Consolidated Statements Of Comprehensive Income (Loss) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statements of Comprehensive Income (Loss)
Net income (loss) attributable to MBIA Inc.	$ (195)	$ (445)	$ (578)
Available-for-sale securities with no credit losses:
Unrealized gains (losses) arising during the period	(362)	(26)	83
Reclassification adjustments for (gains) losses included in net income (loss)	(10)	(12)	(19)
Foreign currency translation:
Foreign currency translation gains (losses)	2	4	(3)
Instrument-specific credit risk of liabilities measured at fair value:
Unrealized gains (losses) arising during the period	(31)	(17)	50
Reclassification adjustments for (gains) losses included in net income (loss)	18	36	6
Total other comprehensive income (loss)	(383)	(15)	117
Comprehensive income (loss) attributable to MBIA Inc.	$ (578)	$ (460)	$ (461)