Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Stockholders' Equity (Narrative) (Details)

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Stockholders' Equity Stockholders' Equity (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
0 Months Ended 3 Months Ended 9 Months Ended 0 Months Ended
Oct. 01, 2013
Nov. 02, 2013
Oct. 27, 2012
Nov. 02, 2013
Oct. 27, 2012
Aug. 22, 2013
Feb. 02, 2013
Oct. 01, 2013
Common Stock [Member]
Aug. 22, 2013
Common Stock [Member]
Aug. 22, 2013
Preferred Stock [Member]
right
Schedule of Capitalization, Equity [Line Items]                    
Common stock sold during the period 84,000,000                  
Common stock, par value per share $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50 $ 0.50    
Sale of common stock (in dollars per share)               $ 9.65    
Proceeds from sale of common stock   $ 786 $ 0 $ 786 $ 0     $ 786    
Stock issuance costs incurred               $ 24    
Number of stock purchase rights                   1
Portion of share authorized to purchase, per right                   0.001
Exercise price of stock purchase rights (in dollars per share)                   55.00
Stock purchase right, exercisable upon reaching individual common stock ownership percentage                 10.00%  
Stock purchase right, substantial dilution affecting stockholder ownership (percent)                 10.00%