SHARE-BASED COMPENSATION - Narrative (Details) (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Stock options
Stock option activity
Granted (in shares)	261,000	511,000
Weighted average exercise price (in dollars per share)	$ 117.83	$ 71.10
Weighted average grant date fair value of stock options (in dollars per share)	$ 62.15	$ 22.74
Time-based RSUs
Stock option activity
Granted (in shares)	91,000	84,000
Weighted average grant date fair value of stock options (in dollars per share)	$ 135.42	$ 70.96
Performance-based RSUs
Stock option activity
Granted (in shares)	410,000	195,000
Weighted average grant date fair value of stock options (in dollars per share)	$ 209.72	$ 101.95
RSUs
Stock option activity
Remaining unrecognized compensation expense related to non-vested awards	$ 189.9
Weighted average service period over which compensation cost is expected to be recognized	3 years 6 months 29 days
2014 Omnibus Incentive Plan
Stock option activity
Shares registered for future issuance	20,000,000
Shares available for grants	17,391,904
2014 Omnibus Incentive Plan | Maximum
Stock option activity
Shares authorized to grant	18,000,000