Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Additional Information (Detail)

v3.6.0.2
STOCK-BASED COMPENSATION - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Sep. 30, 2016
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Actual Award, Percentage     65.86%   109.84%  
Stock compensation expense       $ 591 $ 574 $ 536
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense       219 215 199
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options       $ 207 $ 252 $ 261
Share-based Compensation Arrangement by Share-based Payment Award, Target Award Minimum, Percentage       0.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Target Award Maximum, Percentage       200.00%    
Discounted Employee Stock Purchase Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock Issued During Period, Shares, Employee Stock Purchase Plans       900,000 900,000 900,000
Stock Issued Employee Stock Purchase Plan Average Price Per Share       $ 99.27 $ 95.41 $ 95.67
Incentive Compensation Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized       27,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant       17,000,000    
Incentive Compensation Plan [Member] | Restricted Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share Based Compensation Arrangement By Share Based Payment Award Decrease In Number Of Shares Available For Grant For Each Share Of Award Granted       1    
Management Incentive Award            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       5 years    
Percentage of the award vesting at each anniversary date of the grant       20.00%    
Long Term Incentive Performance Award | Restricted Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       3 years    
Weighted-average grant date fair value of Stock Units granted       $ 97.04 $ 100.63 $ 92.35
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value       $ 445 $ 564 $ 579
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized       $ 512    
Long Term Incentive Performance Award | Restricted Performance Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       3 years    
Weighted-average grant date fair value of Stock Units granted $ 105.50 $ 96.64   $ 105.50 $ 96.98  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value       $ 13 $ 5  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized       92    
Nonqualified Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Proceeds from Stock Options Exercised       $ 72 56 85
Vesting (exercisable) period of awards       5 years    
Recognition period for the compensation cost       3 years 2 months    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       3 years 3 months    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value       $ 24 $ 31 $ 47
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized       $ 1    
Percentage of the award vesting at each anniversary date of the grant       20.00%    
Discounted Employee Stock Purchase Modified Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share Based Compensation Arrangement By Share Based Payment Award Exercisable Price Percentage Of Closing Price Of Another Class Of Stock       95.00%    
Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       3 years    
Minimum | Management Incentive Award            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Paid in Restricted Units, Percent       50.00%    
Minimum | Long Term Incentive Performance Award | Restricted Performance Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Consolidated operating return       33.33%    
Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       5 years    
Maximum | Management Incentive Award            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Paid in Restricted Units, Percent       66.67%    
Maximum | Long Term Incentive Performance Award | Restricted Performance Units [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Consolidated operating return       66.67%    
Restricted Stock Units (RSUs) [Member] | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       1 year    
Restricted Stock Units (RSUs) [Member] | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting (exercisable) period of awards       4 years