XML 96 R37.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Variable Interest Entities (Summary Of Nonconsolidated VIEs Assets And Liabilities) (Detail) (USD $) In Millions, unless otherwise specified | Jun. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Collateralized Debt Obligations [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | $ 12,688 |  | $ 16,925 |
Maximum Exposure to Loss | 8,769 |  | 10,873 |
Investments |  |  | 0 | [1]
Premiums receivable | 57 | [2] | 62 | [2]
Insurance loss recoverable | 5 | [3] | 5 | [3]
Unearned premium revenue | 50 | [4] | 55 | [4]
Loss and loss adjustment expense reserves | 16 | [5] | 37 | [5]
Derivative liabilities | 95 | [6] | 74 | [6]
Residential Mortgage Backed Securities [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 23,812 |  | 34,061 |
Maximum Exposure to Loss | 10,294 |  | 13,075 |
Investments |  |  | 11 | [1]
Premiums receivable | 59 | [2] | 77 | [2]
Insurance loss recoverable | 700 | [3] | 3,278 | [3]
Unearned premium revenue | 57 | [4] | 75 | [4]
Loss and loss adjustment expense reserves | 351 | [5] | 440 | [5]
Derivative liabilities | 6 | [6] | 4 | [6]
Commercial Mortgage Backed Securities [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 4,628 |  | 4,801 |
Maximum Exposure to Loss | 2,284 |  | 2,432 |
Investments |  |  | 0 | [1]
Premiums receivable | 1 | [2] | 2 | [2]
Insurance loss recoverable | 0 | [3] | 0 | [3]
Unearned premium revenue | 1 | [4] | 2 | [4]
Loss and loss adjustment expense reserves | 0 | [5] | 0 | [5]
Derivative liabilities | 0 | [6] | 0 | [6]
Consumer Asset Backed [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 5,404 |  | 5,820 |
Maximum Exposure to Loss | 2,878 |  | 3,086 |
Investments |  |  | 10 | [1]
Premiums receivable | 17 | [2] | 19 | [2]
Insurance loss recoverable | 0 | [3] | 0 | [3]
Unearned premium revenue | 17 | [4] | 19 | [4]
Loss and loss adjustment expense reserves | 19 | [5] | 21 | [5]
Derivative liabilities | 0 | [6] | 0 | [6]
Corporate Asset Backed [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 15,717 |  | 19,980 |
Maximum Exposure to Loss | 8,914 |  | 9,981 |
Investments |  |  | 0 | [1]
Premiums receivable | 102 | [2] | 123 | [2]
Insurance loss recoverable | 19 | [3] | 13 | [3]
Unearned premium revenue | 119 | [4] | 140 | [4]
Loss and loss adjustment expense reserves | 0 | [5] | 0 | [5]
Derivative liabilities | 0 | [6] | 0 | [6]
Global Structured Finance [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 62,249 |  | 81,587 |
Maximum Exposure to Loss | 33,139 |  | 39,447 |
Investments |  |  | 21 | [1]
Premiums receivable | 236 | [2] | 283 | [2]
Insurance loss recoverable | 724 | [3] | 3,296 | [3]
Unearned premium revenue | 244 | [4] | 291 | [4]
Loss and loss adjustment expense reserves | 386 | [5] | 498 | [5]
Derivative liabilities | 101 | [6] | 78 | [6]
Global Public Finance [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 44,456 |  | 39,259 |
Maximum Exposure to Loss | 19,353 |  | 21,346 |
Investments |  |  | 0 | [1]
Premiums receivable | 197 | [2] | 220 | [2]
Insurance loss recoverable | 0 | [3] | 0 | [3]
Unearned premium revenue | 242 | [4] | 267 | [4]
Loss and loss adjustment expense reserves | 5 | [5] | 4 | [5]
Derivative liabilities | 0 | [6] | 0 | [6]
Total Insurance [Member] |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |
VIE Assets | 106,705 |  | 120,846 |
Maximum Exposure to Loss | 52,492 |  | 60,793 |
Investments |  |  | 21 | [1]
Premiums receivable | 433 | [2] | 503 | [2]
Insurance loss recoverable | 724 | [3] | 3,296 | [3]
Unearned premium revenue | 486 | [4] | 558 | [4]
Loss and loss adjustment expense reserves | 391 | [5] | 502 | [5]
Derivative liabilities | $ 101 | [6] | $ 78 | [6]
[1] | Reported within "Investments" on MBIA's consolidated balance sheets.
[2] | Reported within "Premiums receivable" on MBIA's consolidated balance sheets.
[3] | Reported within "Insurance loss recoverable" on MBIA's consolidated balance sheets.
[4] | Reported within "Unearned premium revenue" on MBIA's consolidated balance sheets.
[5] | Reported within "Loss and loss adjustment expense reserves" on MBIA's consolidated balance sheets.
[6] | Reported within "Derivative liabilities" on MBIA's consolidated balance sheets.

X
- Definition Carrying amount as of the balance sheet date of paid insurance policy claims and LAE expense expected to be recovered. + References No definition available. + Details
Name: | mbi_InsuranceLossRecoverable
Namespace Prefix: | mbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13495-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FIN39-1 -Paragraph 10A, 10B -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 133 -Paragraph 4, 17 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Sum of the carrying amounts as of the balance sheet date of all investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(h)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph h -Article 7 + Details
Name: | us-gaap_Investments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The carrying amount as of the balance sheet date due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, net of the allowance for doubtful accounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),5) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 7 + Details
Name: | us-gaap_PremiumsReceivableAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Alternate concept name for the aggregate amount of policy reserves (provided for future obligations including unpaid claims and claims adjustment expenses) and policy benefits (liability for future policy benefits) as of the balance sheet date; grouped amount of all the liabilities associated with the company's insurance policies. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6482485&loc=d3e14764-158437 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph a -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-5 -Paragraph 11 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.13(a)(1)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_ReserveForLossesAndLossAdjustmentExpenses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of premiums written on insurance contracts that have not been earned as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 16 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 60 -Paragraph 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),13(a)(2)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 97 -Paragraph 16, 17, 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Subparagraph a(2) -Article 7 + Details
Name: | us-gaap_UnearnedPremiums
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5747-111685 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS140-4/FIN46(R) -Paragraph C6 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=7880789&loc=d3e5728-111685 + Details
Name: | us-gaap_VariableInterestEntityNonconsolidatedCarryingAmountAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant