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Postretirement Health Care and Life Insurance Benefits (Weighted Average Assumptions Used To Determine Net Periodic Costs For Postretirement Plans) (Details) (Postretirement Obligations)
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12 Months Ended | ||
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Jan. 28, 2012
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Jan. 29, 2011
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Jan. 30, 2010
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Postretirement Obligations
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| Discount rate | 5.40% | 5.65% | 7.45% |
| X | ||||||||||
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- Definition
The interest rate used to adjust for the time value of money. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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