Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Additional Information (Details)

v3.20.2
Benefit Plans - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Business Acquisition [Line Items]          
Share-based payment expense $ 52 $ 57 $ 107 $ 127  
Share-based payment expense     $ 107 127  
Employees and Non Employee Stock Option          
Business Acquisition [Line Items]          
Grant date fair value of options (in dollars per share)     $ 1.42    
Options exercised in period, intrinsic value     $ 39 22  
Exercise of stock options and vesting of restricted stock units (in shares)     4    
Share-based payment expense 12 15 $ 23 35  
Restricted Stock Units (RSUs) and Performance Shares          
Business Acquisition [Line Items]          
Share-based payment expense 40 $ 42 84 92  
Restricted stock units vested, intrinsic value     $ 77 102  
Granted (in shares)     7    
Restricted Stock Units (RSUs)          
Business Acquisition [Line Items]          
Exercise of stock options and vesting of restricted stock units (in shares)     7    
Performance-based Share Awards          
Business Acquisition [Line Items]          
Granted (in shares)     3    
Restricted Stock Units Rsu And Stock Options          
Business Acquisition [Line Items]          
Unrecognized compensation costs $ 342   $ 342   $ 415
Weighted-average service period (in years)     2 years 2 months 12 days    
Acquisition-related Costs          
Business Acquisition [Line Items]          
Share-based payment expense       $ 21  
Maximum | Restricted Stock Units (RSUs) and Performance Shares          
Business Acquisition [Line Items]          
Restricted stock units granted (in shares)     1