Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Stock Options Activity Under Share-Based Payment Plans (Details)

v3.20.1
Benefit Plans - Stock Options Activity Under Share-Based Payment Plans (Details) - Employees and Non Employee Stock Option
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2020
USD ($)
$ / shares
shares
Options  
Outstanding as of beginning of period (in shares) | shares 208
Granted (in shares) | shares 7
Exercised (in shares) | shares (11)
Forfeited, cancelled or expired (in shares) | shares (1)
Outstanding as of end of period (in shares) | shares 203
Exercisable (in shares) | shares 144
Weighted- Average Exercise Price Per Share  
Outstanding as of beginning of period (in dollars per share) | $ / shares $ 4.46
Granted (in dollars per share) | $ / shares 7.20
Exercised (in dollars per share) | $ / shares 4.17
Forfeited, cancelled or expired (in dollars per share) | $ / shares 5.93
Outstanding as of end of period (in dollars per share) | $ / shares 4.56
Exercisable (in dollars per share) | $ / shares $ 4.03
Weighted- Average Remaining Contractual Term (Years)  
Outstanding 5 years 6 months 3 days
Exercisable 4 years 8 months 1 day
Aggregate Intrinsic Value  
Outstanding | $ $ 165
Exercisable | $ $ 153