STOCK BASED COMPENSATION - Options Outstanding and Exercisable by Price Range (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	5,377,857	5,540,482
Options Outstanding, Outstanding Average Remaining Life	6 years 1 month 6 days	6 years 7 months 6 days	6 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 80.88	$ 70.29
Options Exercisable, Shares	2,719,760
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 65.54
$22.90 - $46.83
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	663,353
Options Outstanding, Outstanding Average Remaining Life	3 years 11 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 41.99
Options Exercisable, Shares	659,353
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 42.06
Range of Exercise Price, Lower Range Limit	$ 22.90
Range of Exercise Price, Upper Range Limit	$ 46.83
$46.87 - $51.20
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	72,225
Options Outstanding, Outstanding Average Remaining Life	4 years 4 months 2 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 49.70
Options Exercisable, Shares	68,225
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 49.61
Range of Exercise Price, Lower Range Limit	$ 46.87
Range of Exercise Price, Upper Range Limit	$ 51.20
$51.55 - $51.55
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	539,334
Options Outstanding, Outstanding Average Remaining Life	5 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 51.55
Options Exercisable, Shares	380,195
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 51.55
Range of Exercise Price, Lower Range Limit	$ 51.55
Range of Exercise Price, Upper Range Limit	$ 51.55
$51.75 - $83.88
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	550,039
Options Outstanding, Outstanding Average Remaining Life	3 years 11 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 57.71
Options Exercisable, Shares	524,647
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 57.16
Range of Exercise Price, Lower Range Limit	$ 51.75
Range of Exercise Price, Upper Range Limit	$ 83.88
$83.95 - $84.91
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	48,731
Options Outstanding, Outstanding Average Remaining Life	7 years 4 months 2 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 84.01
Options Exercisable, Shares	43,081
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 83.96
Range of Exercise Price, Lower Range Limit	$ 83.95
Range of Exercise Price, Upper Range Limit	$ 84.91
$85.00 - $85.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	614,657
Options Outstanding, Outstanding Average Remaining Life	6 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 85.00
Options Exercisable, Shares	327,701
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 85.00
Range of Exercise Price, Lower Range Limit	$ 85.00
Range of Exercise Price, Upper Range Limit	$ 85.00
$85.02 - $86.02
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	11,450
Options Outstanding, Outstanding Average Remaining Life	7 years 2 months 5 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 85.44
Options Exercisable, Shares	3,300
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 85.32
Range of Exercise Price, Lower Range Limit	$ 85.02
Range of Exercise Price, Upper Range Limit	$ 86.02
$86.24 - $86.24
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	801,630
Options Outstanding, Outstanding Average Remaining Life	7 years 1 month 13 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 86.24
Options Exercisable, Shares	317,562
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 86.24
Range of Exercise Price, Lower Range Limit	$ 86.24
Range of Exercise Price, Upper Range Limit	$ 86.24
$86.83 - $95.03
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	179,092
Options Outstanding, Outstanding Average Remaining Life	6 years 9 months 29 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 90.13
Options Exercisable, Shares	124,033
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 89.22
Range of Exercise Price, Lower Range Limit	$ 86.83
Range of Exercise Price, Upper Range Limit	$ 95.03
$95.87 - $132.95
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	1,897,346
Options Outstanding, Outstanding Average Remaining Life	7 years 8 months 23 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 106.15
Options Exercisable, Shares	271,663
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 100.63
Range of Exercise Price, Lower Range Limit	$ 95.87
Range of Exercise Price, Upper Range Limit	$ 132.95
$22.90 - $132.95
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Shares	5,377,857
Options Outstanding, Outstanding Average Remaining Life	6 years 1 month 21 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 80.88
Options Exercisable, Shares	2,719,760
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 65.54
Range of Exercise Price, Lower Range Limit	$ 22.90
Range of Exercise Price, Upper Range Limit	$ 132.95