REVENUE RECOGNITION REVENUE RECOGNITION - CONTRACT BALANCES (Details) - USD ($) $ in Thousands |
Apr. 30, 2018 |
Feb. 01, 2018 |
Jan. 31, 2018 |
|---|---|---|---|
| Revenue from Contract with Customer [Abstract] | |||
| Accounts receivable, net | $ 303,108 | $ 350,006 | $ 296,324 |
| Contract assets | 87,963 | 69,217 | 0 |
| Long-term contract assets (included in Other Assets) | 753 | ||
| Contract liabilities | 332,139 | 335,624 | 196,107 |
| Long-term contract liabilities | $ 28,354 | $ 31,037 | $ 24,519 |