Summary of significant accounting policies - Goodwill (Details)		12 Months Ended
	Oct. 01, 2024 USD ($)	Dec. 31, 2024 USD ($) reportingUnit	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Accounting Policies [Abstract]
Number of reporting units | reportingUnit		1
Goodwill, impairment loss | $	$ 0	$ 0	$ 0	$ 0