ACCOUNTING POLICIES (Detail Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended				12 Months Ended					8 Months Ended	12 Months Ended	2 Months Ended	12 Months Ended					12 Months Ended		8 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2011	Dec. 31, 2013 Goodwill [Member]	Dec. 31, 2012 Goodwill [Member]	Dec. 31, 2011 Goodwill [Member]	Dec. 31, 2013 Customers, customer contracts and relationships [Member] KA Steel [Member]	Aug. 22, 2012 Customers, customer contracts and relationships [Member] KA Steel [Member]	Aug. 31, 2007 Customers, customer contracts and relationships [Member] Pioneer [Member]	Dec. 31, 2013 Customers, customer contracts and relationships [Member] Pioneer [Member]	Feb. 28, 2011 Customers, customer contracts and relationships [Member] SunBelt [Member]	Dec. 31, 2013 Customers, customer contracts and relationships [Member] SunBelt [Member]	Dec. 31, 2013 Trademarks [Member]	Dec. 31, 2012 Trademarks [Member]	Dec. 31, 2011 Trademarks [Member]	Aug. 22, 2013 Trademarks [Member] KA Steel [Member]	Dec. 31, 2013 Other Intangible Assets [Member] KA Steel [Member]	Aug. 22, 2012 Other Intangible Assets [Member] KA Steel [Member]	Aug. 31, 2007 Other Intangible Assets [Member] Pioneer [Member]	Dec. 31, 2013 Other Intangible Assets [Member] Pioneer [Member]
Accounting Policies [Abstract]
Expense for earnout liability	$ 7.9	$ 11.5	$ 6.7
Gain (Loss) on Sale of Equity Investments	6.5	0	0
Pretax gain on acquisition of SunBelt			181.4
Percentage of ownership in SunBelt prior to acquiring remaining 50%				50.00%
Amount of bond proceeds with trustee classified as noncurrent assets	4.2	11.9
Asset retirement obligation non-current	47.3	46.5
Asset Retirement Obligation, Revision of Estimate	1.6	2.5
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill and Intangible Asset Impairment					0	0	0							0	0	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles									128.0										0.4
Acquired intangible assets										19.0		5.8								1.2
Indefinite-Lived Intangible Assets (Excluding Goodwill)																	10.9
Amortization period (in years)								10 years 0 months 0 days			15 years 0 months 0 days		15 years 0 months 0 days					4 years 0 months 0 days			5 years 0 months 0 days
Amortization expense	14.6	6.5	1.9
Amortization expense expected in year one	14.6
Amortization expense expected in year two	14.6
Amortization expense expected in year three	14.6
Amortization expense expected in year four	14.5
Amortization expense expected in year five	$ 14.5
Average remaining life expectancy of the inactive participants in the defined benefit pension plan (in years)	18	18.0