DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting assets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative assets
Gross Amount Recognized	$ 213.8	$ 289.9
Gross Amounts Not Offset Permitted Under Master Netting Agreements	(103.4)	(142.5)
Net Amount	110.4	147.4
Derivative liabilities
Gross Amount Recognized	204.7	350.2
Gross Amounts Not Offset Permitted Under Master Netting Agreements	(103.4)	(142.5)
Net Amount	$ 101.3	$ 207.7