Stock-based compensation - Narrative (Details) - Restricted Stock Units (RSUs) $ in Millions	6 Months Ended
	Jun. 30, 2025 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense, RSUs	$ 213.6
Weighted average period over which unrecognized compensation expense would be recognized (in years)	2 years 10 months 24 days
Fair value of RSUs vested	$ 68.9
Omnibus Incentive Plan 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years