PENSION PLANS AND RETIREMENT BENEFITS (Details Textuals) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Compensation and Retirement Disclosure [Abstract]
Contribution to an individual retirement account as a percentage of employee's eligible compensation under age 45 (in hundredths)	5.00%		5.00%
Contribution to an individual retirement account as a percentage of employee's eligible compensation age 45 and older (in hundredths)	7.50%		7.50%
Defined contribution pension plans expense	$ 4.3	$ 4.0	$ 8.4	$ 7.8
Employer's contribution to defined benefit pension			0.4	0.5
KA Steel Multi-Employer Withdrawal Liability	$ 9.0		$ 9.0