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Fair Value - Summary of Reconciliation of the Changes in Fair Value of Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Footnote) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Losses attributable to derivatives $ 0.7us-gaap_GainLossOnSaleOfDerivatives $ 1.2us-gaap_GainLossOnSaleOfDerivatives
HLSS [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Reimbursement to HLSS for loss of servicing revenues $ 2.0ocn_ServicingRevenueReimbursementPayable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= ocn_HomeLoanServicingSolutionsMember