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Fair Value Measurements and Concentrations of Credit Risk (Estimated Fair Value Of Company Long Term Debt) (Details) (USD $) In Millions, unless otherwise specified	Feb. 02, 2013	Jan. 28, 2012
Notional Amount
Long-term debt	$ 6,583	$ 6,404
Carrying Amount
Long-term debt	6,774	6,620
Fair Value
Long-term debt	$ 7,351	$ 7,343

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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