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Debt and Credit Agreements (Details) (USD $)
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3 Months Ended | |||||||||||||
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Oct. 27, 2012
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Jan. 28, 2012
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Nov. 04, 2010
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Oct. 27, 2012
Short Term Debt October 2012 Notes [Member]
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Jan. 28, 2012
Short Term Debt October 2012 Notes [Member]
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Sep. 30, 2002
Short Term Debt October 2012 Notes [Member]
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Oct. 27, 2012
Commercial paper program
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Oct. 27, 2012
Maximum [Member]
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Oct. 27, 2012
Lines of Credit
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Jan. 28, 2012
Lines of Credit
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Oct. 27, 2012
Long Term Debt January 2014 Notes, including Unamortized Gain [Member]
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Jan. 28, 2012
Long Term Debt January 2014 Notes, including Unamortized Gain [Member]
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Oct. 27, 2012
Capital lease obligations and other notes payable
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Jan. 28, 2012
Capital lease obligations and other notes payable
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| Debt and credit agreements | ||||||||||||||
| Maximum borrowing capacity | $ 1,000,000,000 | $ 302,900,000 | ||||||||||||
| Maximum borrowing capacity upon agreement of participating lenders | 1,500,000,000 | |||||||||||||
| Debt Instrument, Interest Rate, Stated Percentage | 7.375% | |||||||||||||
| Maximum Borrowing Capacity of Commercial Paper Program | 1,000,000,000 | |||||||||||||
| Commercial Paper Notes Maximum Maturity Period | P397D | |||||||||||||
| Short-term Debt | 0 | |||||||||||||
| Short-term Debt, Maximum Amount Outstanding During Period | 75,000,000 | |||||||||||||
| Outstanding debt | ||||||||||||||
| Short Term Debt Unhedged, Carrying Value | 0 | 332,617,000 | 325,000,000 | |||||||||||
| Long-term Debt Unhedged, Carrying Value | 1,515,428,000 | 1,525,003,000 | ||||||||||||
| Lines of Credit | 137,001,000 | 170,745,000 | ||||||||||||
| Long-term Debt and Capital Lease Obligations Current and Noncurrent | 1,660,832,000 | 2,038,180,000 | 8,403,000 | 9,815,000 | ||||||||||
| Less: Current portion | (119,046,000) | (439,143,000) | ||||||||||||
| Long-term debt | $ 1,541,786,000 | $ 1,599,037,000 |