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Defined benefit and 401(k) savings plan (Tables)
12 Months Ended
Dec. 31, 2024
Retirement Benefits [Abstract]  
Components of Net Periodic Pension Cost
Components of net periodic pension cost incurred during the years ended December 31, 2023 and 2022 were as follows:
Year Ended December 31,
2023 (1)
2022
Service cost$0.7 $1.9 
Interest cost0.3 0.1 
Expected return on plan assets(0.4)(0.8)
Amortization of loss— 0.1 
Amortization of prior service credit— (0.1)
Settlements— (0.4)
Net periodic benefit cost$0.6 $0.8 
(1) The Swiss Plan was sold as part of our travel health business to Bavarian Nordic, as described further in Note 3, “Divestitures”.