REVENUE Contract Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Contract with Customer, Asset and Liability [Abstract]
Current contract assets	$ 22.6	$ 21.8
Current Contract Assets, Percentage Change from Prior Period	3.70%
Contract with Customer, Asset, Net, Noncurrent	$ 0.7	0.7
Noncurrent Contract Assets, Percentage Change from Prior Period	0.00%
Contract with Customer, Liability	$ (58.9)	(61.0)
Current Contract Liabilities, Percentage Change from Prior Period	(3.40%)
Net Contract Liabilities	$ 35.6	$ 38.5
Net Contract Liability, Percentage Change from Prior Period	(7.50%)