INCOME TAXES - Reconciliation of Tax Expense to Statutory Federal Income Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Computed income tax benefit	$ (61.3)	$ (57.2)
State and local taxes, net of U.S. federal income tax benefit	(2.9)	6.1
Foreign and U.S. tax effects attributable to operations outside the U.S.	(9.3)	(6.5)
Net establishment (release) of valuation allowance	75.0	(1.2)
Net release of uncertain tax positions	(4.3)	(2.8)
Foreign dividends and earnings taxable in the U.S.	12.8	1.8
Impairment for which there is no tax benefit	4.3	0.4
Tax effect of basis reclassification	0.0	23.7
Impact of the Tax Act	(7.7)	47.9
Other	(4.4)	9.6
Total provision for income taxes	$ 2.2	$ 21.8	[1]

[1] Adjusted as a result of the adoption of certain accounting pronouncements during 2018. See Note 1, "Description of Business and Summary of Significant Accounting Policies - Recently Adopted Accounting Pronouncements," for details of these adjustments.