XML 96 R66.htm IDEA: XBRL DOCUMENT v3.24.0.1
Stock-based compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
 4 Months Ended 12 Months Ended
Feb. 14, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Amount by which the pool of available shares will be reduced for each stock option granted (in shares)   1    
The amount of common stock available under the plan for future grants and/or issuances (in shares)   12,000,000    
Total unrecognized compensation cost related to nonvested awards   $ 498    
Weighted average number of years over which compensation cost related to nonvested awards is expected to be recognized   1 year 7 months 6 days    
Period over which the grants of equity instruments vest   3 years    
Number of common shares issued for each performance unit earned (in shares)   1 1 1
RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
The number of shares by which the pool of available shares will be reduced for other types of awards granted (in shares)   1.9    
Number of shares added back for tax withholding on full value awards (in shares)   1.9    
Weighted average grant date fair value, granted (in usd per share)   $ 237.70 $ 234.47 $ 233.10
Total fair value of units that vested during the year   $ 309 $ 192 $ 166
Units outstanding (in shares)   3,900,000 2,800,000  
Weighted-average grant date fair value (in usd per share)   $ 246.43 $ 228.71  
Units granted (in shares)   1,000,000.0    
Units, forfeited (in shares)   300,000    
Weighted average grant date fair value, forfeited (in usd per share)   $ 234.35    
RSUs | Subsequent Event        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards accelerated and settled $ 42      
Stock options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period of stock options from date of grant   10 years    
Total intrinsic value of stock options exercised during the year   $ 33 $ 67 56
Actual tax benefits realized from tax deductions from option exercises   $ 7 $ 14 $ 12
Performance units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
The number of shares by which the pool of available shares will be reduced for other types of awards granted (in shares)   1.9    
Number of shares added back for tax withholding on full value awards (in shares)   1.9    
Weighted average grant date fair value, granted (in usd per share)   $ 252.49 $ 247.48 $ 254.68
Total fair value of units that vested during the year   $ 109 $ 150 $ 149
Total unrecognized compensation cost related to nonvested awards   $ 146    
Weighted average number of years over which compensation cost related to nonvested awards is expected to be recognized   1 year    
Units outstanding (in shares)   1,700,000 1,600,000  
Weighted-average grant date fair value (in usd per share)   $ 251.41 $ 250.27  
Units granted (in shares)   700,000    
Units, forfeited (in shares)   200,000    
Weighted average grant date fair value, forfeited (in usd per share)   $ 251.38