POSTRETIREMENT BENEFIT PLANS Postretirement Textuals (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	$ (3.7)	$ 0.0	$ (3.7)	$ 0.0
Defined Benefit Plan, Contributions by Employer			14.3	11.9
Reclassification of Postretirement Costs from AOCI, Net of Tax	3.6	1.2	5.9	3.5
Minimum [Member]
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year			2.0
Maximum [Member]
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year			4.0
Pension Plan [Member]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	$ (3.7)	$ 0.0	(3.7)	$ 0.0
Discretionary Pension Contribution			$ 5.0