Quarterly report pursuant to Section 13 or 15(d)

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

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Benefit Plans - 2015 Long-Term Stock Incentive Plan (Narrative) (Details) - 2015 Long-Term Stock Incentive Plan
shares in Millions
9 Months Ended
Sep. 30, 2023
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) 100
Employees and Non Employee Stock Option  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock option expiration period 10 years
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