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Mortgage Servicing - Summary of Activity in Carrying Value of Amortization Method Servicing Assets (Footnote) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Servicing Asset at Amortized Cost [Line Items] |  |  |
Proceeds from sale of mortgage servicing rights | $ 287,000 us-gaap_ProceedsFromSaleOfMortgageServicingRightsMSR | $ 34,754,000 us-gaap_ProceedsFromSaleOfMortgageServicingRightsMSR | $ 0 us-gaap_ProceedsFromSaleOfMortgageServicingRightsMSR
Deferred gain on sale of MSRs |  | 5,100,000 ocn_DeferredUnrecognizedGainOnSaleOfMortgageLoans |
OneWest MSR Transaction [Member] |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
Unpaid principal balance acquired | 1,100,000,000 ocn_AssetAcquisitionLoansUnpaidPrincipalBalance / us-gaap_BusinessAcquisitionAxis = ocn_OneWestMSRTransactionMember |  |
Servicing advances acquired | 34,300,000 ocn_AssetAcquisitionAdvancesAcquired / us-gaap_BusinessAcquisitionAxis = ocn_OneWestMSRTransactionMember |  |
Greenpoint MSR Transaction [Member] |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
Unpaid principal balance acquired | 7,300,000,000 ocn_AssetAcquisitionLoansUnpaidPrincipalBalance / us-gaap_BusinessAcquisitionAxis = ocn_GreenpointMSRTransactionMember |  |
Servicing advances acquired | 469,700,000 ocn_AssetAcquisitionAdvancesAcquired / us-gaap_BusinessAcquisitionAxis = ocn_GreenpointMSRTransactionMember |  |
Mortgage Servicing Rights [Member] | OneWest MSR Transaction [Member] |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
Unpaid principal balance acquired | 70,100,000,000 ocn_AssetAcquisitionLoansUnpaidPrincipalBalance / us-gaap_BusinessAcquisitionAxis = ocn_OneWestMSRTransactionMember / us-gaap_FinancialInstrumentAxis = ocn_MortgageServicingRightsMember |  |
Servicing advances acquired | 2,100,000,000 ocn_AssetAcquisitionAdvancesAcquired / us-gaap_BusinessAcquisitionAxis = ocn_OneWestMSRTransactionMember / us-gaap_FinancialInstrumentAxis = ocn_MortgageServicingRightsMember |  |
Mortgage Servicing Rights [Member] | Greenpoint MSR Transaction [Member] |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
Unpaid principal balance acquired | 948,900,000 ocn_AssetAcquisitionLoansUnpaidPrincipalBalance / us-gaap_BusinessAcquisitionAxis = ocn_GreenpointMSRTransactionMember / us-gaap_FinancialInstrumentAxis = ocn_MortgageServicingRightsMember |  |
Servicing advances acquired | $ 47,600,000 ocn_AssetAcquisitionAdvancesAcquired / us-gaap_BusinessAcquisitionAxis = ocn_GreenpointMSRTransactionMember / us-gaap_FinancialInstrumentAxis = ocn_MortgageServicingRightsMember |  |

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- Definition Amount of non-interest-bearing servicing advances acquired in connection with the acquisition of servicing assets. + References No definition available. + Details
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Namespace Prefix: | ocn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the unpaid principal balance of loans related to servicing acquired in connection with the acquisition of servicing assets. + References No definition available. + Details
Name: | ocn_AssetAcquisitionLoansUnpaidPrincipalBalance
Namespace Prefix: | ocn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represent unrecognized deferred gain on sale of MSRs. + References No definition available. + Details
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Namespace Prefix: | ocn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The cash inflow from the sale of servicing rights, which contractually entitle the servicer to receive fees and ancillary revenues for performing billing, collection, disbursement and recordkeeping services in connection with a mortgage portfolio. Rights may be obtained via (1) acquisition or assumption of a servicing obligation that does not relate to financial assets of the servicer or its consolidated affiliates; or (2) by originating mortgage loans and then (a) transferring the loans to a Variable Interest Entity (VIE) in a transaction that meets the necessary transfer and classification requirements, or (b) transferring the loans in a transaction that meets the requirements for sale accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7524895&loc=d3e120260-111741 + Details
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- Details
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- Details
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- Details
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- Details
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Period Type: |