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Mortgage Servicing - Narrative (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Servicing Asset at Amortized Cost [Line Items]      
Unpaid principal balance of small balance commercial loans serviced $ 2,100,000,000ocn_UnpaidPrincipalBalanceOfSmallBalanceCommercialLoansServiced $ 2,300,000,000ocn_UnpaidPrincipalBalanceOfSmallBalanceCommercialLoansServiced $ 2,500,000,000ocn_UnpaidPrincipalBalanceOfSmallBalanceCommercialLoansServiced
Float balances 4,000,000,000us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountAsset   3,500,000,000us-gaap_FairValueDisclosureOffbalanceSheetRisksAmountAsset
HLSS [Member]      
Servicing Asset at Amortized Cost [Line Items]      
Reimbursements on account of loss of servicing revenues $ 2,200,000ocn_ReimbursementsOnAccountOfLossOfServicingRevenues
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ocn_HomeLoanServicingSolutionsMember