Annual report pursuant to Section 13 and 15(d)

SHAREOWNERS' EQUITY - Additional Information (Detail)

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SHAREOWNERS' EQUITY - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended
Jan. 31, 2008
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Stockholders Equity Note [Line Items]        
Common stock purchases   38,700,000 12,400,000 10,900,000
Preferred stock, shares authorized   200,000,000    
Preferred stock, par value   $ 0.01    
Preferred stock, issued   0    
Total of class A and class B common stock, repurchased, value   $ 2,669,000,000 $ 809,000,000 $ 569,000,000
Share repurchase authorized amount 10,000,000,000      
Share repurchase authorization remaining   2,525,000,000    
Call Option
        
Stockholders Equity Note [Line Items]        
Common stock purchases   3,300,000    
Option premiums paid   200,000,000    
Settled Options
        
Stockholders Equity Note [Line Items]        
Common stock purchases   800,000    
Common stock, par value   $ 65.11    
Options premiums received   $ 6,000,000    
Class A common stock
        
Stockholders Equity Note [Line Items]        
Votes per share   10    
Common stock purchases   7,000,000 6,000,000 10,000,000
Common stock, par value   $ 0.01    
Common stock, shares authorized   4,600,000,000    
Class B common stock
        
Stockholders Equity Note [Line Items]        
Votes per share   1    
Common stock purchases   31,000,000 6,000,000 1,000,000
Common stock, par value   $ 0.01    
Common stock, shares authorized   5,600,000,000