EMPLOYEE BENEFIT PLANS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Defined Benefit Pension Plan [Member]
Summary of net periodic pension cost [Abstract]
Service cost	$ 0.4	$ 0.4
Interest cost	0.7	0.7
Expected return on plan assets	(0.7)	(0.6)
Amortization of acturial loss	0.2	0.2
Net periodic benefit cost	0.6	0.7
Supplementary Pension Plan [Member]
Summary of net periodic pension cost [Abstract]
Service cost	0.1	0.1
Interest cost	0.1	0.1
Expected return on plan assets	0	0
Amortization of acturial loss	0.1	0.1
Net periodic benefit cost	$ 0.3	$ 0.3