Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements and Concentrations of Credit Risk (Financial Assets Measured At Fair Value On A Recurring Basis) (Details)

v2.4.0.6
Fair Value Measurements and Concentrations of Credit Risk (Financial Assets Measured At Fair Value On A Recurring Basis) (Details) (USD $)
In Millions, unless otherwise specified
Feb. 02, 2013
Jan. 28, 2012
Marketable equity and debt securities $ 68 $ 81
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
   
Marketable equity and debt securities 0 0
Significant Observable Inputs (Level 2) [Member]
   
Marketable equity and debt securities 68 81
Significant Unobservable Inputs (Level 3) [Member]
   
Marketable equity and debt securities $ 0 $ 0