STOCK BASED COMPENSATION - Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Number of Options
Outstanding at beginning of year			5,334,803
Granted	31,538	74,742	1,040,107	935,276
Exercised			(437,584)
Forfeited			(186,507)
Canceled or expired			(7,950)
Outstanding at June 30, 2016	5,742,869		5,742,869
Exercisable at June 30, 2016	3,153,185		3,153,185
Weighted Average Exercise Price per Share
Outstanding at beginning of year			$ 92.02
Granted			110.93
Exercised			70.20
Forfeited			116.07
Canceled or expired			102.64
Outstanding at June 30, 2016	$ 96.32		96.32
Exercisable at June 30, 2016	$ 82.22		$ 82.22
Weighted Average Remaining Contractual Life
Outstanding at June 30, 2016			5 years 8 months 5 days
Exercisable at June 30, 2016			4 years 9 months
Total Aggregate Intrinsic Value
Outstanding at June 30, 2016	$ 85,756		$ 85,756
Exercisable at June 30, 2016	$ 80,141		$ 80,141