TREASURY STOCK (Details) - USD ($) shares in Thousands, $ in Millions			1 Months Ended	2 Months Ended	3 Months Ended	6 Months Ended
	Jun. 12, 2015	Apr. 07, 2013	Jun. 30, 2015	Jun. 12, 2015	Jun. 30, 2015	Jun. 30, 2015
TREASURY STOCK PURCHASE
Treasury stock shares cancelled	41,500					41,500
Treasury stock cancelled value	$ 1,482.6
Number of shares repurchased of common stock from employees in lieu of cash or withholding taxes due			1
Cash payment for repurchase of common stock from employees in lieu of cash or withholding taxes due			$ 0.1	$ 160.7
April 2013 Repurchase Plan
TREASURY STOCK PURCHASE
Common stock repurchased		$ 200.0
Common stock repurchased (in shares)					0