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Securitizations and Variable Interest Entities - Narrative (Details) (USD $)
3 Months Ended 12 Months Ended 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Servicing Assets at Fair Value [Line Items]      
Average period to securitization 30 days    
Percentage of loan transferred through securitization 60 days or more past due 4.90%ocn_PercentageOfLoanTransferredThroughSecuritizationSixtyDaysOrMorePastDue 5.10%ocn_PercentageOfLoanTransferredThroughSecuritizationSixtyDaysOrMorePastDue  
Charge-offs, net of recoveries associated with transferred loans $ 0us-gaap_AllowanceForLoanAndLeaseLossesWriteoffsNet    
Lending [Member] | HECM [Member]      
Servicing Assets at Fair Value [Line Items]      
Loans pledged as collateral 1,800,000,000us-gaap_LoansPledgedAsCollateral
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ocn_HomeEquityConversionMortgagesMember
/ us-gaap_StatementBusinessSegmentsAxis
= ocn_LendingMember
1,600,000,000us-gaap_LoansPledgedAsCollateral
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= ocn_HomeEquityConversionMortgagesMember
/ us-gaap_StatementBusinessSegmentsAxis
= ocn_LendingMember
 
HMBS - Related Borrowings [Member]      
Servicing Assets at Fair Value [Line Items]      
Secured borrowings 1,700,000,000ocn_SecuredBorrowingsWithPledgeOfCollateral
/ us-gaap_DebtInstrumentAxis
= ocn_HMBSRelatedBorrowingsMember
1,400,000,000ocn_SecuredBorrowingsWithPledgeOfCollateral
/ us-gaap_DebtInstrumentAxis
= ocn_HMBSRelatedBorrowingsMember
 
Mortgage Servicing Rights - Amortized Costs [Member]      
Servicing Assets at Fair Value [Line Items]      
Acquisitions $ 8,500,000ocn_ServicingAssetsatAmortizedCostAdditionsRecognizedfromSecuritizationTrustsRelatedToTransfersAccountedForAsSales
/ us-gaap_FinancialInstrumentAxis
= ocn_MortgageServicingRightsAmortizedCostsMember
  $ 11,600,000ocn_ServicingAssetsatAmortizedCostAdditionsRecognizedfromSecuritizationTrustsRelatedToTransfersAccountedForAsSales
/ us-gaap_FinancialInstrumentAxis
= ocn_MortgageServicingRightsAmortizedCostsMember