Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)	12 Months Ended
	Jan. 31, 2012	Jan. 31, 2011	Jan. 31, 2010
Income Taxes [Abstract]
U.S. statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	0.40%	0.60%	0.50%
Net changes in deferred tax valuation allowances	(3.40%)	(1.20%)	(3.30%)
Tax on foreign earnings different than U.S. rate	(10.10%)	(8.30%)	(9.70%)
Nondeductible interest	1.50%	1.30%	3.00%
Reserves established for foreign income tax contingencies	0.10%	0.50%	0.10%
Reversal of previously accrued income tax reserves	(0.40%)	(0.20%)	(1.40%)
Effect of company-owned life insurance	0.00%	(0.50%)	(1.00%)
Disposal of subsidiaries	2.90%	0.00%	0.00%
Other, net	0.60%	0.70%	(0.30%)
Effective tax rate	26.60%	27.90%	22.90%