Quarterly report pursuant to Section 13 or 15(d)

SHAREOWNERS' EQUITY - Additional Information (Detail)

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SHAREOWNERS' EQUITY - Additional Information (Detail) (USD $)
 0 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 3 Months Ended
Feb. 14, 2013
Mar. 31, 2013
Mar. 31, 2013
Classes_of_Common_Stock
Mar. 31, 2012
Mar. 31, 2013
Settled Options
Mar. 31, 2012
Settled Options
Mar. 31, 2013
Class A common stock
Vote
Mar. 31, 2012
Class A common stock
Dec. 31, 2012
Class A common stock
Mar. 31, 2013
Class B common stock
Vote
Mar. 31, 2012
Class B common stock
Dec. 31, 2012
Class B common stock
Mar. 31, 2013
Additional Paid-in Capital
Mar. 31, 2012
Additional Paid-in Capital
Jan. 31, 2013
Corporate Joint Venture [Member]
Business Acquisition [Member]
Mar. 31, 2013
Accelerated Share Repurchase Program September 2011 [Member]
Stockholders Equity Note [Line Items]                                
Business Combination, Step Acquisition, Purchase of Remaining Noncontrolling Interest                             $ 70,000,000  
Classes of Common Stock, Number     2                          
Votes per common share             10     1            
Common stock, par value             $ 0.01     $ 0.01            
Common stock, shares authorized             4,600,000,000     5,600,000,000            
Preferred stock, shares authorized   200,000,000 200,000,000                          
Preferred stock, par value   $ 0.01 $ 0.01                          
Preferred stock, issued   0 0                          
Total of Class A and Class B common stock, repurchased, value   1,013,000,000   542,000,000     1,000,000   0 0   0 186,000,000 428,000,000    
Common stock authorized for purchase, amount 10.0                             500,000,000
Option premiums received (paid)         0 (155,000,000)             (100,000,000) 155,000,000    
Option Indexed to Issuer's Equity, Shares         1.4                      
Common stock authorized for purchase, shares                               6,000,000
Common stock purchases   12,200,000   7,100,000     2,000,000 2,000,000   10,000,000 5,000,000          
Noncontrolling Interest, Ownership Percentage by Parent                             100.00%  
Options Premiums Received         $ 0