INCOME TAXES - OPERATING LOSS AND TAX CREDIT CARRYFORWARDS (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Operating Loss and Tax Credit Carryforwards
Alternative minimum tax credit carryforwards	$ 3.6	$ 1.5
Valuation allowance	12.6	4.1
U.S. Federal Income Tax
Operating Loss and Tax Credit Carryforwards
Net operating losses carryforwards	194.2	0.0
State Income Tax
Operating Loss and Tax Credit Carryforwards
Net operating losses carryforwards	192.4	0.0
Foreign Income Tax
Operating Loss and Tax Credit Carryforwards
Net operating losses carryforwards	$ 20.2	$ 14.6