EQUITY-BASED COMPENSATION - Schedule or Description of Forfeiture Rate and Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2016 |
Jun. 30, 2016 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||
| Equity-based compensation | $ 26,163 | $ 31,404 | $ 74,203 | $ 73,786 | ||||
| Restricted Stock Units (RSUs) | ||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||||||||
| Actual Forfeiture rate | 2.70% | 0.90% | 6.60% | 1.30% | ||||
| Equity-based compensation | $ 16,724 | $ 16,330 | $ 52,564 | $ 49,860 | ||||