BENEFIT PLANS (Reconciliation of Beginning and Ending Balances for Plan Assets Valued using Significant Unobservable Inputs) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Private Equity
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance at December 31, 2012	$ 36.0
Return on plan assets:
Unrealized	0
Realized	2.1
Purchases	7.1
Sales	(6.5)
Balance at December 31, 2013	38.7
Hedge Funds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance at December 31, 2012	89.1
Return on plan assets:
Unrealized	8.2
Realized	2.6
Purchases	0
Sales	(17.0)
Balance at December 31, 2013	82.9
Real Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Balance at December 31, 2012	11.1
Return on plan assets:
Unrealized	0
Realized	1.2
Purchases	0.4
Sales	(0.5)
Balance at December 31, 2013	$ 12.2