SUPPLEMENTAL BALANCE SHEET INFORMATION - Other Noncurrent Assets (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Rent guarantee deposits	$ 80.6	$ 80.9
Equity method investments	59.1	59.7
Defined benefit plan assets	55.4	55.7
Cost method investments	45.0	45.1
Prepaid expenses	15.7	10.9
Debt issuance costs	6.1	6.5
Other	24.4	30.3
Other noncurrent assets	$ 286.3	$ 289.1