v3.26.3
Business, Basis of Presentation, and Summary of Significant Accounting Policies (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2026
employee
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2026
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Feb. 28, 2026
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]              
Prepaid expense   $ 29.3   $ 29.3     $ 22.6
Commissions payable   10.2   10.2     26.3
Stock repurchase program, authorized amount   2,600.0   2,600.0   $ 1,000.0  
Stock repurchase program, remaining authorized repurchase amount   $ 1,104.4   $ 1,104.4      
Stock repurchased and retired shares (in shares) | shares   2,549,649 8,283,044 21,902,952 32,757,891    
Treasury stock acquired, average cost per share (in dollars per share) | $ / shares   $ 2.94 $ 10.46 $ 5.76 $ 10.01    
Stock repurchased and retired value   $ 7.5 $ 86.6 $ 126.2 $ 328.0    
Excise tax     $ 0.7 0.9 $ 2.8    
Reduction of employees | employee 600            
Percentage of reduction of employees 20.00%            
Restructuring charges   7.6   29.2      
Cash payments       15.8      
Remaining liability   13.4   13.4      
Expected restructuring charges   33.0   33.0      
Balance Sheet Location [Axis]: us-gaap:AccruedLiabilitiesCurrent              
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]              
Commissions payable, current   10.1   10.1     25.7
Balance Sheet Location [Axis]: us-gaap:OtherLiabilitiesNoncurrent              
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]              
Commissions payable, non-current   $ 0.1   $ 0.1     $ 0.6