v3.25.2
Loss and Loss Adjustment Expense Reserves (Schedule Of Financial Guarantees And Related Claim Liability) (Detail)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
USD ($)
Issue
Policy
Dec. 31, 2024
USD ($)
Issue
Policy
Loss And Loss Adjustment Expense Reserves [Line Items]    
Number of policies | Policy 115 119
Number of issues | Issue [1] 84 86
Remaining weighted average contract period (in years) 5 years 4 months 24 days 6 years 2 months 12 days
Principal [2] $ 2,029 $ 2,226
Interest [2] 1,694 1,876
Total [2] 3,723 4,102
Gross claim liability [3] 872 906
Less: Gross potential recoveries [4] 441 467
Discount, net [5] 99 107
Net claim liability (recoverable) 332 332
Unearned premium revenue 11 13
Reinsurance recoverable on paid and unpaid losses [6] $ 16 $ 16
Caution List Low [Member]    
Loss And Loss Adjustment Expense Reserves [Line Items]    
Number of policies | Policy 27 29
Number of issues | Issue [1] 9 10
Remaining weighted average contract period (in years) 3 years 6 months 5 years 8 months 12 days
Principal [2] $ 572 $ 717
Interest [2] 1,168 1,307
Total [2] 1,740 2,024
Gross claim liability [3] 0 0
Less: Gross potential recoveries [4] 0 0
Discount, net [5] 0 0
Net claim liability (recoverable) 0 0
Unearned premium revenue $ 2 $ 4
Caution List Medium [Member]    
Loss And Loss Adjustment Expense Reserves [Line Items]    
Number of policies | Policy 0 0
Number of issues | Issue [1] 0 0
Principal [2] $ 0 $ 0
Interest [2] 0 0
Total [2] 0 0
Gross claim liability [3] 0 0
Less: Gross potential recoveries [4] 0 0
Discount, net [5] 0 0
Net claim liability (recoverable) 0 0
Unearned premium revenue $ 0 $ 0
Caution List High [Member]    
Loss And Loss Adjustment Expense Reserves [Line Items]    
Number of policies | Policy 0 0
Number of issues | Issue [1] 0 0
Principal [2] $ 0 $ 0
Interest [2] 0 0
Total [2] 0 0
Gross claim liability [3] 0 0
Less: Gross potential recoveries [4] 0 0
Discount, net [5] 0 0
Net claim liability (recoverable) 0 0
Unearned premium revenue $ 0 $ 0
Classified List [Member]    
Loss And Loss Adjustment Expense Reserves [Line Items]    
Number of policies | Policy 88 90
Number of issues | Issue [1] 75 76
Remaining weighted average contract period (in years) 6 years 1 month 6 days 6 years 4 months 24 days
Principal [2] $ 1,457 $ 1,509
Interest [2] 526 569
Total [2] 1,983 2,078
Gross claim liability [3] 872 906
Less: Gross potential recoveries [4] 441 467
Discount, net [5] 99 107
Net claim liability (recoverable) 332 332
Unearned premium revenue $ 9 $ 9
[1] An “issue” represents the aggregate of financial guarantee policies that share the same revenue source for purposes of making debt service payments on the insured debt.
[2] Represents contractual principal and interest payments due by the issuer of the obligations insured by MBIA.
[3] The gross claim liability with respect to Puerto Rico exposures are net of expected recoveries for policies in a net payable position.
[4] Gross potential recoveries with respect to certain Puerto Rico exposures are net of the claim liability for policies in a net recoverable position.
[5] Represents discount related to Gross Claim Liability and Gross Potential Recoveries.
[6] Included in "Other assets" on the Company's consolidated balance sheets.