v3.26.1
Contracts Accounted for as Financial Guaranty Insurance - Gross Premium Receivable Net of Commissions on Assumed Business Roll Forward (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Gross Premium Receivable Net of Ceding Commissions [Roll Forward]    
Beginning of year $ 1,572 $ 1,551
Less: Specialty insurance premium receivable 2 1
FG insurance premiums receivable 1,570 1,550
New business and supplemental premiums, net of commissions 72 39
Gross premiums received, net of commissions (74) (58)
Adjustments:    
Changes in the expected term and debt service assumptions (4) (5)
Accretion of discount, net of commissions on assumed business 2 8
Foreign exchange gain (loss) on remeasurement (25) 33
FG insurance premiums receivable 1,541 1,567
Specialty insurance premium receivable 2 1
Ending balance $ 1,543 $ 1,568