SHARE-BASED COMPENSATION - Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Stock Options [Member]	Dec. 31, 2012 Stock Options [Member]	Dec. 31, 2011 Stock Options [Member]	Dec. 31, 2013 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Dec. 31, 2011 Restricted Stock [Member]	Dec. 31, 2013 Minimum [Member] Stock Options [Member]	Dec. 31, 2013 Minimum [Member] Time-based Shares [Member]	Dec. 31, 2013 Maximum [Member] Stock Options [Member]	Dec. 31, 2013 Maximum [Member] Time-based Shares [Member]	Dec. 31, 2013 Omnibus Incentive Plan 2009 [Member]	Dec. 17, 2009 Omnibus Incentive Plan 2009 [Member]	Dec. 17, 2009 Omnibus Incentive Plan 2009 [Member] Stock Options [Member]	Dec. 17, 2009 Omnibus Incentive Plan 2009 [Member] Share Awards Other than Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for grant															2,885,907	1,076,555
Number of shares authorized per participant annually																627,990	627,990
Annual authorized cash award per participant, maximum															$ 5,000,000
Number of shares available for grant														1,249,317
Vesting period										3 years	3 years	5 years	5 years
Options granted, grant date fair value per share	$ 28.27	$ 17.66	$ 11.37
Unrecognized compensation cost related to stock options				4,200,000
Weighted average period for recognition of compensation consts				2 years 2 months 12 days			2 years 2 months 24 days
Aggregate fair value of shares vested							6,500,000	2,200,000	0
Total compensation expense recognized				2,200,000	1,300,000	400,000	8,300,000	3,300,000	200,000
Tax benefit recognized from compensation expense				800,000	300,000	0	3,200,000	1,300,000	100,000
Unrecognized compensation cost with respect to restricted stock							$ 9,000,000