INCOME TAXES - Income Before Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loss from continuing operations before income taxes:
United States	$ (217.0)	$ (357.0)
Foreign	16.3	(103.2)
(Loss) income from operations before income taxes	(200.7)	(460.2)
Provision for income taxes:
United States federal	4.8	143.5
State and local	0.5	8.1
Foreign	0.9	7.2
Total provision for income taxes	6.2	158.8
Current:
United States federal	4.8	3.5
State and local	1.4	1.8
Foreign	20.0	(2.0)
Current	26.2	3.3
Deferred:
United States federal	0.0	140.1
State and local	(0.9)	6.3
Foreign	(19.1)	9.1
Deferred	$ (20.0)	$ 155.5