STOCK-BASED COMPENSATION (Schedule of Assumed Stock Options) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 247,395	$ 186,425	$ 140,526
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised, total intrinsic value	$ 46,300	$ 49,200	$ 281,800
Assumed unvested employee stock options vesting during period (in shares)	38,689	41,524	65,293
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value	$ 24,400	$ 24,200	$ 30,900
Stock-based compensation	24,900	$ 24,700	$ 30,900
Total future compensation cost related to unvested options	$ 9,700
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 4 months
Number of Shares
Balance, (in shares)	146,385.000	137,708.000	71,001
Assumed in acquisitions (in shares)	1,422	61,897	540,179
Exercised (in shares)	(52,697)	(51,003)	(449,670)
Forfeited (in shares)	(6,006)	(2,217)	(23,802)
Balance, (in shares)	89,104.000	146,385.000	137,708.000	71,001
Weighted Average Exercise Price
Balance, (in dollars per share)	$ 380.05	$ 315.36	$ 19.73
Assumed in acquisitions (in dollars per share)	230.37	457.67	260.96
Exercised (in dollars per share)	355.85	293.59	194.68
Forfeited (in dollars per share)	511.87	517.91	478.83
Balance, (in dollars per share)	$ 383.03	$ 380.05	$ 315.36	$ 19.73
Aggregate Intrinsic Value (000's)
Aggregate Intrinsic Value	$ 79,474	$ 111,277	$ 116,686	$ 42,647
Weighted Average Remaining Contractual Term	5 years 5 months	6 years 6 months	6 years 7 months	1 year 3 months
Vested and exercisable
Number of Shares	72,654
Weighted Average Exercise Price (in dollars per share)	$ 354.59
Aggregate Intrinsic Value	$ 66,868
Weighted Average Remaining Contractual Term	5 years
Vested and exercisable and expected to vest thereafter, net of estimated forfeitures
Number of Shares	88,687
Weighted Average Exercise Price (in dollars per share)	$ 383.06
Aggregate Intrinsic Value	$ 79,099
Weighted Average Remaining Contractual Term	5 years 5 months
Employee Stock Option | Assumed in an acquisition
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Acquisition date fair value of assumed options	$ 1,400
Acquisition date fair value per share of assumed stock options	$ 1,015.81