FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value of Long-Term Debt (Details) - USD ($) $ in Millions	Jun. 30, 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	787.6	739.2
Fixed-rate \| Recourse \| Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	724.6	808.7
Fixed-rate \| Level 3 \| Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financing liability: fixed-rate	220.4	223.0
Fixed-rate \| Level 3 \| Nonrecourse \| Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	766.3	743.4
Fixed-rate \| Level 3 \| Recourse \| Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	715.9	804.8
Variable-rate \| Recourse \| Carrying Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	391.1	418.8
Variable-rate \| Level 3 \| Recourse \| Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans payable	399.1	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	239.2	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	$ 1,081.8	$ 0.0