BENEFIT PLANS (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Compensation and Retirement Disclosure [Abstract] | |||
| Employee contribution limit per calendar year (as a percent of pre-tax earnings) | 50.00% | ||
| Employer contribution limit per calendar year (as a percent of compensation) | 3.00% | ||
| Employer contribution per dollar employee contributes up to contribution limit | 50.00% | ||
| United States | |||
| Defined Contribution Plan Disclosure | |||
| Defined contribution plan contributions | $ 10.0 | $ 9.1 | $ 7.5 |
| All Other Countries | |||
| Defined Contribution Plan Disclosure | |||
| Defined contribution plan contributions | $ 2.1 | $ 2.5 | $ 2.5 |