Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Schedule of Outstanding Awards) (Details)

v3.20.2
Stock-Based Compensation (Schedule of Outstanding Awards) (Details)
$ / shares in Units, shares in Thousands, $ in Millions
9 Months Ended
Sep. 30, 2020
USD ($)
$ / shares
shares
Series A common stock  
Awards  
Outstanding at beginning of period (in shares) 604
Granted (in shares) 528
Exercised (in shares) (98)
Outstanding at end of period (in shares) 1,034
Exercisable at end of period (in shares) 328
WAEP  
Outstanding at beginning of period (in dollars per share) | $ / shares $ 48.67
Granted (in dollars per share) | $ / shares 67.49
Exercised (in dollars per share) | $ / shares 44.52
Outstanding at end of period (in dollars per share) | $ / shares 58.67
Exercisable at end of period (in dollars per share) | $ / shares $ 47.09
Weighted average remaining life  
Outstanding at end of period 5 years 1 month 6 days
Exercisable at end of period 3 years 6 months
Aggregate intrinsic value  
Outstanding at end of period | $ $ 24
Exercisable at end of period | $ $ 11
Series B common stock  
Awards  
Increase (decrease) in outstanding options 0