v3.26.1
Business, Basis of Presentation, and Summary of Significant Accounting Policies (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Feb. 28, 2026
Dec. 31, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]        
Prepaid expense $ 26.2     $ 22.6
Commissions payable 13.5     26.3
Stock repurchase program, authorized amount 2,600.0   $ 1,000.0  
Stock repurchase program, remaining authorized repurchase amount $ 1,140.1      
Stock repurchased and retired shares (in shares) 13,099,790 8,598,274    
Treasury stock acquired, average cost per share (in dollars per share) $ 6.91 $ 11.05    
Stock repurchased and retired value $ 90.5 $ 95.0    
Excise tax 0.7 $ 0.8    
Accrued Liabilities        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Commissions payable, current 13.1     25.7
Other Long-term Liabilities        
Revenues from External Customers and Long-Lived Assets [Line Items]        
Commissions payable, non-current $ 0.4     $ 0.6