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Business Acquisitions - Schedule of Purchase Price Allocation (Footnote) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Business Acquisition [Line Items]      
Purchase price $ 0us-gaap_PaymentsToAcquireBusinessesGross $ 2,289,709us-gaap_PaymentsToAcquireBusinessesGross $ 603,724us-gaap_PaymentsToAcquireBusinessesGross
ResCap [Member]      
Business Acquisition [Line Items]      
Advances 0us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= ocn_ResCapMember
54,220us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= ocn_ResCapMember
 
ResCap [Member] | MSRs [Member]      
Business Acquisition [Line Items]      
Purchase price 174,600us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= ocn_ResCapMember
/ us-gaap_FinancialInstrumentAxis
= ocn_MortgageServicingRightsMember
   
Advances   $ 54,220us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= ocn_ResCapMember
/ us-gaap_FinancialInstrumentAxis
= ocn_MortgageServicingRightsMember