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Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Millions | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings (Deficit) [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Total Shareholders' Equity Of MBIA Inc. [Member] | Preferred Stock [Member] | Preferred Stock And Non Controlling Interest Held For Sale [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance (in common stock shares) |  | 283,186,115 |  |  |  |  |  |  |
Balance (in preferred stock shares) |  |  |  |  |  |  |  | 1,315 |
Total equity balance at Dec. 31, 2022 |  | $ 283 | $ 2,925 | $ (653) | $ (283) | $ (3,154) | $ (882) |  | $ 6
Balance (in treasury stock shares) at Dec. 31, 2022 |  |  |  |  |  | (228,333,444) |  |  |
Share-based compensation |  |  | (10) |  |  | $ 11 |  |  |
Net income (loss) attributable to MBIA Inc. | $ (93) |  |  | (93) |  |  |  |  |
Other comprehensive income (loss) | 62 |  |  |  | 62 |  |  |  |
Share-based compensation (in treasury stock shares) |  |  |  |  |  | 111,803 |  |  |
Period change |  |  |  |  |  |  | (30) |  | 7
Total equity balance at Mar. 31, 2023 | $ (899) | $ 283 | 2,915 | (746) | (221) | $ (3,143) | (912) |  | 13
Balance (in treasury stock shares) at Mar. 31, 2023 |  |  |  |  |  | (228,221,641) |  |  |
Balance (in common stock shares) |  | 283,186,115 |  |  |  |  |  |  |
Balance (in preferred stock shares) |  |  |  |  |  |  |  | 1,315 |
Balance (in common stock shares) | 283,186,115 | 283,186,115 |  |  |  |  |  |  |
Balance (in preferred stock shares) | 0 |  |  |  |  |  |  | 1,315 |
Total equity balance at Dec. 31, 2023 | $ (1,647) | $ 283 | 2,515 | (1,144) | (139) | $ (3,172) | (1,657) |  | 10
Balance (in treasury stock shares) at Dec. 31, 2023 | (232,323,184) |  |  |  |  | (232,323,184) |  |  |
Share-based compensation |  |  | (29) |  |  | $ 31 |  |  |
Net income (loss) attributable to MBIA Inc. | $ (86) |  |  | (86) |  |  |  |  |
Other comprehensive income (loss) | 8 |  |  |  | 8 |  |  |  |
Share-based compensation (in treasury stock shares) |  |  |  |  |  | 412,821 |  |  |
Period change |  |  |  |  |  |  | (76) |  | 0
Total equity balance at Mar. 31, 2024 | $ (1,723) | $ 283 | $ 2,486 | $ (1,230) | $ (131) | $ (3,141) | $ (1,733) |  | $ 10
Balance (in treasury stock shares) at Mar. 31, 2024 | (231,910,363) |  |  |  |  | (231,910,363) |  |  |
Balance (in common stock shares) | 283,186,115 | 283,186,115 |  |  |  |  |  |  |
Balance (in preferred stock shares) | 0 |  |  |  |  |  |  | 1,315 |

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