INCOME TAXES (RECONCILIATION OF UNRECOGNIZED TAX BENEFITS) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 234.2	$ 228.7
Increase based on tax positions taken in prior years	3.4	5.5
Decrease in unrecognized tax benefits related to settlements with taxing authorities	(237.6)	0.0
Balance at end of year	$ 0.0	$ 234.2