75000 - Document - Cover Page
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75010 - Statement - Consolidated Balance Sheets
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75020 - Statement - Consolidated Balance Sheets (Parenthetical)
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75030 - Statement - Consolidated Statements Of Operations
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75040 - Statement - Consolidated Statements Of Operations (Parenthetical)
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75050 - Statement - Consolidated Statements Of Comprehensive Income (Loss)
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75060 - Statement - Consolidated Statements Of Changes In Shareholders' Equity
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75070 - Statement - Consolidated Statements Of Cash Flows
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75080 - Statement - Consolidated Statements Of Cash Flows 2
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75090 - Statement - Consolidated Statements Of Cash Flows 3
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995455 - Disclosure - Business Developments and Risks and Uncertainties
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995465 - Disclosure - Significant Accounting Policies
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995475 - Disclosure - Recent Accounting Pronouncements
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995485 - Disclosure - Variable Interest Entities
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995495 - Disclosure - Loss and Loss Adjustment Expense Reserves
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995505 - Disclosure - Fair Value Of Financial Instruments
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995515 - Disclosure - Investments
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995525 - Disclosure - Derivative Instruments
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995535 - Disclosure - Income Taxes
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995545 - Disclosure - Business Segments
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995555 - Disclosure - Earnings Per Share
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995565 - Disclosure - Accumulated Other Comprehensive Income
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995575 - Disclosure - Commitments and Contingencies
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995585 - Disclosure - Significant Accounting Policies (Policies)
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995595 - Disclosure - Business Developments and Risks and Uncertainties (Tables)
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995605 - Disclosure - Variable Interest Entities (Tables)
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995615 - Disclosure - Loss and Loss Adjustment Expense Reserves (Tables)
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995625 - Disclosure - Fair Value of Financial Instruments (Tables)
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995635 - Disclosure - Investments (Tables)
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995645 - Disclosure - Derivative Instruments (Tables)
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995655 - Disclosure - Income Taxes (Tables)
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995665 - Disclosure - Business Segments (Tables)
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995675 - Disclosure - Earnings Per Share (Tables)
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995685 - Disclosure - Accumulated Other Comprehensive Income (Tables)
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995695 - Disclosure - Commitments and Contingencies (Tables)
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995705 - Disclosure - Business Developments And Risks And Uncertainties (Narrative) (Detail)
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995715 - Disclosure - Business Developments and Risks and Uncertainties (Schedule of Discontinued Operations Components of Assets and Liabilities Held for Sale) (Detail)
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995725 - Disclosure - Business Developments and Risks and Uncertainties (Schedule of Results of Operations from Discontinued Operation) (Detail)
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995735 - Disclosure - Variable Interest Entities (Narrative) (Detail)
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995745 - Disclosure - Variable Interest Entities (Summary of Nonconsolidated VIEs Assets and Liabilities) (Detail)
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995755 - Disclosure - Loss and Loss Adjustment Expense Reserves (Schedule of Losses and Loss Adjustment Expenses Reserves and Recoveries) (Detail)
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995765 - Disclosure - Loss and Loss Adjustment Expense Reserves (Loss and LAE Activity) (Narrative) (Detail)
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995775 - Disclosure - Loss and Loss Adjustment Expense Reserves (Schedule of Loss and Loss Adjustment Expenses Reserves) (Detail)
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995785 - Disclosure - Loss and Loss Adjustment Expense Reserves (Schedule of Insurance Loss Recoverable) (Detail)
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995795 - Disclosure - Loss and Loss Adjustment Expense Reserves (Schedule Of Financial Guarantees And Related Claim Liability) (Detail)
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995805 - Disclosure - Fair Value of Financial Instruments (Narrative) (Detail)
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995815 - Disclosure - Fair Value of Financial Instruments (Quantitative Information Regarding The Significant Unobservable Inputs For Certain Assets Measured At Fair Value On A Recurring Basis) (Detail)
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995825 - Disclosure - Fair Value of Financial Instruments (Company's Assets And Liabilities Measured At Fair Value On Recurring Basis) (Detail)
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995835 - Disclosure - Fair Value of Financial Instruments (Company's Assets And Liabilities Measured At Fair Value On Recurring Basis) (Parenthetical) (Details)
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995845 - Disclosure - Fair Value of Financial Instruments (Fair Value Hierarchy Table Presents The Company's Assets And Liabilities At Fair Value Not Recorded On The Company's Consolidated Balance Sheet) (Detail)
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995855 - Disclosure - Fair Value of Financial Instruments (Fair Value Hierarchy Table Presents The Company's Assets And Liabilities At Fair Value Not Recorded On The Company's Consolidated Balance Sheet) (Parenthetical) (Details)
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995865 - Disclosure - Fair Value of Financial Instruments (Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Detail)
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995875 - Disclosure - Fair Value of Financial Instruments (Changes In Level 3 Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Parenthetical) (Details)
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995885 - Disclosure - Fair Value of Financial Instruments (Realized And Unrealized Gains And Losses Included In Earnings Pertaining To Level 3 Assets And Liabilities) (Detail)
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995895 - Disclosure - Fair Value of Financial Instruments (Effects Of Derivative Instruments On Consolidated Statements Of Operations) (Details)
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995905 - Disclosure - Fair Value of Financial Instruments (Gains And Losses On Fair Value Option Included In The Company's Consolidated Statements Of Operations) (Detail)
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995915 - Disclosure - Fair Value of Financial Instruments (Aggregate Fair Value And Remaining Contractual Principal Balance Outstanding On Fair Value Option) (Detail)
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995925 - Disclosure - Investments (Amortized Cost And Fair Value Of Available-For-Sale and Held-To-Maturity Investment Portfolios) (Detail)
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995935 - Disclosure - Investments (Distribution By Contractual Maturity Of Available-For-Sale and Held-To-Maturity Investments) (Detail)
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995945 - Disclosure - Investments (Narrative) (Detail)
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995955 - Disclosure - Investments (Gross Unrealized Losses Related To Available-For-Sale And Held-To-Maturity Investments) (Detail)
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995965 - Disclosure - Investments (Distribution Of Securities By Percentage Of Fair Value Below Book Value By More Than 5% For A Continuous Twelve Month Period Or Longer) (Detail)
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995975 - Disclosure - Investments (Securities Held In Unrealized Loss Position And Insured By Financial Guarantor) (Detail)
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995985 - Disclosure - Investments (Gross Realized Gains and Losses From Sales Of Available-For-Sale Securities) (Detail)
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995995 - Disclosure - Investments (Portion Of Unrealized Gains And Losses On Equity Investments Held) (Detail)
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996005 - Disclosure - Income Taxes (Income Taxes And Related Effective Tax Rates) (Detail)
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996015 - Disclosure - Income Taxes (Narrative) (Detail)
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996025 - Disclosure - Business Segments (Narrative) (Detail)
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996035 - Disclosure - Business Segments (Summary Of Company's Segment Results) (Detail)
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996045 - Disclosure - Business Segments (Summary Of Company's Segment Results) (Parenthetical) (Detail)
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996055 - Disclosure - Earnings Per Share (Computation Of Basic And Diluted Earnings Per Share) (Detail)
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996065 - Disclosure - Earnings Per Share (Narrative) (Detail)
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996075 - Disclosure - Accumulated Other Comprehensive Income (Changes In The Components Of AOCI) (Detail)
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996085 - Disclosure - Accumulated Other Comprehensive Income (Details Of The Reclassification From AOCI) (Detail)
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996095 - Disclosure - Commitments and Contingencies (Narrative) (Detail)
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Increase (Decrease) in Interest Payable, Net
Accrued interest payable
Segments [Domain]
Discounted Cash Flow Type Certificate [Member]
Discounted cash flow type certificate.
Entity Incorporation, State or Country Code
Repayments of Other Long-term Debt
Principal paydowns of investment agreements
Balance (in preferred stock shares)
Preferred Stock, Shares Issued
Balance (in preferred stock shares)
Preferred stock, issued
Balance (in preferred stock shares)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Ending balance, fair value liabilities
Beginning balance, fair value liabilities
Fair value, liabilities
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
Company's Assets And Liabilities Measured At Fair Value On Recurring Basis
Unearned Premium Revenue [Member]
Unearned Premium Revenue [Member]
Unearned Premium Revenue Member
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Non-cash financing activities:
Long-Term Debt, Excluding Current Maturities, Total
Long-term Debt, Excluding Current Maturities
Long-term debt
Proceeds from (Repayments of) Notes Payable
Principal paydowns of variable interest entity debt
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer
12 months or longer, fair value
Other (in shares)
Stockholders' Equity, Other Shares
Equity [Abstract]
Entity Current Reporting Status
Other Commitment, Total
Other Commitment
Other Commitment
Municipal Bonds [Member]
State and municipal bonds [Member]
Deferred Policy Acquisition Costs, Amortization Expense
Amortization of deferred acquisition costs
Operating Expenses [Abstract]
Expenses:
Puerto Rico Electric Power Authority.
Puerto Rico Electric Power Authority [Member]
Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net
Accounts receivable
Fair Value, Inputs, Level 2 [Member]
Fair Value Inputs Level 2 [Member]
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Common Stock, Shares Authorized
Common stock, authorized shares
Product and Service [Axis]
Fair Value by Liability Class [Domain]
Document Fiscal Period Focus
Schedule of Insured Financial Obligations with Credit Deterioration, Number of Contracts Issued and Outstanding
Number of issues
Entity Shell Company
Medium-term Notes [Member]
Medium-Term Note [Member]
Medium Term Notes [Member]
Payment for Other Operating Activity
Operating expenses paid and other operating
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Issuances
Issuances, liabilities
Schedule of Gain (Loss) on Securities [Table]
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalent
Cash and cash equivalents
Realized gains/(losses), assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Realized Gain (Loss) Included in Earnings
Amount of realized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).
Derivative Assets [Member]
Derivative Assets [Member]
Derivative Assets.
Recorded due to credit losses in AOCI.
Recorded Due To Credit Losses In AOCI [Member]
Recorded Due To Credit Losses in AOCI [Member]
Receivable Type [Axis]
Balance (in common stock shares)
Common Stock, Shares, Issued
Balance (in common stock shares)
Common stock, issued shares
Balance (in common stock shares)
Asset Class [Domain]
Difference Between The Aggregate Fair Value And The Aggregate Remaining Contractual Principal Balance Outstanding For Loans And Long Term Debt For Which Fair Value Option Has Been Elected [Text Block]
Difference Between Aggregate Fair Value And Aggregate Remaining Contractual Principal For Loans And Long Term Debt For Which Fair Value Option Has Been Elected [Table Text Block]
Difference Between Aggregate Fair Value And The Aggregate Remaining Contractual Principal Balance Outstanding
Statement [Table]
Financial Guarantee Insurance Contracts Claim Liability Significant Components Of Change In Assumptions
Financial Guarantee Insurance Contracts Claim Liability Significant Components Of Change In Assumptions
Changes in assumptions
Disclosure regarding factors used to determine that the impairment of securities not categorized as trading securities (hence equal to available for sale and held to maturity securities) where cost exceeds fair value. This item contains disclosure of the number of investment positions in the investments determined to be temporarily impaired.
Investment Securities In Unrealized Loss Positions Qualitative Disclosure Number Of Positions For Continuous Twelve Month Period
Number of securities in unrealized loss position for a continuous 12 month period
Investments With Unrealized Loss Severity Greater Than Five Percent.
Fair Value Below Book Value Greater Than Five Percent [Member]
Greater Than 5% [Member]
Guarantor Obligations, Nature [Domain]
Loans Receivable and Other Instruments At Fair Value [Member]
Residential Loans Receivable [Member]
Loans Receivable and Other Instruments At Fair Value [Member]
Loans Receivable And Other Instruments At Fair Value Member
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Arising During Period, before Tax
Unrealized gains (losses) arising during the period
Outstanding insured bonds.
Outstanding Insured Bonds
Outstanding insured bonds
Statement [Line Items]
Cumulative effect of prospective application of new accounting principle
Treasury Stock, Value, Acquired, Cost Method
Treasury shares acquired under share repurchase program
Debt Securities, Trading, and Equity Securities, FV-NI, Total
Debt Securities, Trading, and Equity Securities, FV-NI
Investments carried at fair value
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Other Comprehensive Income (Loss)
Unrealized (gains)/losses included in OCI, liabilities
Unrealized (gains)/losses included in OCI, liabilities
Entity Filer Category
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings
Total revenues
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Market Prices of Similar Liabilities Adjusted for Financial Guarantees Provided to VIE Obligations [Member]
Market Prices of Similar Liabilities Adjusted for Financial Guarantees Provided to VIE Obligations [Member]
Liabilities and Equity
Total liabilities and equity
Residential Mortgage Backed Securities [Member]
Residential Mortgage Backed Securities [Member]
Mortgage-backed [Member]
Residential Mortgage Backed Agency [Member]
Residential Mortgage backed Agency [Member]
Residential Mortgage Backed Agency [Member]
Residential Mortgage-Backed Agency [Member]
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent, Total
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent
Effective tax rate
Payments to Acquire Marketable Securities
Purchases of available-for-sale investments
Disposal Group, Including Discontinued Operation, Costs of Goods Sold
Cost of sales
Corporate Obligations [Member]
Corporate Obligations Member
Approximate percentage of level 3 assets at fair value in total assets measured at fair value.
Approximate Percentage Of Level 3 Assets At Fair Value In Total Assets Measured At Fair Value
Percentage of level 3 assets at fair value in total assets measured at fair value value
Other Security Investments [Member]
Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve
Loss and loss adjustment expense reserves
Deferred Tax Assets, Valuation Allowance
Valuation allowance on net deferred tax asset
Consolidated Entity Excluding Variable Interest Entities (VIE) [Member]
Non Variable Interest Entity [Member]
Total revenues of all Variable Interest Entities consolidated by the reporting entity
Revenues Of Consolidated Vies
Revenues of consolidated VIEs
Pledged Status [Axis]
Other Noncash Income (Expense), Total
Other Noncash Income (Expense)
Other operating
Other asset backed [Member]
Other Asset Backed [Member]
Other Asset-Backed [Member]
Other Asset Backed Member
Debt Securities, Available-for-sale, Noncurrent
Fixed-maturity securities held as available-for-sale, at fair value (amortized cost $1,191 and $1,163)
Asset-backed Securities [Member]
Asset-backed [Member]
Insured Derivatives [Member]
Insured Derivatives [Member]
Insured Derivatives.
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
Summary of company's segment results
Variable Interest Entity [Table]
Interest on variable interest entities, net
Interest On Variable Interest Entities, Net
Interest on variable interest entities, net.
Underlying Asset Class [Domain]
Loss payments for cases.
Loss Payments For Cases
Loss payments for cases
Schedule Of Loss And Loss Adjustment Expense Reserve [Text Block]
Schedule Of Loss And Loss Adjustment Expense Reserve [Table Text Block]
Schedule Of Loss And Loss Adjustment Expenses Reserves
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Amortized Cost
Due after one year through five years
Foreign Exchange Recognized in OCI or Earnings, assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Foreign Exchange Recognized in Other Comprehensive Income (Loss) or Earnings
Amount of foreign exchange recognized in other comprehensive income (OCI) or earnings from asset measured at fair value on recurring basis using unobservable input (level 3).
Market Prices Of VIE Assets Adjusted For Financial Guarantees Provided Or Market Prices Of Similar Liabilities [Member]
Market Prices Of VIE Assets Adjusted For Financial Guarantees Provided Or Market Prices Of Similar Liabilities [Member]
Significant Accounting Policies [Text Block]
Significant Accounting Policies
Event axis
Event [Axis]
Variable Interest Entity Notes [Member]
Variable Interest Entity Notes [Member]
Variable Interest Entity Notes Member
Guarantor Obligations, Nature [Axis]
Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block]
Loss and Loss Adjustment Expense Reserves
Guaranteed Investment Agreements Fair Value
Guaranteed Investment Agreements Fair Value
Investment agreements
Equity Securities [Member]
Unobservable Input [Axis]
Unobservable Input Axis
EBITDA Multiples Discount Rate Hard Asset Values Type Certificate Values Weightings [Member]
EBITDA MultiplesDiscount Rate Hard Asset Values Type Certificate Values Weightings [Member]
EBITDA Multiples Discount Rate Hard Asset Values Type Certificate Values Weightings.
Investments Classified by Contractual Maturity Date [Table Text Block]
Distribution By Contractual Maturity Of Available-For-Sale and Held-To-Maturity Investments
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
Net income (loss) per common share attributable to MBIA Inc. - basic
Net income (loss) per share attributable to MBIA Inc. - basic
Unrealized loss
Available For Sale Securities Gross Unrealized Loss Accumulated In Investments
Amount of accumulated pre-tax unrealized losses before deducting pre-tax unrealized gains on investments in available-for-sale securities impacting investments.
Insurance Loss Recoverable And Changes In Recoveries Of Unpaid Losses Accretion Of Recoveries
Insurance Loss Recoverable And Changes In Recoveries Of Unpaid Losses Accretion Of Recoveries
Accretion of Recoveries
Variable Interest Entity [Line Items]
Increase decrease in other net realized (gains) losses
Increase decrease in other net Realized Gains Losses
Increase Decrease In Other Net Realized Gains Losses
Other net realized (gains) losses
Fair Value, Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Changes In Level 3 Liabilities Measured At Fair Value On A Recurring Basis
Notes Payable, Fair Value Disclosure
Medium-term notes, financial instruments carried at fair value
Insurance Loss Recoverable And Changes In Recoveries Of Unpaid Losses Change In Discount Rate
Insurance Loss Recoverable And Changes In Recoveries Of Unpaid Losses Change In Discount Rate
Changes in Discount Rates
Change In Unrealized Gains (Losses) For The Period Included In Earnings For Assets And Liabilities Still Held [Member]
Change In Unrealized Gains Losses For Period Included In Earnings For Assets And Liabilities Still Held [Member]
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets and Liabilities still held [Member]
Equity investments.
Equity Investments [Member]
Equity investments [Member]
Roll forward of Insurance Loss Recoverable [Line Items]
Roll forward of Insurance Loss Recoverable [Line Items]
Adjustments for New Accounting Pronouncements [Axis]
Consolidation Items [Domain]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Changes In Level 3 Assets Measured At Fair Value On A Recurring Basis
Entity Small Business
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit)
Retained earnings (deficit)
Net gains (losses) on financial instruments at fair value and foreign exchange.
Net Gains (Losses) on Financial Instruments at Fair Value and Foreign Exchange [Member]
Net Gains (Losses) on Financial Instruments at Fair Value and Foreign Exchange [Member]
Nature of Operations [Text Block]
Business Developments and Risks and Uncertainties
Preferred Stock [Member]
Preferred Stock [Member]
Variable interest entity debt extinguishment
Variable Interest Entity Debt Extinguishment
Variable interest entity debt extinguishment.
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Liability, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]
Changes in Loss and LAE Reserves
Changes in Loss and LAE Reserves
Discontinued operation income loss on disposal group held for sale discontinued operation.
Discontinued Operation Income Loss On Disposal Group Held For Sale Discontinued Operation
Increase (decrease) on loss on disposal group
Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total
Weighted Average Number Diluted Shares Outstanding Adjustment
Potentially dilutive securities excluded from the calculation of diluted EPS because of antidilutive affect
Amendment Flag
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, before Tax
Unrealized gains (losses) arising during the period
Product and Service [Domain]
Major Property Class [Domain]
Debt
Disposal group including discontinued operation debt.
Disposal Group Including Discontinued Operation Debt
Claim Liability Domain
Claim Liability [Domain]
Schedule Of Insurance Loss Reserves And Recoverables For Insured Obligations [Text Block]
Schedule Of Insurance Loss Reserves And Recoverables For Insured Obligations [Table Text Block]
Present Value Of The Probability-Weighted Future Claim Payments And Recoveries
Fair Value Option Contractual Outstanding Principal Loans Receivable
Fair Value Option Contractual Outstanding Principal Loans Receivable
Loans receivable and other instruments, contractual outstanding principal
Liabilities and Equity
Liabilities and Equity [Abstract]
Entity Address, Postal Zip Code
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash provided (used) by operating activities
Decrease in operating lease liability
Increase (Decrease) in Operating Lease Liability
Represents the Company's balance sheet carrying amount of the financial guarantee insurance contract obligations with third parties. The gross balance sheet carrying amount comprises the unearned premium revenue and the loss and loss adjustment expense reserves balances
Financial Guarantee Gross
Gross liability (recoverable)
DisclosureEarningsPerShareScheduleOfBasicAndDilutedEarningsPerShareAbstract
Disclosure Earnings Per Share Schedule Of Basic And Diluted Earnings Per Share [Abstract]
Caution List High [Member]
Caution List High Member
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description
Approximate percentage of level 3 liabilities at fair value in total liabilities measured at fair value.
Approximate Percentage Of Level 3 Liabilities At Fair Value In Total Liabilities Measured At Fair Value
Percentage of level 3 liabilities at fair value in total liabilities measured at fair value
Common Stock [Member]
Common Stock [Member]
Policyholder Benefits and Claims Incurred, Net, Total
Policyholder Benefits and Claims Incurred, Net
Losses and loss adjustment
Other Insured [Member]
Other Insured [Member]
Other Insured.
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
Total Fair Value Of Company's Derivative Assets And Liabilities By Instrument And Balance Sheet Location, Before Counterparty Netting
Payments to Acquire Trading Securities Held-for-investment
Purchases of investments at fair value
Gains And Losses Realized And Unrealized Earnings [Domain]
Gains And Losses Realized And Unrealized Earnings Domain
Fair Value Option Contractual Outstanding Principal Long-Term Debt Instruments
Fair Value Option Contractual Outstanding Principal Long Term Debt Instruments
Long-term debt instruments, contractual outstanding principal
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity
Total adjustments to income (loss) from continuing operations
Loans Receivable at Fair Value [Member]
Loans Receivable [Member]
Loans Receivable and Other Instruments at Fair Value [Member]
Deferred acquisition costs and operating.
Deferred acquisition costs and operating
Amortization of deferred acquisition costs and operating
Accumulated Gain (Loss), Financial Liability, Fair Value Option, Attributable to Parent [Member]
Instrument-specific credit risk of liabilities measured at fair value, net [Member]
Portion at Fair Value Measurement [Member] [Default]
Portion at Fair Value Measurement [Member]
Entity Address, Address Line One
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3
Transfers out of level 3, assets
Roll forward of Insurance Loss Recoverable [Table]
Roll Forward Of Insurance Loss Recoverable Table
Fair Value Hierarchy and NAV [Axis]
Financial Instruments, Owned, at Fair Value, Total
Financial Instruments, Owned, at Fair Value
Fair value of securities pledged as collateral
Earnings Per Share [Abstract]
Basic and diluted earnings per share:
Net income (loss) per common share attributable to MBIA Inc. - basic and diluted
Supplemental Cash Flow Information [Abstract]
Supplementary Disclosure of Consolidated Cash Flow Information:
Other Liabilities [Member]
Investment Type [Axis]
Debt Securities, Available-for-Sale, Unrealized Loss Position
Fair value
Total, fair value
Gross Unrealized Losses Related To Available-For-Sale And Held-To-Maturity Investments
Schedule of Unrecognized Gain (Loss) on Investments [Table Text Block]
Schedule of unrecognized gain (loss) on investments.
Loans carried at fair value.
Loans Carried at Fair Value [Member]
Loans Carried at Fair Value [Member]
Caution List Low [Member]
Caution List Low Member
Net Income (Loss) Attributable to Noncontrolling Interest, Total
Net Income (Loss) Attributable to Noncontrolling Interest
Less: Net income from discontinued operations attributable to noncontrolling interest
Less: Net income (loss) attributable to noncontrolling interests
Disposal Group, Including Discontinued Operation, Other Liabilities
Accrued expenses and other
Disposal Group, Including Discontinued Operation, Revenue
Revenues
Proceeds from variable interest entity debt
Proceeds From Variable Interest Entity Notes
Proceeds from variable interest entity notes.
Document Type
This element represents the gross amount of claim payments during the period
Claim Payments
Claims payments
Entity Central Index Key
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Table]
Disposal Group, Including Discontinued Operation, Assets [Abstract]
Assets held for sale
Investments, Debt and Equity Securities [Abstract]
Valuation Approach and Technique [Axis]
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation
Net increase (decrease) in cash and cash equivalents
Subsequent Event Type [Domain]
Fair Value Of Securities On Deposit With Various Regulatory Authorities
Fair Value Of Securities On Deposit With Various Regulatory Authorities
Fair value of securities on deposit with various regulatory authorities
Loss And Loss Adjustment Expense Reserves [Table]
Loss And Loss Adjustment Expense Reserves [Table]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)
Unrealized gains/(losses) included in OCI, assets
Fair Value Option Contractual Outstanding Principal Loans Receivable 90 Days or More Past Due
Fair value option contractual outstanding principal loans receivable 90 days or more past due
Loans receivable and other instruments, 90 days or more past due, contractual outstanding principal
Financial Guarantee [Member]
Financial Guarantee [Member]
Foreign currency translation [Member]
Foreign currency translation [Member]
Common Stock, Par or Stated Value Per Share
Common stock, par value
Type of Adoption [Domain]
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent
Total other comprehensive income (loss)
Other comprehensive income (loss)
Total Gains Losses Included In Earnings [Member]
Total Gains (Losses) Included in Earnings [Member]
Total Gains Losses Included In Earnings Member
Liabilities [Abstract]
Liabilities:
Increase (Decrease) in Other Operating Liabilities, Total
Increase (Decrease) in Other Operating Liabilities
Other assets and liabilities
Debt Securities, Available-for-Sale, Amortized Cost
Total available-for-sale, amortized cost
Financial Guarantee Insurance Contract, Claim Liability, Weighted-Average Risk-Free Discount Rate
Weighted average risk-free rates used to discount claim liability
Fair Value
Total fixed-maturity investments
Total available-for-sale, fair value
Realized Investment Gains (Losses), Total
Realized Investment Gains (Losses)
Realized investment gains (losses)
Net realized investment gains (losses)
Net realized investment (gains) losses
Parent [Member]
Total Shareholders' Equity Of MBIA Inc. [Member]
Consolidation, Eliminations [Member]
Consolidation Elimination [Member]
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Foreign Currency translation, net [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases
Purchases, assets
Greater Than Fifteen Percent To Twenty Five Percent [Member]
> 15% To 25% [Member]
Greater Than Fifteen Percent To Twenty Five Percent Member
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Estimate of Fair Value Measurement [Member]
Fair Value [Member]
Derivative, Notional Amount
Derivative notional amount
Securities held in unrealized loss position and insured by financial guarantor and the related insurance loss reserve on company insured investments.
Securities Held In Unrealized Loss Position And Insured By Financial Guarantor And Related Insurance Loss Reserve On Company Insured Investments [Table Text Block]
Securities Held In Unrealized Loss Position And Insured By Financial Guarantor and The Related Insurance Loss Reserve On Company Insured Investments
Current Fiscal Year End Date
U S Public Finance Insurance [Member]
US Public Finance Insurance [Member]
U S Public Finance Insurance Member
Document Quarterly Report
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Ceded Premiums Earned
Ceded premiums earned
Entity Address, State or Province
Fair Value, Option, Aggregate Differences, Long-term Debt Instruments
Long-term debt instruments, difference
Other Fixed Maturity Investments [Member]
Other Fixed Maturity Investments Member
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding
Preferred stock, outstanding
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income (loss) attributable to MBIA Inc.
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax
Gross unrealized gains
Available For Sale Securities And Held To Maturity Securities [Table]
Available For Sale Securities And Held To Maturity Securities Table
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Financial Guarantee Insurance Product Line [Member]
Financial Guarantee Insurance Segment [Member]
Surveillance Categories [Domain]
Surveillance Categories Domain
Debt Securities, Trading, and Equity Securities, FV-NI [Table]
Greater Than Fifty Percent [Member]
> 50% [Member]
Greater Than Fifty Percent Member
Income (Loss) from Continuing Operations, Per Basic Share
Continuing operations - Basic
Continuing operations - basic
Long-term Debt, Fair Value
Long-term debt
Securities In Unrealized Loss Position [Member]
Securities In Unrealized Loss Position Member
Subsequent Event [Member]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax
Amounts reclassified from AOCI
Non-insured interest rate derivatives [Member]
Non-insured Derivatives [Member]
Non Insured Derivatives [Member]
Non Insured Derivatives Member
Schedule of insured financial obligations with credit deterioration reductions of gross claim liability discount, net.
Schedule Of Insured Financial Obligations With Credit Deterioration Reductions Of Gross Claim Liability Discount Net
Discount, net
Discount, net
Proceeds from Sale of Debt Securities, Available-for-Sale
Proceeds from sales
Sales of available-for-sale investments
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income [Member]
Schedule of Insured Financial Obligations with Credit Deterioration, Statement of Financial Position, Unearned Premium Revenue
Unearned premium revenue
Customer [Domain]
Disclosed At Fair Value Not Recorded At Fair Value [Axis]
Disclosed At Fair Value Not Recorded At Fair Value Axis
Treasury Stock, Common, Shares
Treasury stock, shares
Balance (in treasury stock shares)
Balance (in treasury stock shares)
Major Property Class [Axis]
Unrealized (gains)/losses included in earnings, liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Unrealized Gain (Loss) Included in Earnings
Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).
Schedule Of Insurance Loss Recoverable [Text Block]
Schedule Of Insurance Loss Recoverable [Table Text Block]
Schedule Of Insurance Loss Recoverable
Preferred Stock, Value, Issued
Preferred stock, par value $1 per share; authorized shares—10,000,000; issued and outstanding—none
Decrease in ROU
Increase (Decrease) in Right Of Use Assets
Increase (decrease) in right of use assets.
Value Disclosed At Fair Value Not Recorded At Fair Value [Member]
Value Disclosed At Fair Value Not Recorded At Fair Value [Member]
Value Disclosed At Fair Value Not Recorded At Fair Value Member
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification adjustments for (gains) losses included in net income (loss)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax
Schedule of Insured Financial Obligations with Credit Deterioration, Insured Contractual Payments Outstanding, Principal
Principal
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost
Mortgage-backed and asset-backed
Minimum [Member]
Minimum [Member]
Financial Instrument [Axis]
Financial Instrument [Axis]
Variable Interest Entities [Abstract]
Variable interest entities.
Schedule of Insured Financial Obligations with Credit Deterioration, Gross Claim Liability
Gross claim liability
Liabilities Subject to Compromise, Provision for Expected and Allowed Claims
Liabilities Subject to Compromise, Provision for Expected and Allowed Claims
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs Level 3 [Member]
Fair Value Inputs Level 3 [Member]
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurements Nonrecurring [Member]
Equity Securities, Investment Summary [Member]
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Held To Maturity Securities [Abstract]
Unobservable Input [Domain]
Unobservable Input Domain
Other Payable [Member]
Other payable [Member]
Other payable.
Residential Mortgage Loans [Member]
Residential Mortgage Loans Member
Total Loans Receivable and Other Instruments [Member]
Total Loans Receivable And Other Instruments Member
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Amortized Cost
Due after ten years
Repayments of Medium-Term Note
Principal paydowns of medium-term notes
Investment Notes [Domain]
Investment Notes [Domain]
Operating Loss Carryforwards
NOL carryforward
Gain (Loss) on Securities [Line Items]
Gain (Loss) on Investments [Line Items]
Other Income
Other net realized gains (losses)
Disposal Group, Including Discontinued Operation, Liabilities [Abstract]
Liabilities held for sale
Commitments and Contingencies
Commitments and contingencies (Refer to Note 12: Commitments and Contingencies)
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Total
Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid
Financial guarantee losses and loss adjustment expenses paid
Reclassification out of Accumulated Other Comprehensive Income [Table]
Accumulated other comprehensive income loss, net deferred taxes
Accumulated other comprehensive income loss deferred income taxes
Accumulated other comprehensive income (loss), taxes
Caution List Medium [Member]
Caution List Medium Member
Financial Guarantee Insurance Contracts, Claim Liability [Table Text Block]
Schedule of Financial Guarantees And Related Claim Liability
Carrying amount as of the balance sheet date of paid insurance policy claims and LAE expense expected to be recovered.
Insurance Loss Recoverable
Gross Reserve ending balance, Insurance loss recoverable
Gross Reserve beginning balance, Insurance loss recoverable
Insurance Loss Recoverable
Insurance loss recoverable
Cash Provided by (Used in) Financing Activity, Continuing Operation [Abstract]
Cash flows from financing activities:
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Member]
Variable Interest Entity Primary Beneficiary [Member]
Percentage that a security's fair value is below its book value on available-for-sale and held-to-maturity securities. This percentage is used as a severity threshold for disclosing information about securities in an unrealized loss position for a continuous 12 month period or longer.
Percentage Of Securities Book Value Exceeded Market Value
Rate that a security's fair value is below book value
Fair Value Option Aggregate Fair Value Loans Receivable
Fair Value Option Aggregate Fair Value Loans Receivable
Loans receivable and other instruments, fair value
Liability for Claims and Claims Adjustment Expense, Total
Liability for Claims and Claims Adjustment Expense
Gross loss and LAE reserve, ending balance
Gross loss and LAE reserve, beginning balance
Loss and loss adjustment expense reserves
Disclosure - Business Segments (Summary Of Company's Segment Results) [Abstract]
Disclosure Business Segments Summary Of Companys Segment Results [Abstract]
Text Block [Abstract]
Text Block [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net income (loss)
Net income (loss)
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Available For Sale Securities Realized Gain Loss [Abstract]
Disposal Group, Including Discontinued Operation, Operating Expense
Operating
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax
Reclassification adjustments for (gains) losses included in net income (loss)
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Basic weighted average shares
Basic
International And Structured Finance Insurance [Member]
International And Structured Finance Insurance [Member]
International And Structured Finance Insurance Member
Greater Than Twenty Five Percent To Fifty Percent [Member]
> 25% To 50% [Member]
Greater Than Twenty Five Percent To Fifty Percent Member
Stockholders' Equity, Other
Other
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Income tax rate reconciliation from statutory to effective tax rate
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent
Income (loss) from continuing operations
Income (loss) from continuing operations
Net income (loss) from continuing operations attributable to MBIA Inc.
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss
12 months or longer, unrealized losses
Segments [Axis]
Income (loss) before income taxes from discontinued operations
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax
Income (loss) before income taxes from discontinued operations
Asset Pledged as Collateral [Member]
Loans Receivable, Fair Value Disclosure
Loans receivable at fair value
Cash
Cash
Receivables, Fair Value Disclosure [Abstract]
Insurance loss reserve
Liability For Claims And Claims Adjustment Expense Insured By Financial Guarantor
The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events by financial guarantor that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.
Total shareholders' equity of MBIA Inc.
Stockholders' Equity Attributable to Parent
Gain (loss) on cumulative changes in instrument-specific credit risk of liabilities elected under the fair value option
Ending balance
Beginning balance
Preferred Stock, Par or Stated Value Per Share
Preferred stock, par value
Schedule of Variable Interest Entities [Table Text Block]
Variable Interest Entities
Derivatives Not Designated as Hedging Instruments [Table Text Block]
Effects Of Derivative Instruments On Consolidated Statements Of Operations
Basis of Accounting, Policy [Policy Text Block]
Basis of Presentation
Statement of Stockholders' Equity [Abstract]
Number of variable interest entities consolidated
Number Of Variable Interest Entities Consolidated
Number of variable interest entities consolidated.
Valuation Approach and Technique [Domain]
Discount rate.
Discount Rate [Member]
Treasury Stock, Common [Member]
Treasury Stock [Member]
Embedded Derivative, Fair Value of Embedded Derivative Asset
Embedded derivative assets
Fair Value Disclosures [Text Block]
Fair Value Of Financial Instruments
Intersegment revenues in the consolidated group.
Revenue From Transactions With Other Operating Segments Of Same Entity
Inter-segment revenues
Currency Derivatives [Member]
Currency Derivatives [Member]
Disposal Group, Including Discontinued Operation, Other Assets
Other assets
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Premiums Receivable [Member]
Premiums Receivable [Member]
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share, Total
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share
Discontinued operations - Basic
Discontinued operations - basic
Segment Reporting, Other Segment Item, Amount
Other segment items
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Settlements, liabilities
Settlements, liabilities
Settlements, liabilities
Represents the number of VIEs deconsolidated during the period.
Number Of Variable Interest Entities Deconsolidated
Number of variable interest entities deconsolidated
Fees And Reimbursements
Fees and reimbursements
Fees and reimbursements.
Interest Expense, Operating and Nonoperating
Interest Expense, Total
Interest
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
This item represents revenue grnerated from contracts with customers.
Revenue From Customers
Revenues
Entity [Domain]
Schedule of Investments [Line Items]
Schedule Of Investments [Line Items]
Consumer Asset Backed Member
Consumer Asset Backed [Member]
Consumer Asset Backed [Member]
Treasury Stock, Value, Total
Treasury Stock, Value
Treasury stock, at cost--232,252,593 and 232,675,865 shares
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Portion Attributable to Parent [Abstract]
Available-for-sale securities with no credit losses:
Investments pledged as collateral, amortized cost
Investments Pledged As Collateral Amortized Cost
The amortized cost of investments pledged as collateral.
Collateral [Axis]
Credit Derivatives [Member]
Credit Derivatives [Member]
Credit derivatives.
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances
Issuances, assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers Into Level 3
Transfers into Level 3, liabilities
Discount Rate EBITDA Multiple Initial Inventory Purchase Excess Factor EBITDA Royalty Share [Member]
Discount Rate EBITDA Multiple Initial Inventory Purchase Excess Factor EBITDA Royalty Share [Member]
Discount Rate EBITDA Multiple Initial Inventory Purchase Excess Factor EBITDA Royalty Share.
Entity Address, City or Town
Claim Liability [Axis]
Claim Liability [Axis]
Perpetual Debt and Equity Investments [Member]
Perpetual debt and equity investments [Member]
Perpetual debt and equity investments.
Number of Reportable Segments
Number of reportable segments
Security Exchange Name
Discounted Cash Flow [Member]
Discounted Cash Flow Member
Assets Held for Sale [Member]
Assets Held for Sale.
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount
Maximum Exposure to Loss
Intersegment Eliminations [Member]
Intersegment Elimination [Member]
Counterparty Name [Axis]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income (loss) from continuing operations before income taxes
Income (loss) from continuing operations before income taxes
Exchange-traded bond fund.
Exchange-traded Bond Fund
Exchange-traded bond fund
Book Value
Total fixed-maturity investments
Fixed-maturity securities held as available-for-sale, amortized cost
Global Structured Finance [Member]
Global Structured Finance [Member]
Global Structured Finance [Member]
Measurement Input Type [Domain]
Distribution of securities where fair value is below market value by greater than 5% to 15%.
Greater Than Five Percent To Fifteen Percent [Member]
> 5% To 15% [Member]
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share, Total
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share
Discontinued operations - Diluted
Discontinued operations - diluted
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Total
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation
Cash and cash equivalents - beginning of period
Cash and cash equivalents - end of period
Interest Paid, Excluding Capitalized Interest, Operating Activity
Interest paid, net of interest converted to principal
Measurement Basis [Axis]
Range [Domain]
Document Period End Date
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after 10 Years, Fair Value
Due after ten years
Fair Value Hierarchy and NAV [Domain]
Schedule of insured financial obligations with credit deterioration net claim liability recoverable.
Schedule of Insured Financial Obligations With Credit Deterioration Net Claim Liability Recoverable
Net claim liability (recoverable)
Premium Earned Net Financial Guarantee Insurance Contracts
Premium Earned Net Financial Guarantee Insurance Contracts
Scheduled premiums earned
Statement of Financial Position [Abstract]
Collateralized Debt Obligations [Member]
Collateralized debt obligations [Member]
Collateralized Debt Obligations [Member]
Embedded Derivative, Fair Value of Embedded Derivative, Net [Abstract]
Gross realized losses
Gross realized losses
Debt Securities, Available-for-Sale, Realized Loss
Reclassification out of Accumulated Other Comprehensive Income [Member]
Amounts reclassified from AOCI [Member]
Class of Stock [Axis]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions
Number of securities
Intersegmentexpenses in the consolidated group.
Expense From Transactions With Other Operating Segments Of Same Entity
Inter-segment expenses
Inter-segment service charge
Liabilities
Total liabilities
Carrying Value of VIE Liabilities
Financial Instruments [Domain]
Financial Instruments [Domain]
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]
Fair Value Hierarchy Table Presents The Company's Assets And Liabilities Not Recorded At Fair Value On The Company's Consolidated Balance Sheet
This element represents the weighted average contractual maturity period in years for securities in an unrealized loss position.
Weighted Average Contractual Maturity Period Of Securities Unrealized Loss Position
Weighted average contractual maturity period in years for securities in an unrealized loss position
Derivative Instruments, Gain (Loss) [Line Items]
Financial Guarantee Insurance Contracts, Claim Liability, Significant Components of Change, Accretion of Discount
Accretion of claim liability discount
Money Market Securities [Member]
Money Market Securities Member
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss
Less than 12 months, unrealized losses
Weighted Average Number of Shares Outstanding, Diluted, Total
Weighted Average Number of Shares Outstanding, Diluted
Diluted weighted average shares
Diluted
Entity File Number
Market prices of similar liabilities or internal cash flow models adjusted for financial guarantees provided to VIE obligations.
Market prices of similar liabilities or internal cash flow models adjusted for financial guarantees provided to V I E obligations [Member]
Market Prices of Similar Liabilities or Internal Cash Flow Models Adjusted for Financial Guarantees Provided to VIE Obligations [Member]
Income (loss) from discontinued operations net of income tax.
Income (Loss) From Discontinued Operations Net Of Income Tax
Income (loss) from discontinued operations, net of income taxes
National public finance guarantee corporation.
National Public Finance Guarantee Corporation [Member]
Other Assets, Total
Other Assets
Other assets
Derivative Instruments, Gain (Loss) [Table Text Block]
Effect Of Derivative Instruments On Consolidated Statements Of Operations
Fixed-income Fund [Member]
Fixed-income Fund.
Cover [Abstract]
Reconciliation of net income loss to net cash provided used by operating activities [abstract]
Reconciliation Of Net Income Loss To Net Cash Provided Used By Operating Activities [Abstract]
Reconciliation of net income (loss) to net cash provided (used) by operating activities:
Measurement Input Type [Axis]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Amortized Cost
Due after five years through ten years
Medium-term Notes, Total
Medium-Term Note
Medium-term notes
Medium-term notes (includes financial instruments carried at fair value of $43 and $46)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax
Reclassification adjustments for (gains) losses included in net income (loss)
Residential Mortgage-Backed Non Agency [Member]
Residential Mortgage Backed Non Agency [Member]
Residential Mortgage-Backed Non-Agency [Member]
Residential Mortgage-Backed Non-Agency [Member]
Investments [Domain]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment Category [Domain]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Liability, Transfers out of Level 3
Transfers out of Level 3, liabilities
Derivative, Gain (Loss) on Derivative, Net
Total
Total
Interest rate swaps
Additional amounts drawn under loan
Additional Amounts Drawn Under Loan
Additional amounts drawn under loan.
Number of Operating Segments
Number of operating segments
Change in Filer Status [Policy Text Block]
Change in filer status.
Change in Filer Status
Segment Reporting Disclosure [Text Block]
Business Segments
Collateralized Mortgage Backed Securities [Member]
Mortgage-backed [Member]
Cash Provided by (Used in) Operating Activity, Continuing Operation [Abstract]
Cash flows from operating activities:
mbi:InvestmentsCarriedAtFairValueMember
Investments Carried At Fair Value [Member]
Schedule of disposal groups including discontinued operations income statement.
Schedule Of Disposal Groups Including Discontinued Operations Income Statement [Table Text Block]
Schedule of Results of Operations from Discontinued Operation
Cash Provided by (Used in) Investing Activity, Continuing Operation [Abstract]
Cash flows from investing activities:
Pledged Status [Domain]
Cash receipts related to recoveries of previously paid claims
Collections For Cases
Collections for Cases
Collections for Cases
New Accounting Pronouncements, Policy [Policy Text Block]
Recently Adopted Accounting Standards
Cash Provided by (Used in) Investing Activity, Discontinued Operation
Proceeds from discontinued operations
Derivative Instruments, Gain (Loss) [Table]
Variable Interest Entity, Initial Consolidation, Gain (Loss)
Net realized gains (losses) related to deconsolidation
Liabilities Of Consolidated Vies [Member]
Liabilities Of Consolidated Vies Member
Insured Financial Obligations with Credit Deterioration, Remaining Weighted Average Contract Period
Remaining weighted average contract period (in years)
Comprehensive Income (Loss) Note [Text Block]
Accumulated Other Comprehensive Income
Other Non-insured [Member]
Other Non-insured [Member]
Other Non-insured.
Disposal group including discontinued operation expenses.
Disposal Group Including Discontinued Operation Expenses [Abstract]
Expenses:
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments, Total
Reinsurance Recoverable for Paid and Unpaid Claims and Claims Adjustments
Reinsurance recoverable on paid and unpaid losses
Reported Value Measurement [Member]
Carrying Reported Amount Fair Value Disclosure [Member]
Investment, Type [Extensible Enumeration]
MBIA Mexico [Member]
MBIA Mexico.
MBIA Mexico [Member]
Payable for Loans Purchased [Member]
Payable for Loans Purchased.
Consolidation [axis].
Consolidation [Axis]
Document Transition Report
Operating Expenses, Total
Operating Expenses
Operating
Number Of Policies
Number Of Policies
Number of policies
Receivable [Domain]
Lessee, Operating Leases [Text Block]
Operating Leases Of Lessee Disclosure
Payments for Repurchase of Common Stock
Purchases of treasury stock
Comprehensive income (loss)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest
Statement of Cash Flows [Abstract]
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due
Loans receivable and other instruments, 90 days or more past due, fair value
Segment benefits losses and expenses.
Segment Benefits Losses And Expenses
Total expenses
Interest Rate Swap [Member]
Interest rate swaps [Member]
Interest Rate Swap [Member]
Accounts and Financing Receivables [Table]
Insured Credit Derivatives [Member]
Insured Credit Derivatives [Member]
Insured credit derivatives.
Earnings Per Share [Text Block]
Earnings Per Share
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Ending balance, fair value assets
Beginning balance, fair value assets
Fair Value, assets
Investment [Table Text Block]
Amortized Cost And Fair Value Of Available-For-Sale And Held-To-Maturity Investment Portfolios
Net Income (Loss) Attributable to Parent, Total
Net income (loss) attributable to MBIA Inc.
Classified List [Member]
Classified List Member
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest
Less: Net income (loss) from continuing operations attributable to noncontrolling interests
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables
Loans receivable and other instruments, difference
Fair Value By Consolidated Statements Of Operations [Axis]
Fair Value By Consolidated Statements Of Operations Axis
Assets [Abstract]
Assets
Cash Provided by (Used in) Operating Activity, Discontinued Operation
Cash (used) by discontinued operations
MBIA Corp [Member]
Mbia Corp [Member]
MBIA Corp [Member]
Document Fiscal Year Focus
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Changes In The Components Of AOCI
Other Assets [Member]
Other [Member]
Other assets [Member]
Borrowings under Guaranteed Investment Agreements
Investment agreements
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]
Gains And Losses (Realized And Unrealized) Included In Earnings Pertaining To Level 3 Assets And Liabilities
Interest rate derivatives [Member]
Non-insured Interest Rate Derivatives [Member]
Interest Rate Derivatives [Member]
Interest Rate Derivatives Member
Disclosure - Income Taxes (Income Taxes And Related Effective Tax Rates) [Abstract]
Disclosure Income Taxes Income Taxes And Related Effective Tax Rates [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks [Table]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases
Purchases, liabilities
Currency Swap [Member]
Cross Currency Swap [Member]
Currency swaps-VIE
Schedule of Insured Financial Obligations with Credit Deterioration, Reductions of Gross Claim Liability, Gross Potential Recoveries
Less: Gross potential recoveries
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture
Share-based compensation
Loss And Loss Adjustment Expense Reserves [Member]
Loss and loss adjustment expense reserves [Member]
Loss And Loss Adjustment Expense Reserves Member
Increase (Decrease) in Unearned Premiums
Unearned premium revenue
Changes in unearned premium revenue
Changes in unearned premium revenue
Unrealized Gain (Loss) on Investments [Table Text Block]
Portion Of Unrealized Gains Losses Recognized On Equity Investments
This element represents the fair value measurement range percentage of the Company's assets and liabilities measured at fair value.
Fair Value Measurement Range Percentage
Range percentage
Net realized investment gains losses.
Net Realized Investment Gains Losses
Net realized investment gains (losses)
Fixed Maturities [Member]
Equity and trading securities
Equity and Trading securities [Member]
Equity and Trading securities [Member]
Proceeds from recoveries and reinsurance, net of salvage paid to reinsurers.
Proceeds From Recoveries And Reinsurance Net Of Salvage Paid To Reinsurers
Proceeds from recoveries and reinsurance, net of salvage paid to reinsurers
Net Investment Income, Total
Net Investment Income
Net investment income
Other Liabilities, Total
Other Liabilities
Other liabilities
Asset, Held-for-Sale, Not Part of Disposal Group, Total
Assets Held-for-sale, Not Part of Disposal Group
Assets held for sale
Commitments and Contingencies [Abstract]
Insurance Loss Recoverable And Changes In Recoveries Of Unpaid Losses Change In Assumptions
Insurance Loss Recoverable And Changes In Recoveries Of Unpaid Losses Change In Assumptions
Changes in Assumptions
Embedded Derivative, Fair Value of Embedded Derivative Liability
Embedded derivative liabilities
Disposal Group, Including Discontinued Operation, Interest Expense
Interest
Net Income (Loss) Available to Common Stockholders, Basic, Total
Net Income (Loss) Available to Common Stockholders, Basic
Net income (loss) from continuing operations available to common shareholders - Basic
Net income (loss) from continuing operations available to common shareholders
Disposal Group, Including Discontinued Operation, Liabilities
Total liabilities held for sale
Liabilities held for sale
Fair Value, Option, Loans Held as Assets, 90 Days or More Past Due, Aggregate Difference
Loans receivable and other instruments, 90 days or more past due, difference
Preferred Stock Of Subsidiary And Noncontrolling Interests [Member]
Preferred stock of subsidiary and noncontrolling interests [Member]
Preferred stock of subsidiary and noncontrolling interests.
Derivative Instrument [Axis]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales
Sales, liabilities
Sales, liabilities
Realized (gains)/losses, liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Realized Gain (Loss) Included in Earnings
Amount of realized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).
Debt Securities, Available-for-sale [Abstract]
Available For Sale Securities [Abstract]
Available For Sale Securities [Abstract]
Total assets
Assets, Fair Value Disclosure, Total
Assets, Fair Value Disclosure
Fair value financial assets measured on recurring basis
Corporate Operations [Member]
Corporate Operations [Member]
Available For Sale Securities And Held To Maturity Securities [Line Items]
Available For Sale Securities And Held To Maturity Securities Line Items
Identifiable assets per segment.
Identifiable Assets Per Segment
Identifiable assets per segment
Debt Instrument, Fair Value Disclosure, Total
Debt Instrument, Fair Value Disclosure
Variable interest entity debt (includes financial instruments carried at fair value)
Loan Repurchase Commitments [Member]
Loan Repurchase Commitments.
Schedule of Insured Financial Obligations with Credit Deterioration, Insured Contractual Payments Outstanding
Total
Revenues
Total revenues
Total revenues
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash provided (used) by investing activities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3
Transfers into level 3, assets
Title of 12(b) Security
Schedule of Segment Reporting Information, by Segment [Table]
Investment Income, Net
Investment Income, Net, Total
Net investment income
Available for sale securities short term investment.
Available For Sale Securities Short Term Investment
Short-term investments, at fair value (amortized cost $363 and $409)
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Derivative Instruments
Income Taxes
Income Tax Disclosure [Text Block]
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Total
Debt Securities, Available-for-sale, Allowance for Credit Loss
Ending balance
Beginning Balance
Allowance for Credit Losess
Consolidation [domain].
Consolidation [Domain]
Structured Finance And International Insurance
Structured Finance And International Insurance [Member]
Structured Finance and International Insurance [Member]
Liabilities Held for Sale [Member]
Liabilities Held for Sale [Member]
Liabilities Held for Sale.
Financial Guarantee Insurance Contracts, Claim Liability, Significant Components of Change, Effect of Change in Discount Rate
Changes in discount rates
EBITDA multiples Discount rate Hard asset values type certificate values..
EBITDA Multiples Discount Rate Hard Asset Values Type Certificate Values [Member]
Consolidated Entities [Axis]
Legal Entity [Axis]
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Change in:
Disposal group including discontinued operation loss on disposal group current.
DisposalGroupIncludingDiscontinuedOperationLossOnDisposalGroupCurrent
Loss on disposal group
Income Tax Disclosure [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Unrecognized Tax Benefits, Ending Balance
Unrecognized Tax Benefits, Beginning Balance
Unrecognized Tax Benefits
Unrecognized Tax Benefits
Additional Paid-in Capital [Member]
Additional Paid-in Capital [Member]
Amounts drawn under loan.
Amounts Drawn Under Loan
Amounts drawn under loan
Commercial mortgage backed Securities [Member]
Commercial Mortgage Backed Securities [Member]
Commercial Mortgage-Backed [Member]
Foreign Exchange Recognized in OCI or Earnings, liabilities
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Foreign Exchange Recognized in Other Comprehensive Income (Loss) or Earnings
Amount of foreign exchange recognized in other comprehensive income (OCI) or earnings from liability measured at fair value on recurring basis using unobservable input (level 3).
Fair Value, Measurement Frequency [Domain]
Statement of Income Location, Balance [Axis]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Trading Symbol
mbi:FixedMaturitySecuritiesHeldAtFairValueVieMember
Fixed Maturity Securities Held At Fair Value Vie [Member]
Fixed Maturity Securities Held At Fair Value - VIE [Member]
Net income loss attributable to parent net of tax.
Net Income Loss Attributable To Parent Net Of Tax
Net income (loss) attributable to MBIA Inc.
Subsequent Event Type [Axis]
Schedule of disposal groups including discontinued operations balance sheet.
Schedule Of Disposal Groups Including Discontinued Operations Balance Sheet [Table Text Block]
Schedule of Discontinued Operations Components of Assets and Liabilities Held for Sale
Fair Value Measurements Recurring [Member]
Revenues of consolidated VIEs
Change in the fair value of and realized gains and losses on sale of financial instruments and foreign exchange included in earnings.
Net gains (losses) on financial instruments at fair value and foreign exchange
Net gains (losses) on financial instruments at fair value and foreign exchange
Corporate Asset Backed Member
Corporate Asset Backed [Member]
Corporate Asset Backed [Member]
Outstanding Bonds
Amount of outstanding bonds for a specific issuer
Outstanding bonds
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment
Sales, paydowns, maturities and other proceeds of investments at fair value
Equity Components [Axis]
Discounted Cash Flow Sum of the Parts [Member]
Discounted Cash Flow Sum Of The Parts [Member]
Discounted cash flow sum of the parts.
Equity Component [Domain]
Asset Class [Axis]
Deferred Policy Acquisition Cost, Ending Balance
Deferred Policy Acquisition Cost, Beginning Balance
Deferred Policy Acquisition Costs
Deferred acquisition costs
Schedule of Realized Gain (Loss) [Table Text Block]
Gross Realized Gains and Losses From Sales Of Available-For-Sale Securities
Investments
Total investments
Other Comprehensive Income Location [Domain]
Other Comprehensive Income Location [Axis]
Trading Activity, by Type [Domain]
Customer [Axis]
U.S. Treasury and government agency [Member]
US Treasury and Government [Member]
U.S. Treasury And Government Agency [Member]
Statement of Comprehensive Income [Abstract]
Statements of Comprehensive Income (Loss)
Debt Securities, Available-for-sale, Allowance for Credit Loss [Table Text Block]
Summary of Allowance for Credit Losses on AFS Investments
Financial Guarantee Insurance Contracts, Accelerated Premium Revenue, Amount
Refunding premiums earned
Maximum [Member]
Maximum [Member]
Financial and Nonfinancial Liabilities, Fair Value Disclosure
Fair value financial liabilities measured on recurring basis
Total liabilities
Range [Axis]
Proceeds from Interest and Dividends Received, Total
Proceeds from Interest and Dividends Received
Investment income received
Common Stock, Value, Issued
Common stock, par value $1 per share; authorized shares--400,000,000; issued shares--283,186,115
Noncontrolling Interest, Amount Represented by Preferred Stock
Preferred stock of subsidiary and noncontrolling interests
Premiums receivable (net of allowance for credit losses)
Premium Receivable, Allowance for Credit Loss, Ending Balance
Premium Receivable, Allowance for Credit Loss, Beginning Balance
Premium Receivable, Allowance for Credit Loss
Global Public Finance [Member]
Global Public Finance [Member]
Global Public Finance [Member]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Reclassifications From AOCI
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest
Total equity balance
Total equity balance
Total equity
Loss And Loss Adjustment Expense Reserves [Line Items]
Loss And Loss Adjustment Expense Reserves [Line Items]
Loss And Loss Adjustment Expense Reserves [Line Items]
Loss And Lae Reserves [Member]
Loss And Lae Reserves [Member]
Loss And Lae Reserves Member
Gross realized gains
Debt Securities, Available-for-Sale, Realized Gain
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Other comprehensive income (loss):
Income (Loss) from Continuing Operations, Per Diluted Share
Continuing operations - Diluted
Continuing operations - diluted
Premiums Receivable, Net, Total
Premiums Receivable, Net
Premiums receivable (net of allowance for credit losses of $- and $- )
Benefits, Losses and Expenses
Total expenses
Disclosure Earnings Per Share Schedule Of Basic And Diluted Earnings Per Share [Table]
Disclosure earnings per share schedule of basic and diluted earnings per share table.
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fair Value Off Balance Sheet Risks Disclosure Information [Line Items]
Preferred Stock, Shares Authorized
Preferred stock, authorized shares
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Total
Less: Comprehensive income (loss) attributable to noncontrolling interests
Premiums Earned, Net
Premiums earned (net of ceded premiums of $-, $-, $-, and $-)
Premiums earned (net of ceded premiums of $-, and $-)
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss, Total
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss
Tota, unrealized losses
Mbia Inc [Member]
MBIA Inc. [Member]
MBIA Inc.
Underlying Asset Class [Axis]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Notes And Loans Receivable [Line Items]
Accounts Notes And Loans Receivable [Line Items]
Held [Member]
Unrealized gains (losses) recognized during the period on equity and trading securities still held at the reporting date [Member]
Held Member
Business Combination [Table]
Entity Registrant Name
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax
Gross unrealized losses
Treasury Stock, Shares, Acquired
Treasury shares acquired under share repurchase program (in shares)
Additional Paid in Capital, Total
Additional Paid in Capital
Additional paid-in capital
Accumulated Other Comprehensive Income (Loss) [Table]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Schedule Of Summary Of Nonconsolidated VIEs Assets And Liabilities [Text Block]
Schedule Of Summary Of Non consolidated Vies Assets And Liabilities [Table Text Block]
Summary of Nonconsolidated VIEs Assets and Liabilities
Consolidated Entities [Domain]
Income Tax Expense (Benefit), Total
Income Tax Expense (Benefit)
Provision (benefit) for income taxes
Measurement Frequency [Axis]
Sales [Member]
Net gains (losses) recognized during the period on equity and trading securities sold during the period [Member]
Other investments at amortized cost
Other Investments
Other Investments, Total
Corporate Loans Receivable [Member]
Corporate Loans Receivable [Member]
Corporate Loans Receivable.
CommitmentsAndContingenciesDisclosureAbstract
Commitments And Contingencies [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Settlements, assets
Settlements, assets
Interest Derivatives [Member]
Interest Derivatives [Member]
Interest Derivatives.
Loans Receivable at Fair Value [Member]
Loans Receivable at Fair Value [Member]
Loans Receivable at Fair Value.
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Quantitative Information Regarding The Significant Unobservable Inputs For Certain Assets Measured At Fair Value On A Recurring Basis
Entity Common Stock, Shares Outstanding
US States and Political Subdivisions Debt Securities [Member]
State and municipal bonds [Member]
US States And Political Subdivisions [Member]
Liability Class [Axis]
Change in unrealized gains/(losses) for the period included in OCI for Assets still held, assets
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI
Corporate Loans [Member]
Corporate loans.
Corporate Loans - Current [Member]
Stockholders' Equity, Period Increase (Decrease), Total
Stockholders' Equity, Period Increase (Decrease)
Period change
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Ending balance
Beginning balance
Gain (loss) on cumulative changes in instrument-specific credit risk of liabilities elected under the fair value option
Accumulated other comprehensive income (loss), net of tax of $7 and $7
Increase decrease in net gains losses on financial instruments at fair value and foreign exchange.
Increase Decrease In Net Gains Losses On Financial Instruments At Fair Value And Foreign Exchange
Net (gains) losses on financial instruments at fair value and foreign exchange
Consolidation Items [Axis]
Payment for (Proceeds from) Other Investing Activity
Other investing
Surveillance Categories [Axis]
Surveillance Categories Axis
Payments for (Proceeds from) Short-Term Investments, Total
Payments for (Proceeds from) Short-term Investments
Sales, paydowns and maturities (purchases) of short-term investments, net
Assets
Total identifiable assets
Total assets
Carrying Value of VIE Assets
Percentage Of Fair Value Below Book Value Minimum
Percentage Of Fair Value Below Book Value Minimum
Income Statement [Abstract]
Weighted Average [Member]
Correction of error income (loss) from discontinued operations, net of tax.
Correction Of Error Income (Loss) From Discontinued Operations, Net Of Tax
Correction of error income (loss) from discontinued operations, net of tax
Impact Of Financial Guarantee [Member]
Impact Of Financial Guarantee Member
Gain (Loss) on Investments [Member]
Net gains (losses) recognized during the period on equity and trading securities [Member]
Unearned Premiums
Unearned premium revenue
Business Combination [Abstract]
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
Net income (loss) per common share attributable to MBIA Inc. - diluted
Net income (loss) per share attributable to MBIA Inc. - diluted
Foreign tax credit
Deferred Tax Assets, Tax Credit Carryforwards, Foreign
Operating Segments [Member]
Operating Segments [Member]
Derivative Liabilities [Member]
Derivative liabilities [Member]
Derivative Liabilities Member
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value
Mortgage-backed and asset-backed
Assets of Consolidated VIEs [Member]
Assets Of Consolidated VIEs [Member]
Assets Of Consolidated V I Es [Member]
Disposal Group, Including Discontinued Operation, Assets
Assets held for sale
Total assets held for sale
City Area Code
Fair Value Option, Disclosures [Table Text Block]
Changes In Fair Value Included In The Company's Consolidated Statements Of Operations
Trading Activity [Axis]
Discontinued Operation, Tax Effect of Discontinued Operation
Provision (benefit) for income taxes from discontinued operations
Disclosure Earnings Per Share Schedule Of Basic And Diluted Earnings Per Share [Line Items]
Disclosure earnings per share schedule of basic and diluted earnings per share.
Total expenses of all Variable Interest Entities consolidated by the reporting entity
Expenses Of Consolidated Vies
Expenses of consolidated VIEs
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest
Income (loss) from discontinued operations, net of income taxes
Income (loss) from discontinued operations, net of income taxes
Net income (loss) from discontinued operations attributable to MBIA Inc.
Income (loss) from discontinued operations, net of income taxes
Business Combination [Line Items]
Business Acquisition [Line Items]
Corporate Obligations [Member]
Corporate Obligation [Member]
Corporate Obligations [Member]
Variable Interest Entity, Not Primary Beneficiary [Member]
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss)
Change in unrealized gains/(losses) for the period included in earnings for liabilities still held, liabilities
Change in unrealized gains/(losses) for the period included in earnings for liabilities still held, liabilities
Antidilutive Shares [Abstract]
Antidilutive Shares Abstract
Counterparty Name [Domain]
Securities Sold, Not yet Purchased [Member]
Capital Returned By Subsidiary
Capital returned by subsidiary.
Capital returned by subsidiary
Amortized cost of short-term investments
Short Term Investments Amortized Cost
Short-term investments, amortized cost
Foreign Government Debt [Member]
Foreign Government Debt [Member]
Foreign Governments [Member]
Discount rate EBITDA multiple EBITDA royalty share.
Discount Rate EBITDA Multiple EBITDA Royalty Share [Member]
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Fair Value Option Aggregate Fair Value Long Term Debt Instruments
Fair Value Option Aggregate Fair Value Long Term Debt Instruments
Long-term debt instruments, fair value
Segment Reporting Information [Line Items]
Disposal group including discontinued operations total expenses from discontinued operations.
Disposal Group Including Discontinued Operations Total Expenses From Discontinued Operations
Total expenses from discontinued operations
Disclosure of Credit Derivatives [Table Text Block]
Credit Derivatives Sold
Investments [Abstract]
Investments [Abstract]
Investments:
Proceeds from Insurance Premiums Collected
Premiums, fees and reimbursements received
Retained Earnings [Member]
Retained Earnings (Deficit) [Member]
Schedule of Fair Value of Separate Accounts by Major Category of Investment [Line Items]
Schedule Of Fair Value Of Separate Accounts By Major Category Of Investment [Line Items]
Compensation and benefits
Employee Benefits and Share-Based Compensation
Represents the Company's balance sheet carrying amount of the financial guarantee insurance contracts ceded to third party reinsurers. The balance sheet carrying amount comprises the prepaid reinsurance premiums and reinsurance recoverable on paid and unpaid losses
Financial Guarantee Ceded
Ceded recoverable (liability)
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months
Less than 12 months, fair value
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after Five Through Ten Years, Fair Value
Due after five years through ten years
Fair Value, Inputs, Level 1 [Member]
Fair Value Inputs Level 1 [Member]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash provided (used) by financing activities
Notes Payable, Total
Notes Payable
Variable interest entity loans payable
Variable interest entity debt (includes financial instruments carried at fair value of $24 and $25)
Collateral [Domain]
Fair Value, Asset, Recurring Basis, Still Held, Unrealized Gain (Loss)
Change in unrealized gains/(losses) for the period included in earnings for assets still held, assets
Investments [Member]
Investments [Member]
Losses and loss adjustment.
Losses and loss adjustment
Losses and loss adjustment
Total assets per reportable segment
Assets per reportable segment
Assets per reportable segment.
Percentage Of Fair Value Below Book Value Maximum
Percentage Of Fair Value Below Book Value Maximum
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales
Sales, assets
Sales, assets
Marketable Securities [Table Text Block]
Investments
Derivative Contract [Domain]
Fully Drawn [Member]
Fully drawn.
Corporate Debt Securities [Member]
Corporate Obligations [Member]
Corporate Obligations [Member]
CommitmentsAndContingenciesDisclosure
Commitments And Contingencies [Table]
Entity Interactive Data Current
Statement of Income Location, Balance [Domain]
Fair Value Measurement [Domain]
Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, after Tax and Reclassification Adjustment, Attributable to Parent [Abstract]
Instrument-specific credit risk of liabilities measured at fair value:
Distribution Of Securities By Percentage Of Fair Value Below Book Value By More Than 5%.
Investments Distribution Of Securities By Percentage Of Fair Value Below Book Value By More Than Five Percent [Table Text Block]
Distribution Of Securities By Percentage Of Fair Value Below Book Value By More Than 5%
Schedule of Basic and Diluted Earnings Per Share [Table Text Block]
Schedule Of Basic And Diluted Earnings Per Share [Table Text Block]
Schedule Of Basic And Diluted Earnings Per Share
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
Recent Accounting Pronouncements
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)
Total revenues from discontinued operations
Disposal Group, Including Discontinued Operation, Accounts Payable
Accounts payable
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Total (gains)/losses included in earnings, liabilities
Total (gains)/losses included in earnings, liabilities
Entity Tax Identification Number
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Equity:
Revenues [Abstract]
Revenues:
Other Investments [Member]
Other Investments [Member]
Disposal Group, Including Discontinued Operation, Goodwill
Goodwill
Fair Value, Liability, Recurring Basis, Still Held, Unrealized Gain (Loss), OCI
Change in Unrealized Gains/ (Losses) for the Period Included in OCI for Liabilities still held
Paydowns, maturities and other proceeds of available-for-sale investments
Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-sale
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Total gains/(losses) included in earnings, assets
Foreign currency translation:
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax [Abstract]
Schedule of Insured Financial Obligations with Credit Deterioration, Insured Contractual Payments Outstanding, Interest
Interest
Local Phone Number
Lae [Member]
Lae [Member]
Lae Member
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling after One Through Five Years, Fair Value
Due after one year through five years
Accumulated Other Comprehensive Income (Loss) [Line Items]
Event Domain.
Event [Domain]
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average number of common shares outstanding:
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Fair Value
Due in one year or less
Other investments
Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure
Investment Notes [Axis]
Investment Notes [Axis]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax
Other comprehensive income (loss) before reclassifications
Unrealized Loss Position Greater Than Twelve Months [Member]
Unrealized loss position > 12 months [Member]
Unrealized Loss Position Greater Than Twelve Months Member
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Rolling within One Year, Amortized Cost
Due in one year or less
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Unrealized gains (losses) on AFS, net [Member]
Residential Portfolio Segment [Member]
Loans receivable - residential [Member]
Residential Loans Receivable [Member]
Other material legal proceedings pending
Number Of Other Legal Proceedings
Other material legal proceedings pending.
Cash and Cash Equivalents [Member]
Increase decrease in carrying amount as of the balance sheet date of amounts expected to be recovered under the terms of insurance contracts related to recoveries related to commitments to repurchase ineligible loans within an (issue) and recoveries expected on paid claims.
Increase Decrease In Insurance Loss Recoverable
Insurance loss recoverable
Class of Stock [Domain]
Unrealized gains/(losses) included in earnings, assets
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Unrealized Gain (Loss) Included in Earnings
Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).
Insurance Loss Recoverable [Member]
Insurance Loss Recoverable [Member]
Insurance Loss Recoverable [Member]
Insurance Loss Recoverable Member
Gains (losses) on the consolidation and deconsolidation
Gains Losses On The Consolidation And Deconsolidation
Gains losses on the consolidation and deconsolidation.
Entity Emerging Growth Company
Disclosed At Fair Value Not Recorded At Fair Value [Domain]
Disclosed At Fair Value Not Recorded At Fair Value Domain