EMPLOYEE STOCK AND SAVINGS PLANS (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
| Defined Contribution Plan Disclosure [Line Items] | |||
| Percent of first pay contributed the Company will match (as a percent) | 50.00% | ||
| First pay contributed that will be matched (as a percent) | 5.00% | ||
| Company matching contributions | $ 2.2 | $ 2.3 | $ 2.4 |
| Maximum election to defer annual salary (as a percent) | 50.00% | ||
| Maximum election to defer bonus before taxes (as a percent) | 80.00% | ||
| International | |||
| Defined Contribution Plan Disclosure [Line Items] | |||
| Company matching contributions | $ 13.1 | $ 15.1 | $ 13.6 |