Stock-based compensation - other information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Other information about options outstanding | ||||
| Remaining expense to be recognized | $ 87.1 | $ 87.1 | ||
| Weighted average period over which remaining expense will be recognized (in years) | 1 year 6 months | |||
| Stock-based compensation expense | $ 24.0 | $ 27.9 | ||
| Stock options | ||||
| Other information about options outstanding | ||||
| Contractual life (in years) | 10 years | |||
| Stock options | Maximum | ||||
| Other information about options outstanding | ||||
| Award vesting period (in years) | 3 years | |||
| RSUs | ||||
| Other information about options outstanding | ||||
| Stock-based compensation expense | $ 0.1 | $ 3.7 | $ (0.2) | $ 7.0 |
| RSUs | Minimum | ||||
| Other information about options outstanding | ||||
| Award vesting period (in years) | 1 year | |||
| RSUs | Maximum | ||||
| Other information about options outstanding | ||||
| Award vesting period (in years) | 3 years | |||