TAXATION - Schedule of Deferred Tax Recognized on Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Deferred tax assets:
Compensation and benefits	$ 95.6	$ 97.8
Lease obligations	66.7	67.2
Net operating loss carryforwards	154.3	124.4
Fixed assets	15.7	7.1
Accrued liabilities	34.4	37.1
Other	4.9	9.0
Total deferred tax assets	371.6	342.6
Valuation allowance	(98.9)	(93.5)
Deferred tax assets, net of valuation allowance	272.7	249.1
Deferred tax liabilities:
Goodwill and intangibles	(1,519.1)	(1,796.1)
Leased assets	(55.9)	(58.4)
Other	(21.8)	(27.3)
Total deferred tax liabilities	(1,596.8)	(1,881.8)
Net deferred tax liability	$ (1,324.1)	$ (1,632.7)