Annual report pursuant to Section 13 and 15(d)

SHAREOWNERS' EQUITY - Additional Information (Detail)

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SHAREOWNERS' EQUITY - Additional Information (Detail) (USD $)
 0 Months Ended 12 Months Ended 0 Months Ended
May 03, 2012
Dec. 31, 2012
Classes_of_Common_Stock
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Settled Options
Dec. 31, 2011
Settled Options
Dec. 31, 2012
Class A Common Stock
Vote
Dec. 31, 2011
Class A Common Stock
Dec. 31, 2010
Class A Common Stock
Dec. 31, 2012
Class B Common Stock
Vote
Dec. 31, 2011
Class B Common Stock
Dec. 31, 2010
Class B Common Stock
Feb. 14, 2013
Authorization to Repurchase Shares
Stockholders Equity Note [Line Items]                          
Classes of common stock   2                      
Votes per common share             10     1      
Common stock, par value           $ 65.11 $ 0.01     $ 0.01      
Common stock, shares authorized             4,600,000,000     5,600,000,000      
Preferred stock, shares authorized   200,000,000                      
Preferred stock, par value   $ 0.01                      
Preferred stock, issued   0                      
Common stock purchases, Shares   21,800,000 38,700,000 12,400,000   800,000 9,000,000 7,000,000 6,000,000 13,000,000 31,000,000 6,000,000  
Total of class A and class B common stock, repurchased, value   $ 1,638,000,000 $ 2,669,000,000 $ 809,000,000     $ 0 $ 0 $ 0 $ 0 $ 0 $ 0  
Share repurchase authorized amount 5,000,000,000                       10,000,000,000
Share repurchase authorization remaining   3,970,000,000                      
Option premiums received (paid)         206,000,000                
Options premiums received           $ 6,000,000