TREASURY STOCK (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended
	Aug. 04, 2015	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014
Subsequent Event [Line Items]
Treasury Stock Shares Acquired Excluding Shares Paid for Tax Withholding for Share-based Compensation		917,890
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation		$ 1,100.0
Treasury stock acquired repurchase authorization additional value				$ 3,000.0
Treasury Stock Repurchased but unsettled by period end		155,129
Treasury stock value acquired, excluding shares paid value for tax withholding for share-based compensation		$ 175.8
Remaining authorization of repurchase common stock		$ 1,900.0
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)		57,332	72,832
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation		$ 70.9	$ 97.3
Treasury stock, shares (in shares)		10,863,246			9,888,024
Subsequent Event [Member]
Subsequent Event [Line Items]
Treasury Stock Shares Acquired Excluding Shares Paid for Tax Withholding for Share-based Compensation	436,182
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 500.0