STOCK BASED COMPENSATION - Stock Option Activity (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Number of Options
Outstanding at beginning of year	5,540,482
Granted	963,483
Exercised	(424,881)
Forfeited	(62,170)
Canceled or expired	(1,108)
Outstanding at June 30, 2014	6,015,806
Exercisable at June 30, 2014	3,242,027
Vested and expected to vest at June 30, 2014	5,741,157
Weighted Average Exercise Price per Share
Outstanding at beginning of year	$ 70.29
Granted	$ 115.29
Exercised	$ 53.82
Forfeited	$ 92.48
Canceled or expired	$ 66.74
Outstanding at June 30, 2014	$ 78.43
Exercisable at June 30, 2014	$ 63.26
Vested and expected to vest at June 30, 2014	$ 77.35
Weighted Average Remaining Contractual Life
Outstanding at June 30, 2014	6 years 5 months 10 days
Exercisable at June 30, 2014	5 years 4 months 16 days
Total Aggregate Intrinsic Value
Outstanding at June 30, 2014	$ 240,554
Exercisable at June 30, 2014	$ 178,818