Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Additional Information (Details)

v3.25.0.1
STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense $ 24 $ 220 $ 1,568
Stock-based payment arrangement, expense, tax benefit (18) 42 451
Restricted Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based payment arrangement, exercise of option, tax benefit $ 110 $ 201 $ 352
Granted (in dollars per share) $ 147.22 $ 185.66 $ 223.72
Vested in period, fair value $ 11 $ 1,100 $ 923
Nonvested award, cost not yet recognized, amount $ 3    
Nonvested award, cost not yet recognized, period for recognition 2 years    
Restricted Performance Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in dollars per share) $ 156.73 $ 198.78 $ 227.00
Vested in period, fair value $ 23 $ 111 $ 239
Nonvested award, cost not yet recognized, amount $ 104    
Nonvested award, cost not yet recognized, period for recognition 1 year 10 months    
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 $ 3    
Nonvested award, cost not yet recognized, period for recognition 3 years    
Expiration period 10 years    
Proceeds from stock options exercised $ 3 20 14
Options, exercises in period, intrinsic value $ 2 $ 15 $ 20
Nonqualified Stock Options | Granted between 2019 and 2022      
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 | Granted prior to 2019      
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 9,000,000    
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 | Granted between 2019 and 2022      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense     $ 505
Management Incentive Award | Granted between 2019 and 2022 | U.S. Domestic Package      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock compensation expense     $ 431
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    
Long Term Incentive Performance Award | Restricted Performance Units | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Consolidated adjusted earnings per share 50.00%    
Adjusted cumulative free cash flow (20.00%)    
Long Term Incentive Performance Award | Restricted Performance Units | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
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) 800,000 700,000 600,000
Shares issued, employee stock purchase plan, average price per share (in dollars per share) $ 130.14 $ 162.34 $ 180.80