EMPLOYEE BENEFIT PLANS (Details) (401 (k) Plan[Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Defined Contribution Plan Disclosure [Line Items]
Employee service period, Minimum	30 days
Annual contribution per employee (in hundredths)	4.00%
Employer contribution amount	$ 1.5	$ 1.4	$ 1.3
Foreign Subsidiaries [Member]
Defined Contribution Plan Disclosure [Line Items]
Employer contribution amount	$ 4.2	$ 3.8	$ 3.3
Minimum [Member] | Foreign Subsidiaries [Member]
Defined Contribution Plan Disclosure [Line Items]
Annual contribution per employee (in hundredths)	3.00%
Maximum [Member]
Defined Contribution Plan Disclosure [Line Items]
Employers matching contribution of first four percent (in hundredths)	75.00%
Maximum [Member] | Foreign Subsidiaries [Member]
Defined Contribution Plan Disclosure [Line Items]
Annual contribution per employee (in hundredths)	22.00%