ACCRUED EXPENSES AND OTHER (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Accrued expenses and other [Abstract]
Employee compensation and benefits	$ 527.1	$ 735.5
Accrued taxes payable	146.1	239.6
Accrued pass through expenses	136.5	149.1
Other	259.1	279.9
Total accrued expenses and other	$ 1,068.8	$ 1,404.1