TREASURY STOCK (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Equity, Class of Treasury Stock [Line Items]
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 212,344
Remaining authorization to repurchase common stock	$ 4,000,000
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)	44,888	90,401
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation	$ 77,300	$ 117,200
Payments Related to Tax Withholding for Share-based Compensation	$ 69,800	99,500
Treasury stock, shares (in shares)	13,315,844		13,190,929
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	80,027
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 135,000
Treasury Stock Repurchased but unsettled by period end	5,600
Treasury Stock Repurchased but unsettled by period end, amount	$ 10,000
Repurchase Program (Q12017) [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock acquired repurchase authorization additional value	$ 2,000,000