v3.26.1
SEGMENT INFORMATION - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
Interest income $ 12 $ 18 $ 26 $ 36
Total revenues 1,178 1,238 2,404 2,530
Depreciation and amortization of intangible assets 19 17 36 34
Stock based compensation 17 18 33 31
Interest expense, bank fees and other 14 15 27 29
Income taxes 21 14 55 44
Net income 53 37 142 122
Reportable Segment        
Segment Reporting [Line Items]        
Interest income 12 18 26 36
Total revenues 1,178 1,238 2,404 2,530
Workers' compensation costs 14 17 36 39
Health insurance costs 853 930 1,687 1,850
Sales & marketing 59 63 124 125
Client support costs 39 44 82 90
Corporate administration 51 40 91 78
System support & development 37 41 76 85
Depreciation and amortization of intangible assets 19 17 36 34
Stock based compensation 17 18 33 31
Other 1 2 15 3
Interest expense, bank fees and other 14 15 27 29
Income taxes 21 14 55 44
Net income 53 37 142 122
Professional service revenues        
Segment Reporting [Line Items]        
Service revenues 159 172 348 381
Professional service revenues | Reportable Segment        
Segment Reporting [Line Items]        
Service revenues 159 172 348 381
Insurance service revenues        
Segment Reporting [Line Items]        
Service revenues 1,007 1,048 2,030 2,113
Insurance service revenues | Reportable Segment        
Segment Reporting [Line Items]        
Service revenues $ 1,007 $ 1,048 $ 2,030 $ 2,113