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v3.23.3

Pension and Postretirement Benefits (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Domestic Plan |  |  |  |
Components of the net periodic cost for retirement and postretirement benefits |  |  |  |
Service cost | $ 5.4 | $ 6.1 | $ 16.1 | $ 18.5
Interest cost | 5.1 | 3.3 | 15.3 | 9.9
Expected return on plan assets | (6.0) | (6.3) | (18.0) | (19.0)
Amortization of unrecognized prior service cost and other costs | 0.0 | 0.0 | 0.1 | 0.1
Amortization of unrecognized net loss | 0.0 | 0.9 | 0.0 | 2.6
Net periodic cost recognized | 4.5 | 4.0 | 13.5 | 12.1
Foreign Plan |  |  |  |
Components of the net periodic cost for retirement and postretirement benefits |  |  |  |
Service cost | 1.2 | 1.3 | 3.5 | 4.3
Interest cost | 2.9 | 1.3 | 8.9 | 4.6
Expected return on plan assets | (1.6) | (1.2) | (5.0) | (4.1)
Amortization of unrecognized prior service cost and other costs | (0.1) | (0.1) | 0.1 | 0.2
Amortization of unrecognized net loss | 0.4 | 0.5 | 1.0 | 1.9
Net periodic cost recognized | 2.8 | 1.8 | 8.5 | 6.9
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 | 0.6 | 0.3
Expected return on plan assets | 0.0 | 0.0 | 0.0 | 0.0
Amortization of unrecognized prior service cost and other costs | 0.0 | 0.0 | 0.1 | 0.1
Amortization of unrecognized net loss | 0.0 | 0.1 | 0.0 | 0.2
Net periodic cost recognized | $ 0.2 | $ 0.2 | $ 0.7 | $ 0.6

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