PENSION PLANS (Details 9) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	$ 402.2	$ 352.6
Realized Gain/(Loss)	11.3	1.1
Unrealized Gain/(Loss) Relating to Assets Held at Period End	23.6	32.9
Purchases, Sales, and Settlements	(22.9)	15.6
Transfers In/(Out)	0	0
Balance, Ending Period	414.2	402.2
US Treasury Securities [Member]
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	5.6	5.5
Realized Gain/(Loss)	0.1	0
Unrealized Gain/(Loss) Relating to Assets Held at Period End	(1.1)	0.5
Purchases, Sales, and Settlements	(0.1)	(0.4)
Transfers In/(Out)	0	0
Balance, Ending Period	4.5	5.6
Corporate Debt Securities [Member]
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	12.2	2.9
Realized Gain/(Loss)	0	0.3
Unrealized Gain/(Loss) Relating to Assets Held at Period End	1.3	0.1
Purchases, Sales, and Settlements	8.0	8.9
Transfers In/(Out)	0	0
Balance, Ending Period	21.5	12.2
Hedge Funds, Equity [Member]
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	286.9	258.3
Realized Gain/(Loss)	0	0
Unrealized Gain/(Loss) Relating to Assets Held at Period End	29.0	25.6
Purchases, Sales, and Settlements	0	3.0
Transfers In/(Out)	0	0
Balance, Ending Period	315.9	286.9
Real Estate [Member]
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	38.2	33.9
Realized Gain/(Loss)	1.0	0.8
Unrealized Gain/(Loss) Relating to Assets Held at Period End	1.9	2.4
Purchases, Sales, and Settlements	(5.4)	1.1
Transfers In/(Out)	0	0
Balance, Ending Period	35.7	38.2
Private Equity Funds [Member]
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	18.5	16.8
Realized Gain/(Loss)	0.8	0
Unrealized Gain/(Loss) Relating to Assets Held at Period End	(0.5)	1.3
Purchases, Sales, and Settlements	(0.9)	0.4
Transfers In/(Out)	0	0
Balance, Ending Period	17.9	18.5
Absolute Return Strategies [Member]
Assets measured with significant unobservable input [Roll Forward]
Balance, Beginning Period	40.8	35.2
Realized Gain/(Loss)	9.4	0
Unrealized Gain/(Loss) Relating to Assets Held at Period End	(7.0)	3.0
Purchases, Sales, and Settlements	(24.5)	2.6
Transfers In/(Out)	0	0
Balance, Ending Period	$ 18.7	$ 40.8