Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Additional Information (Detail)

v3.8.0.1
STOCK-BASED COMPENSATION - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 584 $ 591 $ 574
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense 227 219 215
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options $ 276 $ 207 $ 252
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 $ 108.98 $ 99.27 $ 95.41
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 12,000,000    
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]      
Weighted-average grant date fair value of Stock Units granted $ 105.62 $ 97.04 $ 100.63
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 534 $ 445 $ 564
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 475    
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 $ 105.65 $ 105.50 $ 96.64
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 0 $ 13 $ 5
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized 100    
Nonqualified Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from Stock Options Exercised $ 41 72 56
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 $ 22 $ 24 $ 31
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 Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 month    
Minimum | Long Term Incentive Performance Award | Restricted Performance Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 9 months    
Consolidated operating return 33.33%    
Minimum | Nonqualified Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 6 months    
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 Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years    
Maximum | Long Term Incentive Performance Award | Restricted Performance Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year    
Consolidated operating return 66.67%    
Maximum | Nonqualified Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years    
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