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Notes Payable and Long-Term Debt (Details) (USD $)
9 Months Ended 0 Months Ended 3 Months Ended 9 Months Ended
Nov. 02, 2013
Oct. 27, 2012
Mar. 13, 2013
Secured
May 04, 2013
Secured
May 04, 2013
Unsecured
Nov. 02, 2013
Commercial paper
Oct. 27, 2012
Commercial paper
Nov. 02, 2013
Commercial paper
Oct. 27, 2012
Commercial paper
Debt Instrument Line Items                  
Maximum daily amount outstanding during the period           $ 1,173,000,000 $ 0 $ 1,465,000,000 $ 620,000,000
Average daily amount outstanding during the period           528,000,000 0 439,000,000 134,000,000
Amount outstanding at period-end           1,077,000,000 0 1,077,000,000 0
Weighted average interest rate           0.13%   0.14% 0.16%
Debt amount repaid     1,500,000,000 1,500,000,000          
Cash proceeds from the sale to repurchase additional debt         1,400,000,000        
Repurchase of additional debt         970,000,000        
Loss on early retirement $ 445,000,000 $ 0     $ 445,000,000