PENSION PLANS AND RETIREMENT BENEFITS (Details 1) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Curtailment       $ (1.1)
Pension Benefits [Member]
       
Service Cost 1.5 1.6 4.6 4.8
Interest Cost 22.9 23.4 69.0 70.6
Expected return on plans' assets (34.9) (34.9) (104.7) (104.7)
Amortization of prior service cost 0.1 0.1 0.2 0.3
Recognized acturial loss 4.8 3.8 15.0 11.3
Curtailment     0 1.1
Net periodic benefit (income) cost (5.6) (6.0) (15.9) (16.6)
Other Postretirement Benefits [Member}
       
Service Cost 0.3 0.2 1.0 0.9
Interest Cost 0.7 0.7 2.4 2.6
Expected return on plans' assets 0 0 0 0
Amortization of prior service cost 0 0 (0.1) (0.1)
Recognized acturial loss 0.6 1.0 2.5 2.4
Curtailment     0 0
Net periodic benefit (income) cost $ 1.6 $ 1.9 $ 5.8 $ 5.8