Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Additional Information (Details)

v3.24.0.1
STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 220 $ 1,568 $ 878
Stock-based payment arrangement, expense, tax benefit $ 42 $ 451 $ 301
Restricted Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in dollars per share) $ 185.66 $ 223.72 $ 165.27
Vested in period, fair value $ 1,100 $ 900 $ 700
Nonvested award, cost not yet recognized, amount $ 7    
Nonvested award, cost not yet recognized, period for recognition 2 years    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based payment arrangement, exercise of option, tax benefit $ 201 $ 352 $ 278
Restricted Performance Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in dollars per share) $ 198.78 $ 227.00 $ 168.10
Vested in period, fair value $ 111 $ 239 $ 160
Nonvested award, cost not yet recognized, amount $ 150    
Nonqualified Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting (exercisable) period of awards 5 years    
Nonvested award, cost not yet recognized, amount $ 4    
Nonvested award, cost not yet recognized, period for recognition 3 years    
Expiration period 10 years    
Proceeds from stock options exercised $ 20 14 16
Options, exercises in period, intrinsic value $ 15 $ 20 $ 16
Nonqualified Stock Options | Tranche One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of the award vesting at each anniversary date of the grant 20.00%    
Nonqualified Stock Options | Tranche Five      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of the award vesting at each anniversary date of the grant 20.00%    
Nonqualified Stock Options | Tranche Three      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of the award vesting at each anniversary date of the grant 20.00%    
Nonqualified Stock Options | Tranche Two      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of the award vesting at each anniversary date of the grant 20.00%    
Nonqualified Stock Options | Tranche Four      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Percentage of the award vesting at each anniversary date of the grant 20.00%    
Incentive Compensation Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) 25,000,000    
Number of shares available for grant 10,000,000    
Incentive Compensation Plan | Restricted Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Decrease in number of shares available for grant for each share of award granted 1    
Management Incentive Award | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation paid in restricted units 50.00%    
Management Incentive Award | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based compensation paid in restricted units 66.67%    
Management Incentive Award | Tranche One      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 505    
Vesting (exercisable) period of awards 1 year    
Percentage of the award vesting at each anniversary date of the grant 20.00%    
Management Incentive Award | Tranche One | U.S. Domestic Package      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 431    
Management Incentive Award | Tranche Five      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting (exercisable) period of awards 5 years    
Long Term Incentive Performance Award | Restricted Performance Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting (exercisable) period of awards 3 years    
Nonvested award, cost not yet recognized, period for recognition 1 year 9 months    
Long Term Incentive Performance Award | Restricted Performance Units | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award modifier related to total shareowner return relative to S&P 500 Index (20.00%)    
Long Term Incentive Performance Award | Restricted Performance Units | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Consolidated adjusted earnings per share 50.00%    
Adjusted cumulative free cash flow 50.00%    
Award modifier related to total shareowner return relative to S&P 500 Index 20.00%    
Discounted Employee Stock Purchase Modified Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercisable price percentage of closing price of another class of stock 95.00%    
Discounted Employee Stock Purchase Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares issued, employee stock purchase plans (in shares) 700,000 600,000 600,000
Shares issued, employee stock purchase plan, average price per share (in dollars per share) $ 162.34 $ 180.80 $ 172.07