OPERATING LEASES, LEASE COST (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
OPERATING LEASES [Abstract]
Operating lease cost	$ 4.3	$ 2.7	$ 8.5	$ 5.7
Short-term lease cost	$ 0.0	$ 0.1	$ 0.1	$ 0.4
Weighted-average remaining lease term	4 years 2 months 12 days	4 years 1 month 6 days	4 years 2 months 12 days	4 years 1 month 6 days
Weighted-average discount rate	3.80%	4.00%	3.80%	4.00%
Lessee, Operating Lease, Lease Not Yet Commenced, ROU Asset	$ 2.9		$ 2.9