Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Additional Information (Details)

v3.21.1
Benefit Plans - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based payment expense $ 51 $ 55  
Share-based payment expense $ 51 55  
Employees and Non Employee Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grant date fair value of options ( in USD per share) $ 1.78    
Options exercised in period, intrinsic value $ 85 32  
Exercise of stock options and vesting of restricted stock units (in shares) 13,000,000    
Share-based payment expense $ 11 11  
Restricted Stock Units (RSUs) and Performance Shares      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based payment expense 40 44  
Restricted stock units vested, intrinsic value $ 39 $ 58  
Granted (in shares) 10,000,000    
Restricted Stock Units (RSUs) and Performance Shares | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock units granted (in shares) 1,000,000    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Exercise of stock options and vesting of restricted stock units (in shares) 4,000,000    
Performance-based Share Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted (in shares) 6,000,000    
Restricted Stock Units Rsu And Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation costs $ 467   $ 385
Weighted-average service period (in years) 2 years 3 months 18 days