SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Supplemental Cash Flow Elements [Abstract] | ||
| Cash paid for income taxes, net of refunds received | $ (11.5) | $ 0.3 |
| Cash paid for interest | 3.3 | 0.5 |
| Change in operating lease right-of-use assets and lease liabilities | ||
| Operating lease right-of-use assets | 2.7 | 1.2 |
| Operating lease liabilities | (2.7) | (1.2) |
| Tenant improvement allowance not yet received | 6.5 | 0.0 |
| Purchases of property, plant and equipment and capitalization of intangible assets in accounts payable and accrued liabilities | $ 1.9 | $ 4.2 |