TAXATION - Summary of (Provision) Benefit for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Federal	$ 164.0	$ 214.1	$ 287.5
State	42.7	50.2	68.7
Foreign	32.8	9.6	95.2
Current income tax (expense)/benefit	239.5	273.9	451.4
Federal	(235.3)	35.2	72.7
State	(44.1)	(1.1)	22.2
Foreign	(29.8)	14.2	(15.2)
Deferred income tax (expense)/benefit	(309.2)	48.3	79.7
Total income tax expense (benefit)	$ (69.7)	$ 322.2	$ 531.1