Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Outstanding Awards and Exercises (Details)

v3.21.2
Stock-Based Compensation - Outstanding Awards and Exercises (Details)
$ / shares in Units, $ in Millions
 6 Months Ended
Jun. 30, 2021
USD ($)
$ / shares
shares
Awards | Common Class A, Class B And Class C  
Compensation cost not yet recognized  
Shares reserved for future issuance upon exercise of stock options 4,200,000
Awards | Series A common stock  
Options  
Outstanding ending balance (in shares) 1,000
WAEP  
WAEP Outstanding ending balance (in dollars per share) | $ / shares $ 35.81
Options additional disclosures  
Weighted average remaining contractual life outstanding 1 year 6 months
Awards | Series B common stock  
Options  
Outstanding ending balance (in shares) 722,000
WAEP  
WAEP Outstanding ending balance (in dollars per share) | $ / shares $ 96.79
Options additional disclosures  
Weighted average remaining contractual life outstanding 1 year 7 months 6 days
Options  
Compensation cost not yet recognized  
Unrecognized compensation cost options | $ $ 58.9
Period over which unrecognized compensation cost will be recognized 2 years 1 month 6 days
Options | Series A common stock  
Options  
Options granted (in shares) 0
Options | Series B common stock  
Options  
Options granted (in shares) 0
Options | Series C common stock  
Options  
Outstanding beginning balance (in shares) 3,327,000
Options granted (in shares) 199,000
Exercised (in shares) (18,000)
Outstanding ending balance (in shares) 3,508,000
Number of awards exercisable (in shares) 2,037,000
WAEP  
WAEP Outstanding beginning balance (in dollars per share) | $ / shares $ 92.35
WAEP Options granted (in dollars per share) | $ / shares 152.25
WAEP options exercised (in dollars per share) | $ / shares 67.23
WAEP Outstanding ending balance (in dollars per share) | $ / shares 95.87
WAEP options exercisable (in dollars per share) | $ / shares $ 59.35
Options additional disclosures  
Weighted average remaining contractual life outstanding 4 years 7 months 6 days
Weighted average remaining contractual life exercisable 3 years 7 months 6 days
Aggregate intrinsic value outstanding | $ $ 273.0
Aggregate intrinsic value exercisable | $ $ 233.0