REVENUE RECOGNITION - Rollforward of contract liabilities (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($)
Revenue recognized from contract liabilities and remaining balance
Beginning Balance	$ 15.3
Cash Additions	20.1
Revenue Recognized	(19.7)
Ending Balance	15.7
Liquidity provider sliding scale
Revenue recognized from contract liabilities and remaining balance
Cash Additions	7.2
Revenue Recognized	(5.4)
Ending Balance	1.8
Other, net
Revenue recognized from contract liabilities and remaining balance
Beginning Balance	15.3
Cash Additions	12.9
Revenue Recognized	(14.3)
Ending Balance	$ 13.9