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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details)
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12 Months Ended | ||
|---|---|---|---|
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Jan. 31, 2012
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Jan. 31, 2011
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Jan. 31, 2010
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| 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% |