EMPLOYEE BENEFIT PLANS (Details 5) (Pension Benefits, USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of changes in the fair value of pension plan assets
Beginning balance	$ 729.9
Net realized and unrealized gains (losses)	112.1	91.2
Ending balance	846.6	729.9
Level 3
Reconciliation of changes in the fair value of pension plan assets
Beginning balance	2.7	3.9
Net realized and unrealized gains (losses)	(0.3)	0.6
Purchases	0.3	0.9
Sales	(1.3)	(1.2)
Transfers into Level 3	0.8
Transfers out of Level 3	(0.2)	(1.5)
Ending balance	2.0	2.7
Net unrealized (gains) losses related to assets still held at the end of the period	(0.3)	0.2
Foreign government debt
Reconciliation of changes in the fair value of pension plan assets
Ending balance	10.4	12.9
Foreign government debt | Level 3
Reconciliation of changes in the fair value of pension plan assets
Beginning balance	2.2	2.8
Net realized and unrealized gains (losses)	(0.1)	0.5
Purchases	0.3	0.6
Sales	(1.1)	(1.0)
Transfers into Level 3	0
Transfers out of Level 3	0	(0.7)
Ending balance	1.3	2.2
Net unrealized (gains) losses related to assets still held at the end of the period	(0.1)	0.2
Corporate debt
Reconciliation of changes in the fair value of pension plan assets
Ending balance	135.5	104.1
Corporate debt | Level 3
Reconciliation of changes in the fair value of pension plan assets
Beginning balance	0.5	1.1
Net realized and unrealized gains (losses)	(0.2)	0.1
Purchases	0	0.3
Sales	(0.2)	(0.2)
Transfers into Level 3	0.8
Transfers out of Level 3	(0.2)	(0.8)
Ending balance	0.7	0.5
Net unrealized (gains) losses related to assets still held at the end of the period	$ (0.2)	$ 0