Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Additional Information (Detail)

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STOCK-BASED COMPENSATION - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Management Incentive Award [Member]
Feb. 06, 2012
Management Incentive Award [Member]
Mar. 31, 2012
Long-Term Incentive Performance Award [Member]
Tranches
Mar. 01, 2012
Long-Term Incentive Performance Award [Member]
Mar. 31, 2012
Nonqualified Stock Options [Member]
Mar. 31, 2012
Employee Stock Options [Member]
Stockholders Equity Note [Line Items]                
Percentage of the award vesting at each anniversary date of the grant     20.00%       20.00%  
Closing New York Stock Exchange price       $ 76.92   $ 76.89    
Percentage of target restricted performance units award that will be divided into three substantially equal tranches in the three-year award cycle from 2011 to 2013         90.00%      
Number of tranches included in award cycle         3      
Number of award tranches for each calendar year         1      
Remaining target award based upon our achievement of adjusted earnings per share for the year ending 2013 compared to a target established at the beginning of the award cycle         10.00%      
Percentage of achievement used to determine RPUs earned of the target RPUs for each tranche         100.00%      
Stock options granted             0.2  
Grant price of stock options and RPU             $ 76.94 $ 14.88
Compensation expense for share-based awards recognized in net income, pre-tax $ 162 $ 120            
Award vesting period     5 years   3 years   5 years  
Period from grant date to expiration             10 years