INCOME TAXES - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Net operating loss and credit carryforwards	$ 378.7	$ 338.3
Pension, other postretirement and postemployment benefits	8.9	9.1
Payroll and compensation	11.9	13.5
Working capital accruals	10.2	10.1
Accelerated depreciation	3.7	0.1
Other	53.1	44.3
Total deferred tax assets	466.5	415.4
Valuation allowance	(152.1)	(82.5)
Net deferred tax assets	314.4	332.9
Deferred tax liabilities:
Intangible assets recorded in acquisitions	33.4	39.4
Basis difference in affiliates	208.8	266.8
Other	6.9	4.1
Total deferred tax liabilities	249.1	310.3
Net deferred tax assets	$ 65.3	$ 22.6