v3.24.3
Revenue - Schedule of Components of Interest and Other Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Disaggregation of Revenue [Line Items]        
Book-of-business settlements $ 7 $ 1 $ 11 $ 11
Interest income 43 39 130 106
Other income 1 2 2 7
Total interest and other income 51 42 143 124
HWC [Member]        
Disaggregation of Revenue [Line Items]        
Book-of-business settlements 3 0 3 0
Interest income 8 7 26 18
Other income 0 0 0 4
Total interest and other income 11 7 29 22
R&B [Member]        
Disaggregation of Revenue [Line Items]        
Book-of-business settlements 4 1 8 11
Interest income 29 25 86 52
Other income 1 1 2 0
Total interest and other income 34 27 96 63
Corporate Segment [Member]        
Disaggregation of Revenue [Line Items]        
Book-of-business settlements 0 0 0 0
Interest income 6 7 18 36
Other income 0 1 0 3
Total interest and other income $ 6 [1] $ 8 [1] $ 18 $ 39
[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.