POSTRETIREMENT BENEFIT PLANS Postretirement Textuals (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 7.1	$ 6.8
Reclassification of Postretirement Costs from AOCI, Net of Tax	$ 0.5	$ 1.1	1.1	$ 2.2
Minimum [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	7.0		7.0
Maximum [Member]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	$ 9.0		$ 9.0