v3.26.3
Consolidated Statements Of Operations - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Revenues:        
Scheduled premiums earned $ 6 $ 7 $ 18 $ 21
Refunding premiums earned 3 0 4 1
Net realized investment gains (losses)     0 (6)
Net gains (losses) on financial instruments at fair value and foreign exchange (8) (12) 5 (29)
Total revenues 26 [1] 15 [2] 77 [3] 52 [4]
Expenses:        
Losses and loss adjustment (12) (50) (6) (34)
Interest 46 50 141 148
Total expenses 49 22 184 177
Income (loss) from continuing operations before income taxes (23) (7) (107) (125)
Provision (benefit) for income taxes 0 0 0 0
Income (loss) from continuing operations (23) (7) (107) (125)
Income (loss) from discontinued operations, net of income taxes 0 (1) (1) (1)
Net income (loss) (23) (8) (108) (126)
Less: Net income (loss) attributable to noncontrolling interests 1 0 2 0
Net income (loss) attributable to MBIA Inc. $ (24) $ (8) $ (110) $ (126)
Net income (loss) per common share attributable to MBIA Inc. - basic and diluted        
Continuing operations - basic $ (0.49) $ (0.15) $ (2.19) $ (2.54)
Continuing operations - diluted (0.49) (0.15) (2.19) (2.54)
Discontinued operations - basic 0 (0.02) (0.01) (0.03)
Discontinued operations - diluted 0 (0.02) (0.01) (0.03)
Net income (loss) per common share attributable to MBIA Inc. - basic (0.49) (0.17) (2.2) (2.57)
Net income (loss) per common share attributable to MBIA Inc. - diluted $ (0.49) $ (0.17) $ (2.2) $ (2.57)
Weighted average number of common shares outstanding:        
Basic [5] 50,262,358 49,597,200 50,087,036 49,169,475
Diluted [5] 50,262,358 49,597,200 50,087,036 49,169,475
Non Variable Interest Entity [Member]        
Revenues:        
Premiums earned (net of ceded premiums of $-, $-, $-, and $-) $ 9 $ 7 $ 22 $ 22
Net investment income 17 17 52 54
Net realized investment gains (losses) 0 0 0 (6)
Net gains (losses) on financial instruments at fair value and foreign exchange (8) (12) (5) (29)
Fees and reimbursements 0 1 1 2
Other net realized gains (losses) 1 0 0 0
Expenses:        
Losses and loss adjustment (12) (50) (6) (34)
Amortization of deferred acquisition costs 1 1 3 3
Operating 13 19 48 53
Interest 46 50 141 148
Variable Interest Entity, Primary Beneficiary [Member]        
Revenues:        
Net gains (losses) on financial instruments at fair value and foreign exchange 1 2 1 2
Other net realized gains (losses) 6 0 6 7
Expenses:        
Operating 1 2 (3) 6
Interest $ 0 $ 0 $ 1 $ 1
[1] Includes net investment income of $15 million, $6 million, $2 million, and ($6) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[2] Includes net investment income of $14 million, $6 million, $2 million, and ($5) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[3] Includes net investment income of $45 million, $17 million, $8 million, and ($18) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[4] Includes net investment income of $44 million, $19 million, $8 million, and ($17) million for the U.S. Public Finance, Corporate, International and Structured Finance, and Eliminations segments, respectively.
[5] Includes approximately 1 million of participating securities that met the service condition and were eligible to receive nonforfeitable dividends or dividend equivalents for the three and nine months ended September 30, 2026 and 2025.