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Mortgage Servicing - Schedule of Composition of Servicing and Subservicing Portfolios by Type of Property Serviced (Footnote) (Details) (HLSS [Member], USD $)
In Billions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
HLSS [Member]
     
Schedule of Servicing and Subservicing Portfolio [Line Items]      
Primary servicing UPB $ 156.3us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ocn_HomeLoanServicingSolutionsMember
$ 160.8us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ocn_HomeLoanServicingSolutionsMember
$ 170.8us-gaap_MortgageLoansOnRealEstateFaceAmountOfMortgages
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ocn_HomeLoanServicingSolutionsMember