LEASES - Balance Sheet Implication (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets
Operating right-of-use assets	$ 169.9	$ 175.4
Finance right-of-use assets	2.1	2.4
Total right-of-use assets	172.0	177.8
Current
Operating lease liabilities	45.4	45.7
Finance lease liabilities	0.9	1.0
Total current lease liabilities	46.3	46.7
Noncurrent
Operating lease liabilities	137.7	143.3
Finance lease liabilities	1.3	1.4
Total noncurrent lease liabilities	139.0	144.7
Total lease liability	$ 185.3	$ 191.4