XML 52 R35.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Fresh Start Accounting - Assets and Liabilities at Fair Value (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 19, 2012
Investments held in trust, at fair value: |
Fixed-maturity securities, Predecessor | $ 303,169 wmih_PreconfirmationFixedMaturitySecurities
Cash equivalents held in trust, Predecessor | 26,249 wmih_PreconfirmationCashAndCashEquivalentsHeldInTrust
Total investments held in trust, Predecessor | 329,418 wmih_PreconfirmationInvestmentsHeldInTrust
Cash and cash equivalents, Predecessor | 7,014 us-gaap_PreconfirmationCashAndCashEquivalents
Fixed-maturity securities, at fair value, Predecessor | 6,049 wmih_PreconfirmationFixedMaturitySecuritiesAtFairValue
Accrued investment income, Predecessor | 2,313 wmih_PreconfirmationInvestmentsIncome
Other assets, Predecessor | 3,389 us-gaap_PreconfirmationOtherAssets
Total assets, Predecessor | 348,183 us-gaap_PreconfirmationAssets
Cash and cash equivalents, Reorganization Adjustments | 75,000 us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents
Other assets, Reorganization Adjustments | 210,000 us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssets
Total assets, Reorganization Adjustments | 285,000 us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets
Other assets, Fair Value Adjustments | (210,000)wmih_PreconfirmationFairValueAdjustmentsOtherAssets
Total assets, Fair Value Adjustments | (210,000)wmih_PreconfirmationFairValueAdjustmentsAssets
Fixed-maturity securities, Successor | 303,169 wmih_PostconfirmationFixedMaturitySecurities
Cash equivalents held in trust, Successor | 26,249 wmih_PostconfirmationCashAndCashEquivalentsHeldInTrust
Total investments held in trust, Successor | 329,418 wmih_PostconfirmationInvestmentsHeldInTrust
Cash and cash equivalents, Successor | 82,014 us-gaap_PostconfirmationCashAndCashEquivalents
Fixed-maturity securities, at fair value, Successor | 6,049 wmih_PostconfirmationFixedMaturitySecuritiesAtFairValue
Accrued investment income, Successor | 2,313 wmih_PostconfirmationInvestmentsIncome
Other assets, Successor | 3,389 us-gaap_PostconfirmationOtherAssets
Total assets, Successor | 423,183 us-gaap_PostconfirmationAssets
Liabilities: |
Losses and loss adjustment reserves, Predecessor | 141,010 wmih_PreconfirmationLossesAndLossAdjustmentReserves
Losses payable, Predecessor | 7,585 wmih_PreconfirmationLossesPayable
Unearned premiums, Predecessor | 409 wmih_PreconfirmationUnearnedPremiums
Accrued ceding commissions, Predecessor | 466 wmih_PreconfirmationAccruedCedingCommissions
Other liabilities, Predecessor | 27,156 wmih_PreconfirmationOtherLiabilities
Total liabilities, Predecessor | 176,626 us-gaap_PreconfirmationLiabilities
Notes payable-principal, Reorganization Adjustments | 130,000 wmih_FreshStartAdjustmentIncreaseDecreaseNotesPayable
Other liabilities, Reorganization Adjustments | (23,109)wmih_FreshStartAdjustmentIncreaseDecreaseOtherLiabilities
Total liabilities, Reorganization Adjustments | 106,891 us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities
Loss contract fair market value reserve, Fair Value Adjustments | 63,064 wmih_PreconfirmationFairValueAdjustmentLossContractFairMarketValueReserve
Other liabilities, Fair Value Adjustments | 2 wmih_PreconfirmationFairValueAdjustmentOtherLiabilities
Total liabilities, Fair Value Adjustments | 63,066 wmih_PreconfirmationFairValueAdjustmentsLiabilities
Notes payable, Successor | 130,000 wmih_PostconfirmationNotesPayable
Losses and loss adjustment reserves, Successor | 141,010 wmih_PostconfirmationLossesAndLossAdjustmentReserves
Losses payable, Successor | 7,585 wmih_PostconfirmationLossesPayable
Unearned premiums, Successor | 409 wmih_PostconfirmationUnearnedPremiums
Accrued ceding commissions, Successor | 466 wmih_PostconfirmationAccruedCedingCommissions
Loss contract fair market value reserve, Successor | 63,064 wmih_PostconfirmationLossContractFairMarketValueReserve
Other liabilities, Successor | 4,049 wmih_PostconfirmationOtherLiabilities
Total liabilities, Successor | 346,583 us-gaap_PostconfirmationLiabilities
Shareholders’ equity: |
Common stock, Predecessor | 1 us-gaap_PreconfirmationCommonStock
Additional paid-in capital, Predecessor | 69,879 us-gaap_PreconfirmationAdditionalPaidInCapital
Retained earnings, Predecessor | 101,677 us-gaap_PreconfirmationRetainedEarningsDeficit
Total shareholders’ equity, Predecessor | 171,557 us-gaap_PreconfirmationStockholdersEquity
Total liabilities and shareholders’ equity, Predecessor | 348,183 us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity
Common stock, Reorganization Adjustments | 2 us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock
Additional paid-in capital, Reorganization Adjustments | 154,998 us-gaap_FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital
Retained earnings, Reorganization Adjustments | 23,109 us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit
Total shareholders' equity, Reorganization Adjustments | 178,109 us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity
Total liabilities and shareholders' equity, Reorganization Adjustments | 285,000 us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity
Common stock, Fair Value Adjustments | (1)wmih_PreconfirmationFairValueAdjustmentCommonStock
Additional paid-in capital (Predecessor), Fair Value Adjustments | (69,879)wmih_PreconfirmationFairValueAdjustmentAdditionalPaidInCapitalPredecessor
Additional paid-in capital (Successor), Fair Value Adjustments | (78,400)wmih_PreconfirmationFairValueAdjustmentAdditionalPaidInCapital
Retained earnings, Fair Value Adjustments | (124,786)wmih_PreconfirmationFairValueAdjustmentRetainedEarningsDeficit
Total shareholders' equity, Fair Value Adjustments | (273,066)wmih_PreconfirmationFairValueAdjustmentStockholdersEquity
Total liabilities and shareholders' equity, Fair Value Adjustments | (210,000)wmih_PreconfirmationFairValueAdjustmentLiabilitiesAndStockholdersEquity
Postconfirmation, Common Stock | 2 us-gaap_PostconfirmationCommonStock
Postconfirmation, Additional Paid-in Capital | 76,598 us-gaap_PostconfirmationAdditionalPaidInCapital
Total shareholders' equity, Successor | 76,600 us-gaap_PostconfirmationStockholdersEquity
Total liabilities and shareholders' equity, Successor | $ 423,183 us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity

X
- Definition Amount of fresh-start adjustment to additional paid-in capital. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total fresh-start adjustment to assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of fresh-start adjustment to cash and cash equivalents. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of fresh-start adjustment to common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total fresh-start adjustment to liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total fresh-start adjustment to liabilities and stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total fresh-start adjustment to other assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of fresh-start adjustment to retained earnings or deficit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=6916575&loc=d3e55811-112764 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total fresh-start adjustment to stockholders' equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_FreshStartAdjustmentIncreaseDecreaseStockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Amount of additional paid-in capital at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PostconfirmationAdditionalPaidInCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total assets at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PostconfirmationAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cash and cash equivalents at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PostconfirmationCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of common stock at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PostconfirmationCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total liabilities at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PostconfirmationLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total liabilities and stockholders' equity at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PostconfirmationLiabilitiesAndStockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total other assets at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PostconfirmationOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Total stockholders' equity at the balance sheet date after fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PostconfirmationStockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of additional paid-in capital at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PreconfirmationAdditionalPaidInCapital
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total assets at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PreconfirmationAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of cash and cash equivalents at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PreconfirmationCashAndCashEquivalents
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of common stock at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PreconfirmationCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total liabilities at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PreconfirmationLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total liabilities and stockholders' equity at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PreconfirmationLiabilitiesAndStockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total other assets at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6918054&loc=SL2890621-112765 + Details
Name: | us-gaap_PreconfirmationOtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of retained earnings or deficit at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PreconfirmationRetainedEarningsDeficit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Total stockholders' equity at the balance sheet date before fresh-start adjustments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56426-112766 + Details
Name: | us-gaap_PreconfirmationStockholdersEquity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Definition Fresh start adjustment increase decrease notes payable. + References No definition available. + Details
Name: | wmih_FreshStartAdjustmentIncreaseDecreaseNotesPayable
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fresh start adjustment increase decrease other liabilities. + References No definition available. + Details
Name: | wmih_FreshStartAdjustmentIncreaseDecreaseOtherLiabilities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Postconfirmation accrued ceding commissions. + References No definition available. + Details
Name: | wmih_PostconfirmationAccruedCedingCommissions
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Post-confirmation cash and cash equivalents held in trust. + References No definition available. + Details
Name: | wmih_PostconfirmationCashAndCashEquivalentsHeldInTrust
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Post-confirmation fixed-maturity securities. + References No definition available. + Details
Name: | wmih_PostconfirmationFixedMaturitySecurities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Post-confirmation fixed maturity securities at fair value. + References No definition available. + Details
Name: | wmih_PostconfirmationFixedMaturitySecuritiesAtFairValue
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Post-confirmation investments held in trust. + References No definition available. + Details
Name: | wmih_PostconfirmationInvestmentsHeldInTrust
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Postconfirmation investments income. + References No definition available. + Details
Name: | wmih_PostconfirmationInvestmentsIncome
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Post-confirmation loss contract fair market value reserve. + References No definition available. + Details
Name: | wmih_PostconfirmationLossContractFairMarketValueReserve
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Postconfirmation losses and loss adjustment reserves. + References No definition available. + Details
Name: | wmih_PostconfirmationLossesAndLossAdjustmentReserves
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Postconfirmation losses payable. + References No definition available. + Details
Name: | wmih_PostconfirmationLossesPayable
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Post-confirmation notes payable. + References No definition available. + Details
Name: | wmih_PostconfirmationNotesPayable
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Postconfirmation other liabilities. + References No definition available. + Details
Name: | wmih_PostconfirmationOtherLiabilities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Postconfirmation unearned premiums. + References No definition available. + Details
Name: | wmih_PostconfirmationUnearnedPremiums
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pre-confirmation accrued ceding commissions. + References No definition available. + Details
Name: | wmih_PreconfirmationAccruedCedingCommissions
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pre-confirmation cash and cash equivalents held in trust. + References No definition available. + Details
Name: | wmih_PreconfirmationCashAndCashEquivalentsHeldInTrust
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Preconfirmation fair value adjustment additional paid in capital. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentAdditionalPaidInCapital
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment additional paid in capital predecessor. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentAdditionalPaidInCapitalPredecessor
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment common stock. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentCommonStock
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment liabilities and stockholders equity. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentLiabilitiesAndStockholdersEquity
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment Loss contract fair market value reserve. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentLossContractFairMarketValueReserve
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment other liabilities. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentOtherLiabilities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment retained earnings deficit. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentRetainedEarningsDeficit
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustments assets. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentsAssets
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustments liabilities. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentsLiabilities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustments other assets. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentsOtherAssets
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Preconfirmation fair value adjustment stockholders equity. + References No definition available. + Details
Name: | wmih_PreconfirmationFairValueAdjustmentStockholdersEquity
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Pre-confirmation fixed-maturity securities. + References No definition available. + Details
Name: | wmih_PreconfirmationFixedMaturitySecurities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Pre-confirmation fixed maturity securities at fair value. + References No definition available. + Details
Name: | wmih_PreconfirmationFixedMaturitySecuritiesAtFairValue
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Pre-confirmation investments held in trust. + References No definition available. + Details
Name: | wmih_PreconfirmationInvestmentsHeldInTrust
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Pre-confirmation investments income. + References No definition available. + Details
Name: | wmih_PreconfirmationInvestmentsIncome
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Pre-confirmation losses and loss adjustment reserves. + References No definition available. + Details
Name: | wmih_PreconfirmationLossesAndLossAdjustmentReserves
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pre-confirmation losses payable. + References No definition available. + Details
Name: | wmih_PreconfirmationLossesPayable
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pre-confirmation other liabilities. + References No definition available. + Details
Name: | wmih_PreconfirmationOtherLiabilities
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Pre-confirmation unearned premiums. + References No definition available. + Details
Name: | wmih_PreconfirmationUnearnedPremiums
Namespace Prefix: | wmih_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant