Cover	12 Months Ended
Cover	Dec. 31, 2024
Document Information [Line Items]
Document Type	DEF 14A
Amendment Flag	false
Entity Information [Line Items]
Entity Registrant Name	MBIA Inc.
Entity Central Index Key	0000814585

Pay vs Performance Disclosure - USD ($)

12 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Dec. 31, 2022

Dec. 31, 2021

Dec. 31, 2020

Pay vs Performance Disclosure

Pay vs Performance Disclosure, Table

Pay Versus Performance Table and Supporting Narrative for 2024

The following section contains information regarding “compensation actually paid” to our Named Executive Officers (NEOs) and the relationship between those amounts and certain company performance metrics.

Pay Versus Performance Table


Year	Summary Compensation Table Total for PEO ($) (1)		Compensation Actually Paid to PEO ($) (1) (5)			Average Summary Compensation Table Total for Non-PEO Named Executive Officers ($) (2)		Average Compensation Actually Paid to Non-PEO Named Executive Officers ($) (2) (5)			Value of Initial Fixed $100 Investment Based On:				Net Income ($m)			Adjusted Book Value Per Share ($) (4)
Year	Summary Compensation Table Total for PEO ($) (1)		Compensation Actually Paid to PEO ($) (1) (5)								Total Shareholder Return ($)		Peer Group Total Shareholder Return ($) (3)		Net Income ($m)			Adjusted Book Value Per Share ($) (4)
2024		3,904,488		4,105,284			1,599,377		1,719,742			152.78		173.34		(447	)		13.79
2023		17,140,688		4,970,732			7,093,600		2,206,884			144.72		132.83		(491	)		17.66
2022		4,005,800		(3,035,560	)		1,595,180		(1,184,433	)		138.17		118.49		(195	)		28.73
2021		4,020,800		23,148,168			1,609,800		9,009,475			169.78		132.50		(445	)		31.77
2020		4,080,200		(769,780	)		1,730,136		(204,230	)		70.75		98.24		(578	)		35.95

(1)	The Principal Executive Officer (“PEO”) for all five years is Mr. Fallon.

(2)	For 2020, 2021 and 2022 the non-PEO NEOs includes Messrs. McKiernan, Bergonzi, Avitabile, Young and Harris. For 2023 the non-PEO NEOs includes Messrs. McKiernan, Bergonzi, Avitabile and Young. For 2024 the non-PEO NEOs includes Messrs. Schachinger, McKiernan, Bergonzi, Avitabile and Young.

(3)	Peer Group used for TSR comparisons reflects the S&P Financials Index as used in Item 5 of our annual Form 10-K (total shareholder return comparison graph).

(4)	Our company-selected measure is Adjusted Book Value, a non-GAAP measurement calculated by management for certain internal purposes, removing and adding certain components of GAAP Book Value, as described further in the Results of Operations section of Item 7 of our annual Form 10-K.

(5)

To calculate “compensation actually paid” for our CEO and other NEOs, the “total pay” referenced in the Summary Compensation Table was adjusted only in the value of equity awards, since the Company does not have any actuarially valued pension arrangements and the value of the special dividend is included in the Summary Compensation Table pay for 2023.


	PEO		Other NEO Average
Adjustments	2024		2024
Summary Compensation Table Total		3,904,488		1,599,377
Deduction for amount reported in “Stock Awards” column of the Summary Compensation Table		1,743,688		426,411
Addition of fair value at fiscal year (FY) end, of equity awards granted during the FY that remained outstanding		1,679,871		396,906
Addition of change in fair value at FY end versus prior FY end for awards granted in prior FYs that remained outstanding		427,455		99,890
Addition of fair value at FY end of equity awards granted and vested during the FY		53,740		27,104
Addition of change in fair value at vesting date versus prior FY end for awards granted in prior FYs that vested during the FY		97,593		118,623
Deduction of the fair value at the prior FY end for awards granted in a prior FY that failed to meet their vesting conditions		314,174		95,748
Compensation Actually Paid (CAP)		4,105,284		1,719,742

No adjustments were required in respect of elements not shown in the table above. The equity awards included above comprise time-based and performance-based restricted stock. The fair values were calculated on each of the required measurement dates using assumptions derived based on criteria consistent with those used for grant date fair value

calculations. The fair values of time-based restricted stock were determined based on the closing price of the Company’s common stock on the vesting dates. The measurement date fair values of performance-based stock awards, prior to the end of the performance period, were determined using a Monte Carlo fair value simulation. On the final measurement date at the end of the performance period, the fair value was determined based on the approved payout factor multiplied by the closing price of the Company stock on that date. On the vesting date (following the conclusion of the performance period for performance-based restricted stock awards), the fair value is determined based on the approved payout factor multiplied by the closing price of the Company stock on that date.

The final payout factors for performance-based stock awards granted in years 2018, 2019, 2020, 2021 and 2022 are as follows: 0% of target, 176% of target, 92% of target, 118% of target and 0% of target, respectively.

Company Selected Measure Name

Adjusted Book Value

Named Executive Officers, Footnote

For 2020, 2021 and 2022 the non-PEO NEOs includes Messrs. McKiernan, Bergonzi, Avitabile, Young and Harris. For 2023 the non-PEO NEOs includes Messrs. McKiernan, Bergonzi, Avitabile and Young. For 2024 the non-PEO NEOs includes Messrs. Schachinger, McKiernan, Bergonzi, Avitabile and Young.

Peer Group Issuers, Footnote

Peer Group used for TSR comparisons reflects the S&P Financials Index as used in Item 5 of our annual Form 10-K (total shareholder return comparison graph).

PEO Total Compensation Amount

$ 3,904,488

$ 17,140,688

$ 4,005,800

$ 4,020,800

$ 4,080,200

PEO Actually Paid Compensation Amount

$ 4,105,284

4,970,732

(3,035,560)

23,148,168

(769,780)

Adjustment To PEO Compensation, Footnote


	PEO		Other NEO Average
Adjustments	2024		2024
Summary Compensation Table Total		3,904,488		1,599,377
Deduction for amount reported in “Stock Awards” column of the Summary Compensation Table		1,743,688		426,411
Addition of fair value at fiscal year (FY) end, of equity awards granted during the FY that remained outstanding		1,679,871		396,906
Addition of change in fair value at FY end versus prior FY end for awards granted in prior FYs that remained outstanding		427,455		99,890
Addition of fair value at FY end of equity awards granted and vested during the FY		53,740		27,104
Addition of change in fair value at vesting date versus prior FY end for awards granted in prior FYs that vested during the FY		97,593		118,623
Deduction of the fair value at the prior FY end for awards granted in a prior FY that failed to meet their vesting conditions		314,174		95,748
Compensation Actually Paid (CAP)		4,105,284		1,719,742

Non-PEO NEO Average Total Compensation Amount

$ 1,599,377

7,093,600

1,595,180

1,609,800

1,730,136

Non-PEO NEO Average Compensation Actually Paid Amount

$ 1,719,742

2,206,884

(1,184,433)

9,009,475

(204,230)

Adjustment to Non-PEO NEO Compensation Footnote


	PEO		Other NEO Average
Adjustments	2024		2024
Summary Compensation Table Total		3,904,488		1,599,377
Deduction for amount reported in “Stock Awards” column of the Summary Compensation Table		1,743,688		426,411
Addition of fair value at fiscal year (FY) end, of equity awards granted during the FY that remained outstanding		1,679,871		396,906
Addition of change in fair value at FY end versus prior FY end for awards granted in prior FYs that remained outstanding		427,455		99,890
Addition of fair value at FY end of equity awards granted and vested during the FY		53,740		27,104
Addition of change in fair value at vesting date versus prior FY end for awards granted in prior FYs that vested during the FY		97,593		118,623
Deduction of the fair value at the prior FY end for awards granted in a prior FY that failed to meet their vesting conditions		314,174		95,748
Compensation Actually Paid (CAP)		4,105,284		1,719,742

Compensation Actually Paid vs. Total Shareholder Return

Compensation Actually Paid vs. Net Income

Compensation Actually Paid vs. Company Selected Measure

Total Shareholder Return Vs Peer Group

Tabular List, Table

Tabular List of Most Important Measures

The following table lists the measures we believe are most important in linking compensation actually paid to company performance during 2024.

(1)	Total Shareholder Return

(2)	Adjusted Book Value

Only these two measures are identified because, per the relevant definition set forth by the SEC, it is just these two which are qualifying measures currently used in the Company’s executive compensation program. Further details on these measures and how they feature in our compensation program can be found in our Compensation Discussion & Analysis.

Total Shareholder Return Amount

$ 152.78

144.72

138.17

169.78

70.75

Peer Group Total Shareholder Return Amount

173.34

132.83

118.49

132.5

98.24

Net Income (Loss)

$ (447,000,000)

$ (491,000,000)

$ (195,000,000)

$ (445,000,000)

$ (578,000,000)

Company Selected Measure Amount

13.79

17.66

28.73

31.77

35.95

PEO Name

Mr. Fallon

Measure:: 1

Pay vs Performance Disclosure

Name

Total Shareholder Return

Measure:: 2

Pay vs Performance Disclosure

Name

Adjusted Book Value

Non-GAAP Measure Description

Our company-selected measure is Adjusted Book Value, a non-GAAP measurement calculated by management for certain internal purposes, removing and adding certain components of GAAP Book Value, as described further in the Results of Operations section of Item 7 of our annual Form 10-K.

PEO | Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

$ (1,743,688)

PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

1,679,871

PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested

Pay vs Performance Disclosure

Adjustment to Compensation, Amount

427,455