Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - 2015 Long-Term Stock Incentive Plan (Details)

v3.21.1
Benefit Plans - 2015 Long-Term Stock Incentive Plan (Details) - 2015 Long-Term Stock Incentive Plan
shares in Millions
3 Months Ended
Mar. 31, 2021
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Restricted stock conversion to common stock 1
Common stock available for future grants (in shares) 126
Employees and Non Employee Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option expiration period 10 years
Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting percentage 25.00%
Restricted Stock Units (RSUs)  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting percentage 25.00%
Performance-based Share Awards | Share-based Payment Arrangement, Tranche One  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 2 years
Award vesting percentage 25.00%
Performance-based Share Awards | Share-based Payment Arrangement, Tranche Two  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 3 years
Award vesting percentage 25.00%
Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 3 years
Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 4 years