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Loss And Loss Adjustment Expense Reserves (Schedule Of Financial Guarantees And Related Claim Liability) (Detail) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) issue policy | Dec. 31, 2021 USD ($) issue policy
Loss And Loss Adjustment Expense Reserves [Line Items] |  |  |
Number of policies | policy |  | 232 | 260
Number of issues | issue | [1] | 105 | 106
Remaining weighted average contract period (in years) |  | 7 years 7 months 6 days | 7 years 4 months 24 days
Principal | [2] | $ 3,652 | $ 4,091
Interest | [2] | 2,879 | 3,082
Total | [2] | 6,531 | 7,173
Gross claim liability | [3] | 1,118 | 1,051
Less: Gross potential recoveries | [4] | 421 | 1,498
Discount, net | [5] | 187 | (32)
Net claim liability (recoverable) |  | 510 | (415)
Unearned premium revenue |  | 33 | 37
Reinsurance recoverable on paid and unpaid losses | [6] | $ 14 | $ 7
Caution List Low [Member] |  |  |
Loss And Loss Adjustment Expense Reserves [Line Items] |  |  |
Number of policies | policy |  | 55 | 55
Number of issues | issue | [1] | 16 | 16
Remaining weighted average contract period (in years) |  | 6 years | 6 years 1 month 6 days
Principal | [2] | $ 1,325 | $ 1,366
Interest | [2] | 1,825 | 1,867
Total | [2] | 3,150 | 3,233
Gross claim liability | [3] | 0 | 0
Less: Gross potential recoveries | [4] | 0 | 0
Discount, net | [5] | 0 | 0
Net claim liability (recoverable) |  | 0 | 0
Unearned premium revenue |  | $ 8 | $ 8
Caution List Medium [Member] |  |  |
Loss And Loss Adjustment Expense Reserves [Line Items] |  |  |
Number of policies | policy |  | 3 | 3
Number of issues | issue | [1] | 2 | 2
Remaining weighted average contract period (in years) |  | 2 years 3 months 18 days | 2 years 7 months 6 days
Principal | [2] | $ 6 | $ 6
Interest | [2] | 1 | 1
Total | [2] | 7 | 7
Gross claim liability | [3] | 0 | 0
Less: Gross potential recoveries | [4] | 0 | 0
Discount, net | [5] | 0 | 0
Net claim liability (recoverable) |  | 0 | 0
Unearned premium revenue |  | $ 0 | $ 0
Caution List High [Member] |  |  |
Loss And Loss Adjustment Expense Reserves [Line Items] |  |  |
Number of policies | policy |  | 0 | 0
Number of issues | issue | [1] | 0 | 0
Principal | [2] | $ 0 | $ 0
Interest | [2] | 0 | 0
Total | [2] | 0 | 0
Gross claim liability | [3] | 0 | 0
Less: Gross potential recoveries | [4] | 0 | 0
Discount, net | [5] | 0 | 0
Net claim liability (recoverable) |  | 0 | 0
Unearned premium revenue |  | $ 0 | $ 0
Classified List [Member] |  |  |
Loss And Loss Adjustment Expense Reserves [Line Items] |  |  |
Number of policies | policy |  | 174 | 202
Number of issues | issue | [1] | 87 | 88
Remaining weighted average contract period (in years) |  | 8 years 6 months | 8 years 1 month 6 days
Principal | [2] | $ 2,321 | $ 2,719
Interest | [2] | 1,053 | 1,214
Total | [2] | 3,374 | 3,933
Gross claim liability | [3] | 1,118 | 1,051
Less: Gross potential recoveries | [4] | 421 | 1,498
Discount, net | [5] | 187 | (32)
Net claim liability (recoverable) |  | 510 | (415)
Unearned premium revenue |  | $ 25 | $ 29
[1] | An “issue” represents the aggregate of financial guarantee policies that share the same revenue source for purposes of making debt service payments on the insured debt.
[2] | Represents contractual principal and interest payments due by the issuer of the obligations insured by MBIA.
[3] | The gross claim liability with respect to Puerto Rico exposures are net of expected recoveries for policies in a net payable position.
[4] | Gross potential recoveries with respect to certain Puerto Rico exposures are net of the claim liability for policies in a net recoverable position.
[5] | Represents discount related to Gross Claim Liability and Gross Potential Recoveries.
[6] | Included in “Other assets” on the Company’s consolidated balance sheets.

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- Definition Number Of Policies + References No definition available. + Details
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- Definition Schedule of insured financial obligations with credit deterioration net claim liability recoverable. + References No definition available. + Details
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- Definition Remaining weighted average contract period of financial guarantee insurance contracts, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(ii) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 + Details
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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, policy benefits and policy reserves. Excludes premiums paid under reinsurance contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=99404803&loc=d3e21412-158489 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 310 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=99404803&loc=d3e21409-158489 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 20 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=99397103&loc=d3e6824-158387 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 825 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123600520&loc=SL75241803-196195 + Details
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- Definition This element represents the gross claim liability for financial guarantee insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(iv) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the amount of insured contractual payments outstanding on the underlying insured obligations for financial guarantee insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(iii) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the amount of insured contractual payments outstanding attributable to interest accrued on the underlying insured obligations for financial guarantee insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(iii) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the amount of insured contractual payments outstanding attributable to the principal of the underlying insured obligations for financial guarantee insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(iii) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the number of issued and outstanding contracts for each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(i) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the gross potential recoveries against the gross claim liability for financial guarantee insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(v) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the net discount consisting of the difference between the discount related to the claim liability for and potential recoveries thereof related to financial guarantee insurance contracts presented in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(vi) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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- Definition This element represents the amount of unearned premium revenue, reported on or included in the statement of financial position, related to financial guarantee insurance contracts and presented in the schedule of insured financial obligations with credit deterioration in the context of each surveillance grouping or category used by management to monitor and track potential deterioration in the credit worthiness of the insured party's ability to meet its financial obligations related to the contracts underlying financial guarantee insurance contracts the entity has issued. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 9 -Subparagraph (a)(5)(ix) -URI http://asc.fasb.org/extlink&oid=99382878&loc=SL5749324-161292 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 55 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=99379334&loc=SL5751133-161288 + Details
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