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v3.23.2

Long-term Employee Benefits (Details) - Pension Plan - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Net periodic benefit cost |  |  |  |
Service cost | $ 1.4 | $ 1.6 | $ 2.9 | $ 3.3
Interest cost | 5.0 | 2.5 | 9.7 | 4.9
Expected return on plan assets | (2.8) | (3.1) | (5.5) | (6.3)
Amortization of actuarial losses, net | 0.2 | 0.8 | 0.4 | 1.7
Amortization of prior service cost, net | (0.1) | (0.1) | (0.1) | (0.1)
Net periodic benefit cost | $ 3.7 | $ 1.7 | $ 7.4 | $ 3.5

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