Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statements of Comprehensive Income (Loss)
Net income (loss) attributable to MBIA Inc.	$ (491)	$ (195)	$ (445)
Available-for-sale securities with no credit losses:
Unrealized gains (losses) arising during the period	33	(362)	(26)
Reclassification adjustments for (gains) losses included in net income (loss)	67	(10)	(12)
Foreign currency translation:
Foreign currency translation gains (losses)	0	2	4
Instrument-specific credit risk of liabilities measured at fair value:
Unrealized gains (losses) arising during the period	(1)	(31)	(17)
Reclassification adjustments for (gains) losses included in net income (loss)	45	18	36
Total other comprehensive income (loss)	144	(383)	(15)
Comprehensive income (loss) attributable to MBIA Inc.	$ (347)	$ (578)	$ (460)