DERIVATIVE FINANCIAL INSTRUMENTS - Offsetting assets (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivative assets
Gross Amount Recognized	$ 323.4	$ 120.8
Gross Amounts Not Offset, Permitted Under Master Netting Agreements	(162.9)	(78.6)
Net Amount	160.5	42.2
Derivative liabilities
Gross Amount Recognized	377.9	176.5
Gross Amounts Not Offset Permitted Under Master Netting Agreements	(162.9)	(78.6)
Net Amount	$ 215.0	$ 97.9