FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Fixed-rate | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing liability: fixed-rate	$ 213.8	$ 216.4
Fixed-rate | Nonrecourse | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	725.0	739.2
Fixed-rate | Recourse | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	771.0	808.7
Fixed-rate | Level 3 | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing liability: fixed-rate	218.3	223.0
Fixed-rate | Level 3 | Nonrecourse | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	722.8	743.4
Fixed-rate | Level 3 | Recourse | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	767.8	804.8
Variable-rate | Recourse | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	406.4	418.8
Variable-rate | Level 3 | Recourse | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	416.9	427.6
2027 Convertible Note | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Convertible senior note	190.6	476.4
2027 Convertible Note | Level 2 | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Convertible senior note	249.7	643.7
2031 Convertible Note | Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Convertible senior note	1,000.0	0.0
2031 Convertible Note | Level 2 | Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Convertible senior note	$ 1,041.8	$ 0.0