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Pension Benefit Plans (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Retirement Benefits [Abstract] |  |  |  |
Service cost | $ 1.1 | $ 1.5 | $ 2.1 | $ 3.1
Interest cost | 1.5 | 1.5 | 3.0 | 3.1
Expected return on plan assets | (2.3) | (2.7) | (4.6) | (5.5)
Amortization of prior service cost | 0.0 | 0.1 | 0.0 | 0.1
Recognized actuarial loss | 1.3 | 2.1 | 2.9 | 4.2
Other | 0.0 | 0.0 | (0.1) | (0.3)
Settlements and curtailments | 0.2 | 0.0 | 0.3 | 0.7
Net periodic benefit cost | $ 1.8 | $ 2.5 | $ 3.6 | $ 5.4

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