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Notes Payable and Long-Term Debt (Details 3) (USD $)
1 Months Ended 1 Months Ended 12 Months Ended
Oct. 29, 2011
Feb. 02, 2013
Jun. 30, 2012
Fixed rate debt
Feb. 01, 2014
Commercial paper
Feb. 02, 2013
Commercial paper
Jan. 28, 2012
Commercial paper
Notes Payable and Long-Term Debt            
Maximum daily amount outstanding during the year       $ 1,465,000,000 $ 970,000,000 $ 1,211,000,000
Average amount outstanding during the year       408,000,000 120,000,000 244,000,000
Amount outstanding at year-end   970,000,000   80,000,000   0
Weighted average interest rate (as a percent)       0.13% 0.16% 0.11%
Period of unsecured revolving credit facility 5 years          
Revolving credit facility 2,250,000,000          
Debt, amount issued     $ 1,500,000,000      
Debt, fixed interest rate (as a percent)     4.00%