REVENUE - Summary of Revenue (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||||
|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Disclosure of disaggregation of revenue from contracts with customers [line items] | ||||||
| License and other revenue - total | [1] | $ 61.4 | $ 35.4 | $ 68.1 | $ 44.8 | |
| Total collaboration revenue | 326.1 | 219.7 | 624.5 | 405.3 | ||
| Total revenue | 387.5 | 255.1 | 692.6 | 450.1 | ||
| United States of America | ||||||
| Disclosure of disaggregation of revenue from contracts with customers [line items] | ||||||
| License and other revenue - total | 5.3 | 15.4 | 10.4 | 24.7 | ||
| Total collaboration revenue | 236.0 | 179.2 | 452.4 | 338.2 | ||
| Outside the United States of America | ||||||
| Disclosure of disaggregation of revenue from contracts with customers [line items] | ||||||
| License and other revenue - total | 56.1 | 20.0 | 57.7 | 20.1 | ||
| Total collaboration revenue | $ 90.1 | $ 40.5 | $ 172.1 | $ 67.1 | ||
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