TREASURY STOCK PURCHASE (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Apr. 07, 2013 April 2013 Repurchase Plan	Jun. 30, 2014 April 2013 Repurchase Plan	Dec. 31, 2013 April 2013 Repurchase Plan
TREASURY STOCK PURCHASE
Maximum amount of common stock the board of directors authorized to repurchase			$ 200.0
Common stock repurchased (in shares)				0	951,000
Average purchase price (in dollars per share)					$ 56.98
Common stock repurchased					54.2
Number of shares repurchased of common stock from employees in lieu of cash or withholding taxes due	586	867
Cash payment for repurchase of common stock from employees in lieu of cash or withholding taxes due	$ 0.04	$ 0.06