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Mortgage Servicing - Schedule of Activity Related to MSRs - Amortization Method (Footnote) (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Servicing Asset at Amortized Cost [Line Items] |  |
Decreased percentage in mortgage insurance premium rate | 0.50%ocn_DecreasedPercentageInMortgageInsurancePremiumRate |
Non Agency Mortgage Servicing Rights [Member] |  |
Servicing Asset at Amortized Cost [Line Items] |  |
Fair value measurement of non-agency MSRs, cumulative-effect on retained earnings | $ 52,000,000us-gaap_CumulativeEffectAdjustmentApplicationOfFairValueOptionGrossGains / us-gaap_FinancialInstrumentAxis = ocn_NonAgencyMortgageServicingRightsMember |
Deferred income taxes | 9,200,000us-gaap_DeferredIncomeTaxesAndTaxCredits / us-gaap_FinancialInstrumentAxis = ocn_NonAgencyMortgageServicingRightsMember |
Unpaid principal balance of MSRs |  | 195,300,000,000us-gaap_MortgageLoansOnRealEstateCarryingAmountOfMortgages / us-gaap_FinancialInstrumentAxis = ocn_NonAgencyMortgageServicingRightsMember
Agency Mortgage Servicing Rights [Member] |  |
Servicing Asset at Amortized Cost [Line Items] |  |
Number of performing agency loans held for sale | 76,000ocn_NumberOfPerformingAgencyLoansHeldForSale / us-gaap_FinancialInstrumentAxis = ocn_AgencyMortgageServicingRightsMember |
Unpaid principal balance of loans held for sale | 9,100,000,000us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages / us-gaap_FinancialInstrumentAxis = ocn_AgencyMortgageServicingRightsMember |
Government Insured Mortgage Servicing Rights [Member] |  |
Servicing Asset at Amortized Cost [Line Items] |  |
Valuation allowance | $ 17,800,000us-gaap_ServicingAssetAtAmortizedValueValuationAllowance / us-gaap_FinancialInstrumentAxis = ocn_GovernmentInsuredMortgageServicingRightsMember |

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- Definition Decreased percentage in mortgage insurance premium rate. + References No definition available. + Details
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- Definition Number of performing agency loans held for sale. + References No definition available. + Details
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- Definition The gross gains that make up a cumulative-effect adjustment on retained earnings related to the election of the fair value option. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 65 -Paragraph 5 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=7480679&loc=SL6849109-159117 + Details
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- Definition Amount of deferred income tax expense (benefit) and income tax credits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 20 -Section 55 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=32706628&loc=d3e11374-113907 + Details
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- Definition The carrying amount of the outstanding balance due under the mortgage loan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of the contractual principal due at the origination of the mortgage loan (face amount). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 29 -Article 12 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph c -Subparagraph Schedule IV -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of valuation allowance applied to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(5) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
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