INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Tax Contingency [Line Items]
Liability for uncertain tax positions	$ 27.6	$ 27.6		$ 42.2
Liability for uncertain tax positions - current	1.7	1.7		1.9
Expected Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations and Settlement	1.7	1.7
Reduction relating to interest and penalties uncertain tax positions	(9.8)	(11.1)
Interest and penalties uncertain tax positions recognized		0.6	$ 1.4
Accrued interest and penalties uncertain tax positions	2.0	2.0		$ 4.0
Power Solutions [Member]
Income Tax Contingency [Line Items]
Reduction relating to settlement with taxing authorities	(11.2)	(13.9)
Reduction relating to interest and penalties uncertain tax positions		(2.6)
Interest and penalties uncertain tax positions recognized		3.9
Annual accrual for liability for uncertain tax positions	$ 0.6	$ 0.6