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BASIS OF PRESENTATION - Restricted Cash (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Dec. 31, 2023
Restricted Cash
Cash and cash equivalents	$ 423.7	$ 632.3
Restricted cash	51.4	48.5
Total cash and cash equivalents and restricted cash in the statement of cash flows	475.1	680.8	$ 818.6	$ 911.4
U.S. Markets
Restricted Cash
Cash and cash equivalents	362.7	513.0
Restricted cash	20.0	20.7
International markets
Restricted Cash
Cash and cash equivalents	61.0	119.3
Restricted cash	$ 31.4	$ 27.8