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INCOME TAXES - Reconciliation of Statutory Federal Income Tax Rate to Effective Rate Reported in Financial Statements (Details) | 12 Months Ended
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Jan. 31, 2020 | Jan. 31, 2019 | Jan. 31, 2018 | Jan. 31, 2017
Income Tax Disclosure [Abstract] |  |  |  |
Provision for Federal income taxes at the statutory rate | 21.00% | 21.00% | 33.80% | 35.00%
State and local income taxes, net of Federal tax benefit | 1.90% | 2.40% | 0.50% |
Permanent differences resulting in Federal taxable income | 5.90% | 6.60% | 8.80% |
Tax reform |  |  | 7.50% |
Foreign tax rate differential | (3.80%) | 0.50% | 0.20% |
Share-based payments | (0.80%) | (0.60%) | (1.20%) |
Foreign tax credit | (3.50%) | (5.50%) | (7.70%) |
Valuation allowance | 0.90% | 0.20% | 1.50% |
Other, net | (0.60%) | 0.30% | 0.20% |
Actual provision for income taxes | 21.00% | 24.90% | 43.60% |

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