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Commitments - Narrative (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Floating Rate Reverse Mortgage Loans [Member]      
Other Commitments [Line Items]      
Additional borrowing capacity to borrowers $ 597,500,000ocn_AdditionalBorrowingCapacityToBorrowers
/ us-gaap_FinancialInstrumentAxis
= ocn_FloatingRateReverseMortgageLoansMember
   
Forward Mortgage Loan Interest Rate Lock Commitments [Member]      
Other Commitments [Line Items]      
Short-term commitments to lend 228,800,000ocn_ShortTermCommitmentsToLend
/ us-gaap_FinancialInstrumentAxis
= ocn_ForwardMortgageLoanInterestRateLockCommitmentsMember
   
Reverse Mortgage Loan Interest Rate Lock Commitments [Member]      
Other Commitments [Line Items]      
Short-term commitments to lend 10,600,000ocn_ShortTermCommitmentsToLend
/ us-gaap_FinancialInstrumentAxis
= ocn_ReverseMortgageLoanInterestRateLockCommitmentsMember
   
Altisource [Member]      
Other Commitments [Line Items]      
Area of real estate property 2,155us-gaap_AreaOfRealEstateProperty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ocn_AltisourceMember
   
Foreign Facilities [Member]      
Other Commitments [Line Items]      
Operating leases, rent expense $ 19,000,000us-gaap_LeaseAndRentalExpense
/ us-gaap_StatementGeographicalAxis
= ocn_ForeignFacilitiesMember
$ 27,400,000us-gaap_LeaseAndRentalExpense
/ us-gaap_StatementGeographicalAxis
= ocn_ForeignFacilitiesMember
$ 14,700,000us-gaap_LeaseAndRentalExpense
/ us-gaap_StatementGeographicalAxis
= ocn_ForeignFacilitiesMember