Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Income Tax Disclosure [Abstract]
U.S. statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	1.10%	0.50%	0.80%
Net changes in deferred tax valuation allowances	0.00%	(4.50%)	(19.50%)
Tax on foreign earnings different than U.S. rate	(7.40%)	(11.80%)	(11.70%)
Nondeductible interest	1.60%	4.00%	6.40%
Reserve established for foreign income tax contingencies	0.00%	0.10%	0.30%
Effect of company-owned life insurance	0.20%	(0.40%)	(0.60%)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Percent	0.00%	2.40%	0.00%
Other, net	0.00%	1.50%	1.20%
Effective tax rate	30.50%	26.80%	11.90%