STOCK-BASED EMPLOYEE COMPENSATION (Schedule of Assumed Stock Options) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Number of Shares
Exercised (in shares)	(7,150)
Ending balance (in shares)	1,850
Weighted Average Exercise Price
Exercised (in dollars per share)	$ 22.42
Ending balance (in dollars per share)	$ 23.08
Aggregate Intrinsic Value	$ 2,100
Vested and exercisable as of September 30, 2014
Weighted Average Remaining Contractual Term, Exercisable	0 years 9 months
Employee Stock Option [Member] | Awards assumed in acquisitions [Member]
Number of Shares
Beginning balance (in shares)	128,708
Assumed in acquisitions	61,897
Exercised (in shares)	(36,322)
Forfeited (in shares)	(928)
Ending balance (in shares)	153,355	128,708
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 335.83
Assumed (in dollars per share)	$ 457.67
Exercised (in dollars per share)	$ 324.18
Forfeited (in dollars per share)	$ 599.98
Ending balance (in dollars per share)	$ 386.16	$ 335.83
Aggregate Intrinsic Value	118,453	106,386
Weighted Average Remaining Contractual Term	6 years 9 months	6 years 11 months
Vested and exercisable as of September 30, 2014
Number of Shares	80,425
Weighted Average Exercise Price (in dollars per share)	$ 289.79
Aggregate Intrinsic Value	69,873
Weighted Average Remaining Contractual Term, Exercisable	5 years 10 months
Vested and exercisable as of September 30, 2014 and unvested expected to vest thereafter, net of estimated forfeitures
Number of Shares	152,028
Weighted Average Exercise Price (in dollars per share)	$ 386.04
Aggregate Intrinsic Value	$ 117,447
Weighted Average Remaining Contractual Term	6 years 9 months