XML 156 R74.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value Of Financial Instruments (Changes In Level 3 Assets And Liabilities Measured At Fair Value On Recurring Basis) (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Variable Interest Entity [Member] | Loans Receivable [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Ending Balance, Fair Value Assets | $ 1,881 |  |  |
Variable Interest Entity [Member] | Loan Repurchase Commitments [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Ending Balance, Fair Value Assets | 1,086 |  |  |
Significant Unobservable Inputs (Level 3) [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 4,188 |  | 4,467 |
Realized Gains / (Losses), Assets | (71) |  | (73) |
Unrealized Gains / (Losses) Included in Earnings, Assets | 106 |  | 316 |
Unrealized Gains / (Losses) Included in OCI, Assets | 123 |  | 56 |
Foreign Exchange Recognized in OCI or Earnings, Assets | 1 |  | 5 |
Purchases, Assets | 74 |  | 167 |
Issuances, Assets |  |  | 15 |
Settlements, Assets | (438) |  | (632) |
Sales, Assets | (582) |  | (189) |
Transfers into Level 3, Assets | 288 | [1] | 447 | [1]
Transfers out of Level 3, Assets | (157) | [1] | (391) | [1]
Ending Balance, Fair Value Assets | 3,532 |  | 4,188 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 151 |  | 364 |
Beginning Balance, Fair Value Liabilities | 7,938 |  | 9,916 |
Realized Gains / (Losses), Liabilities | 464 |  | 2,477 |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | (1,403) |  | 605 |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Foreign Exchange Recognized in OCI or Earnings, Liabilities | 3 |  | (4) |
Purchases, Liabilities |  |  | (8) |
Issuances, Liabilities |  |  |  |
Settlements, Liabilities | (903) |  | (3,056) |
Sales, Liabilities | (1,065) |  | (2,001) |
Transfers into Level 3, Liabilities | 5 | [1] | 9 | [1]
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities | 5,039 |  | 7,938 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities | (499) |  | 2,809 |
Significant Unobservable Inputs (Level 3) [Member] | Variable Interest Entity [Member] | Loans Receivable [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 2,046 |  | 2,183 |
Unrealized Gains / (Losses) Included in Earnings, Assets | 114 |  | 132 |
Purchases, Assets |  |  | 24 |
Settlements, Assets | (277) |  | (291) |
Sales, Assets | (2) |  | (2) |
Ending Balance, Fair Value Assets | 1,881 |  | 2,046 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 114 |  | 132 |
Significant Unobservable Inputs (Level 3) [Member] | Variable Interest Entity [Member] | Loan Repurchase Commitments [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 1,077 |  | 835 |
Unrealized Gains / (Losses) Included in Earnings, Assets | 9 |  | 230 |
Issuances, Assets |  |  | 12 |
Ending Balance, Fair Value Assets | 1,086 |  | 1,077 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 9 |  | 230 |
Significant Unobservable Inputs (Level 3) [Member] | Foreign Governments [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 11 |  | 11 |
Foreign Exchange Recognized in OCI or Earnings, Assets | 1 |  | (7) |
Purchases, Assets | 21 |  | 13 |
Settlements, Assets | (29) |  | (5) |
Sales, Assets | (4) |  | (1) |
Transfers into Level 3, Assets | 3 | [1] | 7 | [1]
Transfers out of Level 3, Assets |  |  | (7) | [1]
Ending Balance, Fair Value Assets | 3 |  | 11 |
Significant Unobservable Inputs (Level 3) [Member] | Corporate Obligations [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 207 |  | 246 |
Realized Gains / (Losses), Assets | (15) |  | (4) |
Unrealized Gains / (Losses) Included in Earnings, Assets | 10 |  |  |
Unrealized Gains / (Losses) Included in OCI, Assets | 27 |  | (8) |
Foreign Exchange Recognized in OCI or Earnings, Assets |  |  | 7 |
Purchases, Assets | 17 |  | 20 |
Settlements, Assets | (29) |  | (127) |
Sales, Assets | (141) |  | (61) |
Transfers into Level 3, Assets | 25 | [1] | 166 | [1]
Transfers out of Level 3, Assets | (25) | [1] | (32) | [1]
Ending Balance, Fair Value Assets | 76 |  | 207 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 9 |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Corporate Obligations [Member] | Variable Interest Entity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 69 |  | 82 |
Unrealized Gains / (Losses) Included in Earnings, Assets | (19) |  | (17) |
Unrealized Gains / (Losses) Included in OCI, Assets | (6) |  |  |
Purchases, Assets | 27 |  |  |
Settlements, Assets | (5) |  | (6) |
Transfers into Level 3, Assets | 15 | [1] | 17 | [1]
Transfers out of Level 3, Assets | (3) | [1] | (7) | [1]
Ending Balance, Fair Value Assets | 78 |  | 69 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 3 |  | (2) |
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Agency [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets |  |  | 41 |
Unrealized Gains / (Losses) Included in OCI, Assets |  |  | 1 |
Purchases, Assets |  |  | 2 |
Settlements, Assets |  |  | (1) |
Sales, Assets |  |  | (2) |
Transfers into Level 3, Assets | 4 | [1] |  |
Transfers out of Level 3, Assets | (4) | [1] | (41) | [1]
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Non-Agency [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 17 |  | 48 |
Realized Gains / (Losses), Assets | (1) |  | (2) |
Unrealized Gains / (Losses) Included in OCI, Assets |  |  | 10 |
Foreign Exchange Recognized in OCI or Earnings, Assets |  |  | 2 |
Purchases, Assets |  |  | 12 |
Settlements, Assets | (13) |  | (22) |
Sales, Assets | (5) |  | (18) |
Transfers into Level 3, Assets | 31 | [1] | 10 | [1]
Transfers out of Level 3, Assets | (25) | [1] | (23) | [1]
Ending Balance, Fair Value Assets | 4 |  | 17 |
Significant Unobservable Inputs (Level 3) [Member] | Residential Mortgage-Backed Non-Agency [Member] | Variable Interest Entity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 21 |  | 40 |
Unrealized Gains / (Losses) Included in Earnings, Assets | 6 |  | (3) |
Unrealized Gains / (Losses) Included in OCI, Assets |  |  | 3 |
Settlements, Assets | (7) |  | (6) |
Sales, Assets | (16) |  | (6) |
Transfers into Level 3, Assets | 6 | [1] | 13 | [1]
Transfers out of Level 3, Assets | (4) | [1] | (20) | [1]
Ending Balance, Fair Value Assets | 6 |  | 21 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 3 |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage-Backed [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 32 |  | 41 |
Realized Gains / (Losses), Assets |  |  | (2) |
Unrealized Gains / (Losses) Included in OCI, Assets | 6 |  |  |
Foreign Exchange Recognized in OCI or Earnings, Assets |  |  | 1 |
Purchases, Assets | 1 |  | 9 |
Settlements, Assets |  |  | (3) |
Sales, Assets |  |  | (21) |
Transfers into Level 3, Assets | 1 | [1] | 8 | [1]
Transfers out of Level 3, Assets | (12) | [1] | (1) | [1]
Ending Balance, Fair Value Assets | 28 |  | 32 |
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage-Backed [Member] | Variable Interest Entity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 22 |  | 23 |
Unrealized Gains / (Losses) Included in Earnings, Assets | 4 |  | 9 |
Settlements, Assets | (4) |  | (2) |
Sales, Assets | (9) |  | (13) |
Transfers into Level 3, Assets | 5 | [1] | 7 | [1]
Transfers out of Level 3, Assets | (11) | [1] | (2) | [1]
Ending Balance, Fair Value Assets | 7 |  | 22 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 1 |  | 3 |
Significant Unobservable Inputs (Level 3) [Member] | Collateralized Debt Obligations [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 60 |  | 192 |
Realized Gains / (Losses), Assets | (9) |  | (4) |
Unrealized Gains / (Losses) Included in OCI, Assets | 20 |  | 25 |
Foreign Exchange Recognized in OCI or Earnings, Assets |  |  | 2 |
Purchases, Assets | 1 |  | 6 |
Issuances, Assets |  |  | 3 |
Settlements, Assets | (15) |  | (114) |
Sales, Assets | (10) |  | (4) |
Transfers into Level 3, Assets | 18 | [1] | 50 | [1]
Transfers out of Level 3, Assets | (34) | [1] | (96) | [1]
Ending Balance, Fair Value Assets | 31 |  | 60 |
Significant Unobservable Inputs (Level 3) [Member] | Collateralized Debt Obligations [Member] | Variable Interest Entity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 203 |  | 245 |
Unrealized Gains / (Losses) Included in Earnings, Assets | (25) |  | (25) |
Unrealized Gains / (Losses) Included in OCI, Assets | 2 |  | (7) |
Purchases, Assets |  |  | 60 |
Settlements, Assets | (12) |  | (7) |
Sales, Assets | (74) |  | (39) |
Transfers into Level 3, Assets | 56 | [1] | 71 | [1]
Transfers out of Level 3, Assets | (25) | [1] | (95) | [1]
Ending Balance, Fair Value Assets | 125 |  | 203 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 5 |  | 5 |
Significant Unobservable Inputs (Level 3) [Member] | Other Asset-Backed [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 317 |  | 349 |
Realized Gains / (Losses), Assets | (46) |  | (62) |
Unrealized Gains / (Losses) Included in OCI, Assets | 73 |  | 32 |
Purchases, Assets | 3 |  | 9 |
Settlements, Assets | (29) |  | (22) |
Sales, Assets | (285) |  | (2) |
Transfers into Level 3, Assets | 4 | [1] | 78 | [1]
Transfers out of Level 3, Assets | (11) | [1] | (65) | [1]
Ending Balance, Fair Value Assets | 26 |  | 317 |
Significant Unobservable Inputs (Level 3) [Member] | Other Asset-Backed [Member] | Variable Interest Entity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 67 |  | 81 |
Unrealized Gains / (Losses) Included in Earnings, Assets | 6 |  | (10) |
Purchases, Assets | 4 |  |  |
Settlements, Assets | (11) |  | (2) |
Sales, Assets | (36) |  | (19) |
Transfers into Level 3, Assets | 34 | [1] | 19 | [1]
Transfers out of Level 3, Assets |  |  | (2) | [1]
Ending Balance, Fair Value Assets | 64 |  | 67 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Assets still held, Assets | 7 |  | (4) |
Significant Unobservable Inputs (Level 3) [Member] | State And Municipal Bonds [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 28 |  | 50 |
Realized Gains / (Losses), Assets |  |  | 1 |
Unrealized Gains / (Losses) Included in OCI, Assets | (1) |  |  |
Purchases, Assets |  |  | 2 |
Settlements, Assets | (7) |  | (24) |
Sales, Assets |  |  | (1) |
Transfers into Level 3, Assets | 83 | [1] |  |
Ending Balance, Fair Value Assets | 103 |  | 28 |
Significant Unobservable Inputs (Level 3) [Member] | Equity Securities [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Assets | 11 |  |  |
Unrealized Gains / (Losses) Included in Earnings, Assets | 1 |  |  |
Unrealized Gains / (Losses) Included in OCI, Assets | 2 |  |  |
Purchases, Assets |  |  | 10 |
Transfers into Level 3, Assets | 3 | [1] | 1 | [1]
Transfers out of Level 3, Assets | (3) | [1] |  |
Ending Balance, Fair Value Assets | 14 |  | 11 |
Significant Unobservable Inputs (Level 3) [Member] | Medium-Term Notes [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Liabilities | 165 |  | 116 |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | (3) |  | 78 |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Foreign Exchange Recognized in OCI or Earnings, Liabilities | 3 |  | (4) |
Issuances, Liabilities |  |  |  |
Settlements, Liabilities |  |  | (25) |
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities | 165 |  | 165 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities | (3) |  | 78 |
Significant Unobservable Inputs (Level 3) [Member] | Credit Derivatives [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Liabilities | 4,790 |  | 4,350 |
Realized Gains / (Losses), Liabilities | 464 |  | 2,477 |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | (1,869) |  | 440 |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Purchases, Liabilities |  |  | (8) |
Issuances, Liabilities |  |  |  |
Settlements, Liabilities | (464) |  | (2,477) |
Transfers into Level 3, Liabilities |  |  | 8 | [1]
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities | 2,921 |  | 4,790 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities | (927) |  | 2,702 |
Significant Unobservable Inputs (Level 3) [Member] | Credit Derivatives [Member] | Liabilities Of Consolidated VIEs [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Liabilities | 80 |  | 768 |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | 2 |  | (11) |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Issuances, Liabilities |  |  |  |
Sales, Liabilities | (82) |  | (677) |
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities |  |  | 80 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities |  |  | (80) |
Significant Unobservable Inputs (Level 3) [Member] | Interest Rate Derivatives [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Liabilities | (3) |  | (5) |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | (2) |  | 1 |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Issuances, Liabilities |  |  |  |
Transfers into Level 3, Liabilities | 4 | [1] | 1 | [1]
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities | (1) |  | (3) |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities | 18 |  | 12 |
Significant Unobservable Inputs (Level 3) [Member] | Currency Derivatives [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Issuances, Liabilities |  |  |  |
Transfers into Level 3, Liabilities | 1 | [1] |  |
Transfers out of Level 3, Liabilities |  | [1] |  |
Ending Balance, Fair Value Liabilities | 1 |  |  |
Significant Unobservable Inputs (Level 3) [Member] | Currency Derivatives [Member] | Liabilities Of Consolidated VIEs [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Liabilities | 17 |  | 14 |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | 4 |  | 3 |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Issuances, Liabilities |  |  |  |
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities | 21 |  | 17 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities | 4 |  | 3 |
Significant Unobservable Inputs (Level 3) [Member] | Variable Interest Entity Notes [Member] | Liabilities Of Consolidated VIEs [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Beginning Balance, Fair Value Liabilities | 2,889 |  | 4,673 |
Unrealized Gains / (Losses) Included in Earnings, Liabilities | 465 |  | 94 |
Unrealized Gains / (Losses) Included in OCI, Liabilities |  |  |  |
Issuances, Liabilities |  |  |  |
Settlements, Liabilities | (439) |  | (554) |
Sales, Liabilities | (983) |  | (1,324) |
Transfers out of Level 3, Liabilities |  | [1] |  | [1]
Ending Balance, Fair Value Liabilities | 1,932 |  | 2,889 |
Change in Unrealized Gains (Losses) for the Period Included in Earnings for Liabilities still held, Liabilities | $ 409 |  | $ 94 |
[1] | Transferred in and out at the end of the period.

X
- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis In Foreign Exchange Recognized Other Comprehensive Income or Earnings, Assets + References No definition available. + Details
Name: | mbi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInForeignExchangeRecognizedOtherComprehensiveIncomeOrEarningsAssets
Namespace Prefix: | mbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis In Foreign Exchange Recognized Other Comprehensive Income or Earnings, Liabilities + References No definition available. + Details
Name: | mbi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInForeignExchangeRecognizedOtherComprehensiveIncomeOrEarningsLiabilities
Namespace Prefix: | mbi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Definition This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in trading revenues. Such unrealized (holding) gains or losses relate to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph d -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_FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This item represents the amount of the total change in unrealized (holding) gains or losses for the period which are included in the statement of income (or changes in net assets) in trading revenue. Such unrealized (holding) gains or losses relate to those liabilities still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph d -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_FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInTradingRevenue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Transfers into liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Transfers out of liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in earnings, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in other comprehensive income, arising from assets measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Issues that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of increase (decrease) of assets measured at fair value on a recurring basis using unobservable inputs (level 3). Such increase (decrease) may be comprised of changes in fair value (gains or losses) whether realized or unrealized that have been included in earnings, changed net asset value, or other comprehensive income (a separate component of shareholders' equity); purchases, sales, issues, or settlements of assets; and net transfers in to or out of this category within the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(1), c(2), c(3) -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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchases that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Sales that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Settlements that have taken place during the period in relation to assets measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Transfers into assets measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Transfers out of assets measured at fair value and categorized within Level 3 of the fair value hierarchy that have taken place during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This element represents an asset measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of gain (loss) recognized in earnings, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(1) -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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in other comprehensive income, arising from liabilities measured at fair value on a recurring basis using unobservable inputs (level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(1) -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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Issues that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of increase (decrease) of liabilities measured at fair value on a recurring basis using unobservable inputs (level 3) which have taken place during the period. Such increase (decrease) may be comprised of changes in fair value (gains or losses) whether realized or unrealized that have been included in earnings, changed net asset value, or other comprehensive income (a separate component of shareholders' equity); purchases, sales, issues, or settlements of assets; and net transfers in to or out of this category within the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c(1), c(2), c(3) -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_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Purchases that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Sales that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySales
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Settlements that have taken place during the period in relation to liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents a liability measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant