XML 73 R62.htm IDEA: XBRL DOCUMENT v3.21.2
Stock Based Compensation - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2020
Dec. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted during period (shares)         0  
Exercise price of stock options granted during period (USD per share)         $ 0  
Stock-based compensation expense     $ 9.0 $ 9.7 $ 23.7 $ 38.6
Director and Executive Officer            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period (in years) 3 years          
Expiration period of stock options 7 years          
Stock-based compensation expense $ 39.9          
Director            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted during period (shares) 4,160,000          
Exercise price of stock options granted during period (USD per share) $ 22.00          
Executive            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options granted during period (shares) 3,840,000          
Vesting period (in years) 3 years          
ESPP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock-based compensation expense     $ 1.0   $ 4.0  
Minimum contributions per employee (as a percent)   3.00%        
Maximum contributions per employee (as a percent)   15.00%        
Holding period of ESPP employer contribution   1 year