v3.26.3
Treasury Stock and Share-Based Awards - Summary of Restricted Stock Award Activity (Parenthetical) (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Restricted Stock [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Compensation expense [1],[2] $ 12.4 $ 12.6
Employee Benefits and Share-Based Compensation 0.2  
Restricted Stock [Member] | Field Incentive Compensation Plan 2025 Member    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Compensation expense 0.6 0.9
Performance Shares    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Compensation expense [3] 13.3 $ 12.5
Employee Benefits and Share-Based Compensation $ 0.1  
[1] Compensation expense for the nine months ended September 30, 2026 and 2025 includes approximately $0.6 and $0.9, respectively, related to a portion of the short-term field incentive compensation plan for 2026 and 2025, respectively, to be settled in restricted stock.
[2] Compensation expense for the nine months ended September 30, 2026 includes approximately $0.2 related to the modification of certain outstanding restricted stock awards that permits eligible employees to continue vesting in outstanding awards following retirement, subject to certain conditions and obligations approved by Holdings’ Compensation Committee. The Company determined the revised requisite service period of the modified awards to be the shorter of the period until retirement eligibility or the original vesting period.
[3] Compensation expense for the three and nine months ended September 30, 2026 includes approximately $0.1 related to the modification of certain outstanding PSUs that permits eligible employees to continue vesting in outstanding awards following retirement, subject to certain conditions and obligations approved by Holdings’ Compensation Committee. The Company determined the revised requisite service period of the modified awards to be the shorter of the period until retirement eligibility or the original vesting period.