BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - GOODWILL, INTANGIBLE ASSETS, AND OTHER LONG_LIVED ASSETS (Details) - Maximum |
3 Months Ended |
|---|---|
Apr. 30, 2018 | |
| Goodwill Impairment Testing | |
| Impairment Test Number of Primary Approaches to Assess Fair Value | 3 |
| Finite-Lived Intangible Asset, Useful Life | 10 years |