LEASES - Lease Disclosure (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Finance Lease Cost:
Amortization on ROU assets for finance leases	$ 0.0
Interest on lease liabilities	0.0
Operating Lease Cost	10.6
Total Lease Cost	10.6
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	0.0
Operating cash flows from operating leases	11.0
Financing cash flows from finance leases	0.2
ROU assets for finance leases	1.5
ROU assets for operating leases	103.4
Amortization on ROU assets for operating leases	$ 5.9
Weighted-average remaining lease term - finance leases	2 years 4 months
Weighted-average remaining lease term - operating leases	6 years 5 months
Weighted-average discount rate - finance leases	6.10%
Weighted-average discount rate - operating leases	15.50%