v3.26.1
Revenue - Schedule of Components of Interest and Other Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Disaggregation of Revenue [Line Items]        
Book-of-business settlements $ 4 $ 3 $ 12 $ 5
Interest income 33 40 73 79
Other income 1 3 2 5
Total interest and other income 38 46 87 89
HWC [Member]        
Disaggregation of Revenue [Line Items]        
Book-of-business settlements 1 0 2 2
Interest income 7 7 15 14
Other income 0 1 0 1
Total interest and other income 8 8 17 17
R&B [Member]        
Disaggregation of Revenue [Line Items]        
Book-of-business settlements 3 3 10 3
Interest income 24 23 49 45
Other income 0 2 1 4
Total interest and other income 27 28 60 52
Corporate Segment [Member]        
Disaggregation of Revenue [Line Items]        
Book-of-business settlements 0 0 0 0
Interest income 2 10 9 20
Other income 1 0 1 0
Total interest and other income [1] $ 3 $ 10 $ 10 $ 20
[1] Reimbursable expenses and other, as well as Corporate revenue, are excluded from segment revenue, but included in total revenue on the condensed consolidated statements of comprehensive income. Amounts included in Corporate revenue may include eliminations, adjustments to reserves and impacts from hedged revenue transactions.