REVENUES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Disaggregation of Revenue [Line Items]
Other revenue	$ 9.5	$ 5.5
Revenue recognized	12.0	3.8
LIFT Academy
Disaggregation of Revenue [Line Items]
Other revenue	4.9	$ 5.4
Related Party
Disaggregation of Revenue [Line Items]
Contract liability, current	35.0		$ 35.9
Contract liability, non-current	$ 97.3		$ 103.2