Employee benefit plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
U.S.
Defined Contribution Plan Disclosure [Line Items]
Employer contribution (as percent)	3.00%
Contributions	$ 6.2	$ 6.5	$ 5.4
Foreign Plan
Defined Contribution Plan Disclosure [Line Items]
Contributions	$ 3.5	$ 3.2	$ 2.5