INCOME TAXES (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective Tax Rate Reconciliation, Net Benefit from Discrete Items	$ 19.4	$ 2.9	$ 452.3
U.S Tax Cuts and Jobs Act Net Benefit Increase		$ 3.8
Effective Tax Rate Adjusted for Discrete Items	16.80%	25.70%	17.10%
Statutory federal tax rate	21.00%	21.00%	35.00%
U.S. Tax Cuts and Jobs Act Provisional Benefit			$ 437.9
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards	$ 70.0	$ 50.2
Deferred state tax benefits relating to net operating losses	12.5
State tax credit carryforward	20.3
Capital loss carry-forward	3.6
Deferred Tax Assets, Capital Loss Carryforwards	0.9
Deferred Tax Assets, Tax Credit Carryforwards, Foreign	5.4
Valuation allowance	182.1	147.4	121.4
Increases in Valuation Allowances in Foreign Jurisdictions	34.7
Unrecognized tax benefits [Abstract]
Unrecognized Tax Benefits	22.8	33.8	36.3
Impact on the effective tax rate, if recognized	22.4	33.0
Interest and penalties accrued	0.1	1.6
Interest and penalties expense (benefit)	(1.5)	$ 0.4	$ (1.8)
Reasonable possibility that unrecognized tax benefits will decrease over next twelve months	3.8
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carry-forward (NOL)	317.0
Deferred Tax Assets, Operating Loss Carryforwards	57.5
Operating Loss Carryforwards Subject to Expiration	58.1
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	14.1
Operating Loss Carryforwards Not Subject to Expiration	258.9
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration	$ 43.4