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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

X

- Definition

Decreased percentage in mortgage insurance premium rate.

+ References

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- Definition

Number of performing agency loans held for sale.

+ References

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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

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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

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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

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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

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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

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