Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Additional Information (Details)

v3.21.2
Benefit Plans - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payment expense $ 51 $ 58 $ 149 $ 165  
Share-based payment expense     $ 149 165  
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)     $ 1.77    
Options exercised in period, intrinsic value     $ 149 53  
Exercise of stock options and vesting of restricted stock units (in shares)     20,000,000    
Share-based payment expense 10 11 $ 32 34  
Restricted Stock Units (RSUs) and Performance Shares          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based payment expense 41 $ 47 117 131  
Restricted stock units vested, intrinsic value     $ 154 $ 168  
Granted (in shares)     39,000,000    
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)     15,000,000    
Performance-based Share Awards          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Granted (in shares)     7,000,000    
Restricted Stock Units Rsu And Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation costs $ 513   $ 513   $ 385
Weighted-average service period (in years)     2 years 7 months 6 days