BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Adoption of New Standard) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Cost of Goods and Services Sold	$ (538.2)	$ (467.9)	$ (1,328.3)	$ (1,147.2)
Selling, General and Administrative Expense	(24.6)	(31.1)	(77.8)	(81.8)
Miscellaneous - net	(5.9)	(19.6)	3.0	(16.9)
Operating Income (Loss)	129.7	34.7	326.2	109.1
Other non-operating income	0.8	0.1	2.3	0.4
NET INCOME (LOSS)	$ 52.9	$ (27.8)	53.2	$ 118.5
Estimated post adjustment [Member]
Cost of Goods and Services Sold			(1,327.0)
Selling, General and Administrative Expense			(83.6)
Miscellaneous - net			1.8
Operating Income (Loss)			320.5
Other non-operating income			8.0
NET INCOME (LOSS)			53.2
Estimated Adjustment [Member]
Cost of Goods and Services Sold			1.3
Selling, General and Administrative Expense			(5.8)
Miscellaneous - net			(1.2)
Operating Income (Loss)			(5.7)
Other non-operating income			5.7
NET INCOME (LOSS)			$ 0.0