TREASURY STOCK (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017	Dec. 31, 2016	Mar. 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	$ 556,228
Remaining authorization to repurchase common stock	$ 3,700,000
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation (in shares)	50,966	119,509
Repurchase of common shares to satisfy employee withholding tax obligations related to stock-based compensation	$ 88,600	$ 155,800
Payments Related to Tax Withholding for Share-based Compensation	$ 86,500	$ 151,200
Treasury stock, shares (in shares)	13,503,447			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	261,552
Treasury Stock Value Acquired, Cost Method Excluding Shares Paid Value for Tax Withholding for Share-based Compensation	$ 467,600
Treasury Stock Repurchased but unsettled by period end	7,409
Treasury Stock Repurchased but unsettled by period end, amount	$ 13,900
Repurchase Program (Q12017) [Member]
Equity, Class of Treasury Stock [Line Items]
Treasury stock acquired repurchase authorization additional value			$ 2,000,000