STOCK-BASED EMPLOYEE COMPENSATION (Schedule of Assumed Stock Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Vested and exercisable as of June 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures
Allocated Share-based Compensation Expense	$ 60,164	$ 35,168	$ 114,172	$ 73,971
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised, total intrinsic value			$ 26,400	$ 33,900
Share Based Compensation Arrangement By Share Based Payment Award Options Vested in Period Number Of Shares			22,352	15,363
Number of Shares
Beginning balance (in shares)			146,385
Assumed in acquisitions (in shares)			1,422
Exercised (in shares)			(31,986)
Forfeited (in shares)			(3,987)
Ending balance (in shares)	111,834.000		111,834.000		146,385
Weighted-Average Exercise Price
Beginning balance (in dollars per share)			$ 380.05
Assumed in acquisitions (in dollars per share)			230.37
Exercised (in dollars per share)			362.28
Forfeited (in dollars per share)			531.10
Ending balance (in dollars per share)	$ 377.83		$ 377.83		$ 380.05
Aggregate Intrinsic Value	$ 86,508		$ 86,508		$ 111,277
Weighted Average Remaining Contractual Term			6 years		6 years 6 months
Vested and exercisable as of June 30, 2015
Number of Shares	79,704		79,704
Weighted Average Exercise Price (in dollars per share)	$ 329.75		$ 329.75
Aggregate Intrinsic Value	$ 65,486		$ 65,486
Weighted Average Remaining Contractual Term, Exercisable			5 years 5 months
Vested and exercisable as of June 30, 2015 and unvested expected to vest thereafter, net of estimated forfeitures
Number of Shares	111,588		111,588
Weighted Average Exercise Price (in dollars per share)	$ 376.79		$ 376.79
Aggregate Intrinsic Value	$ 86,433		$ 86,433
Weighted Average Remaining Contractual Term			6 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value			$ 15,100	$ 6,500
Allocated Share-based Compensation Expense	$ 7,600	$ 2,700	$ 15,000	$ 6,800