FAIR VALUE- Assets and Liabilities (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Assets:
Available-for-sale securities	$ 4.2	$ 4.3
Foreign exchange forward contracts	0.0	5.6
Total Assets	4.2	9.9
Liabilities:
Foreign exchange forward contracts	24.8	3.8
Total Liabilities	24.8	3.8
Level 1
Assets:
Available-for-sale securities	4.2	4.3
Foreign exchange forward contracts	0.0	0.0
Total Assets	4.2	4.3
Liabilities:
Foreign exchange forward contracts	0.0	0.0
Total Liabilities	0.0	0.0
Level 2
Assets:
Available-for-sale securities	0.0	0.0
Foreign exchange forward contracts	0.0	5.6
Total Assets	0.0	5.6
Liabilities:
Foreign exchange forward contracts	24.8	3.8
Total Liabilities	$ 24.8	$ 3.8