DEBT - Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Components of interest expense:
Contractual interest	$ 12.7	$ 12.2
Amortization of debt discount and issuance costs	0.6	0.6
Interest expense	13.3	12.8
Interest income	(17.7)	(8.4)
Interest (income) expense, net	$ (4.4)	$ 4.4