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INCOME TAXES - Reconciliation of Statutory Federal Income Tax Rate to Effective Rate Reported in Financial Statements (Detail 2)	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Income Tax Disclosure [Abstract]
Provision for Federal income taxes at the statutory rate	33.80%	35.00%	35.00%
State and local income taxes, net of Federal tax benefit	0.50%	1.00%	2.40%
Permanent differences resulting in Federal taxable income	8.80%	9.60%	3.60%
Tax reform	7.50%	0.00%	0.00%
Foreign tax rate differential	0.20%	(1.70%)	(1.40%)
ASC 718 adoption	(1.20%)	(3.80%)	0.00%
Foreign tax credit	(7.70%)	(6.50%)	(3.10%)
Valuation allowance	1.50%	0.00%	0.00%
Other, net	0.20%	(0.40%)	(0.30%)
Actual provision for income taxes	43.60%	33.20%	36.20%

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- Definition

Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to ASC 718 Adoption.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign tax credit.

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