SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 5) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net Income
Net income from continuing operations	$ 15.7	$ 19.0	$ 15.3	$ 2.0	$ 6.7	$ 18.4	$ 17.7	$ 3.0	$ 52.0	$ 45.8	$ 70.5
(Loss) income from discontinued operations	(0.1)	0.1	(7.5)	1.4	(5.1)	(9.7)	1.0	2.2	(6.1)	(11.6)	21.6
Net Income	15.6	19.1	7.8	3.4	1.6	8.7	18.7	5.2	45.9	34.2	92.1
Weighted Average Common Shares
Income From Continuing Operations, Basic (in shares)									42.3	41.6	41.2
(Loss) income from discontinued operations, Basic (in shares)									42.3	41.6	41.2
Effect of Dilutive Securities (in shares)									0.4	0.4	0.3
Income From Continuing Operations, Diluted (in shares)									42.7	42.0	41.5
(Loss) income from discontinued operations, Diluted (in shares)									42.7	42.0	41.5
Per Common Share Amount, Basic
Income from continuing operations (in dollars per share)	$ 0.37	$ 0.45	$ 0.36	$ 0.05	$ 0.16	$ 0.44	$ 0.42	$ 0.07	$ 1.23	$ 1.10	$ 1.71
(Loss) income from discontinued operations (in dollars per share)									$ (0.14)	$ (0.28)	$ 0.52
Net income (in dollars per share)	$ 0.37	$ 0.45	$ 0.18	$ 0.08	$ 0.04	$ 0.21	$ 0.45	$ 0.12	$ 1.09	$ 0.82	$ 2.23
Per Common Share Amount, Diluted
Income from continuing operations (in dollars per share)	$ 0.37	$ 0.45	$ 0.36	$ 0.05	$ 0.16	$ 0.44	$ 0.42	$ 0.07	$ 1.22	$ 1.09	$ 1.70
(Loss) income from discontinued operations (in dollars per share)									$ (0.14)	$ (0.28)	$ 0.52
Net income (in dollars per share)	$ 0.36	$ 0.45	$ 0.18	$ 0.08	$ 0.04	$ 0.21	$ 0.44	$ 0.12	$ 1.08	$ 0.81	$ 2.22
Income Taxes
Increase in income taxes									$ 1.7
Stock options
Earnings Per Share ("EPS")
Antidilutive securities excluded from computation of earnings per share									0.5	1.4	1.6