LEASE - MATURITIES OF OPERATING LEASE LIABILITIES AND FUTURE MINIMUM PAYMENTS (Details) - USD ($) $ in Millions	Mar. 31, 2019	Jan. 01, 2019
Operating Lease Liabilities, Payments Due [Abstract]
2019	$ 48.6
2020	59.8
2021	45.6
2022	35.6
2023	31.4
Thereafter	83.2
Total lease payments	304.2
Less: Interest	(53.2)
Present value of operating lease liabilities	251.0	$ 259.1
Less: Short-term portion	(54.3)
Long-term operating lease liabilities	196.7
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019	68.3
2020	59.2
2021	44.8
2022	34.7
2023	30.5
Thereafter	83.6
Total minimum lease payments	$ 321.1