Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical)

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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Statement of Stockholders' Equity [Abstract]      
Actuarial loss on post employment and postretirement benefit plans, income tax effect $ 241 $ 4 $ 166
Unrealized gain (loss) on marketable securities, income tax effect (1) 3 3
Realized loss on marketable securities, income tax effect 4    
Net actuarial gain (loss) on post employment and postretirement benefit plans, net of income tax effect (35) (23) 3
Prior service credit on post employment and postretirement benefit plans, income tax effect $ 1 $ 1 $ 1
Common stock dividends $ 0.55 $ 0.20 $ 0.20