INCOME TAXES (Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Provision at Federal statutory rate	21.00%	21.00%	21.00%
State income taxes (net of federal income tax)	4.90%	5.60%	3.90%
Nondeductible/nontaxable items	0.90%	(0.10%)	0.10%
Rate differential from foreign jurisdictions	(0.40%)	0.00%	(0.20%)
Provision to return adjustment	(0.10%)	(0.10%)	(0.10%)
Adjustment to deferred tax assets and liabilities for change in tax rates	2.20%	0.10%	(0.50%)
Stock-based compensation	0.00%	0.00%	0.10%
Deferred tax asset valuation allowance	(23.20%)	(25.80%)	0.00%
Other	(0.30%)	(0.90%)	0.30%
Effective tax rate	5.00%	(0.20%)	24.60%
Less: net income attributable to noncontrolling interests	$ 84.5	$ 59.1	$ 55.8
Effective Income Tax Rate Reconciliation, Noncontrolling Interest Income (Loss), Percent	3.70%	(0.20%)	21.80%