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Fair Value Disclosures (Other Non-Financial Assets) (Details) (USD $)
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Oct. 29, 2011
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Jan. 29, 2011
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Oct. 30, 2010
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|---|---|---|---|
| Fair Value Disclosures | |||
| Carrying value of long-term debt | $ 3,100,000,000 | $ 3,100,000,000 | $ 3,100,000,000 |
| Fair value of long-term debt | $ 3,000,000,000 | $ 3,100,000,000 | $ 3,100,000,000 |