TREASURY STOCK (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Equity, Class of Treasury Stock [Line Items]
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 558,668
Treasury Stock Repurchased but unsettled by period end	27,320
Treasury Stock Repurchased but unsettled by period end, amount	$ 33,500
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)	119,509	57,332
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation	$ 155,800	$ 70,900
Treasury stock, shares (in shares)	12,865,743		12,427,945
Repurchase Program (Q12016) [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock acquired repurchase authorization additional value	$ 3,000,000
Treasury Stock Shares Acquired Excluding Shares Paid for Tax Withholding for Share-based Compensation	318,257
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 402,900
Remaining authorization of repurchase common stock	$ 2,600,000