Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Common Stock Repurchase Program) (Details)

v2.4.0.8
Stockholders' Equity (Common Stock Repurchase Program) (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
1 Months Ended 3 Months Ended 12 Months Ended
Feb. 28, 2011
Jul. 30, 2011
May 06, 2011
Apr. 30, 2011
Jan. 28, 2012
Stockholders' Equity Note [Abstract]          
Stock Repurchase Program, Authorized Amount $ 900,000,000        
Stock Repurchased and Retired, Shares   3 24 21  
Stock Repurchased and Retired, Value   $ 113,000,000 $ 900,000,000 $ 787,000,000 $ 900,000,000
Share Repurchase Program, Average Share Price     $ 36.98