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Loans Held for Sale - Summary of Activity in Balance of Loans Held for Sale, at Lower of Cost or Fair Value (Footnote) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Ginnie Mae [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale, at lower of cost or fair value	$ 51.8	$ 19.6	$ 24.8

X

- Definition

Loans repurchase obligation due to material breach of contractual representations and warranties associated with the agreements pursuant with our transfers of loans.

+ References

No definition available.

+ Details

Name:	ocn_RepurchaseObligationOfLoansHeldForSaleAtLowerOfCostOrFairValue
Namespace Prefix:	ocn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=ocn_GinnieMaeLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: