INCOME TAXES - Deferred tax assets and liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Accrued compensation and benefits	$ 20.2	$ 19.3
Property, equipment and technology, net	14.6	12.7
Investments	0.0	83.7
Operating leases	40.4	42.6
Other	88.7	84.2
Subtotal	163.9	242.5
Valuation allowances	(17.0)	(11.8)
Total deferred tax assets	146.9	230.7
Deferred tax liabilities:
Intangibles	(240.2)	(384.7)
Property, equipment and technology, net	(19.0)	(17.4)
Investments	(33.8)	0.0
Prepaid expenses or assets	(4.5)	(4.4)
Operating leases	(31.9)	(33.9)
Total deferred tax liabilities	(329.4)	(440.4)
Net deferred tax liabilities	$ (182.5)	$ (209.7)