3 | 3.0
Interest cost | 3.1 | 1.6 | 6.0 | 3.3
Expected return on plan assets | (1.8) | (1.3) | (3.4) | (2.9)
Amortization of unrecognized prior service cost and other costs | 0.1 | 0.2 | 0.2 | 0.3
Amortization of unrecognized net loss | 0.3 | 0.7 | 0.6 | 1.4
Net periodic cost recognized | 2.9 | 2.6 | 5.7 | 5.1
Postretirement Medical Benefits |  |  |  |
Components of the net periodic cost for retirement and postretirement benefits |  |  |  |
Service cost | 0.0 | 0.0 | 0.0 | 0.0
Interest cost | 0.2 | 0.1 | 0.4 | 0.2
Expected return on plan assets | 0.0 | 0.0 | 0.0 | 0.0
Amortization of unrecognized prior service cost and other costs | 0.1 | 0.0 | 0.1 | 0.1
Amortization of unrecognized net loss | 0.0 | 0.1 | 0.0 | 0.1
Net periodic cost recognized | $ 0.3 | $ 0.2 | $ 0.5 | $ 0.4

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