DEFINED BENEFIT PLANS (Details) (Defined benefit pension plans, USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Defined benefit pension plans
Components of net periodic benefit cost
Service cost	$ 1.8	$ 1.5	$ 5.4	$ 4.6
Interest cost	0.6	0.5	1.8	1.5
Expected return on plan assets	(0.4)	(0.3)	(1.1)	(1.0)
Amortization of actuarial loss, prior service credit and other	0.2	0.1	0.5	0.3
Net periodic pension benefit cost	$ 2.2	$ 1.8	$ 6.6	$ 5.4