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Sales of Advances and MSRs - Narrative (Details) (USD $) In Billions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Transfers and Servicing of Financial Assets [Abstract]
Unpaid Principal Balance Of Loans Related To Servicing Assets Sold	$ 15.9

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- Definition

Unpaid principal balance of loans related to servicing assets, measured at fair value, that have been conveyed to the third parties.

+ References

No definition available.

+ Details

Name:	ocn_UnpaidPrincipalBalanceOfLoansRelatedToServicingAssetsSold
Namespace Prefix:	ocn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

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