Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Additional Information (Detail)

v3.2.0.727
STOCK-BASED COMPENSATION - Additional Information (Detail)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
$ / shares
Jun. 30, 2014
USD ($)
$ / shares
Jun. 30, 2015
USD ($)
Tranches
$ / shares
shares
Jun. 30, 2014
USD ($)
$ / shares
shares
Mar. 30, 2015
$ / shares
Mar. 26, 2015
$ / shares
Feb. 05, 2015
$ / shares
Stockholders Equity Note [Line Items]              
Share-based Compensation Arrangement by Share-based Payment Award, Award Cycle Period              
Compensation expense for share-based awards recognized in net income, pre-tax | $ $ 134 $ 142 $ 328 $ 306      
Employee Stock Option [Member]              
Stockholders Equity Note [Line Items]              
Grant price of stock options and RPU $ 18.07 $ 20.48          
Nonqualified Stock Options [Member]              
Stockholders Equity Note [Line Items]              
Percentage of the award vesting at each anniversary date of the grant     20.00%        
Stock options granted | shares     0.2 0.1      
Grant price of stock options and RPU     $ 101.93 $ 96.98      
Award vesting period     5 years        
Period from grant date to expiration     10 years        
Long-Term Incentive Performance Award [Member]              
Stockholders Equity Note [Line Items]              
Closing New York Stock Exchange price           $ 96.64  
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 | Tranches     3        
Number of award tranches for each calendar year | Tranches     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     65.86%        
Award vesting period     3 years        
Management Incentive Award [Member]              
Stockholders Equity Note [Line Items]              
Percentage of the award vesting at each anniversary date of the grant     20.00%        
Closing New York Stock Exchange price         $ 97.27   $ 101.46
Award vesting period     5 years        
Minimum [Member] | Long-Term Incentive Performance Award [Member]              
Stockholders Equity Note [Line Items]              
Percentage of achievement used to determine RPUs earned of the target RPUs for each tranche     0.00%        
Maximum [Member] | Long-Term Incentive Performance Award [Member]              
Stockholders Equity Note [Line Items]              
Percentage of achievement used to determine RPUs earned of the target RPUs for each tranche     200.00%