Loans Held for Sale - Schedule of Loans Held for Sale at Lower Cost or Fair Value, Activity (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Movement In Loans Held For Sale At Fair Value [Roll Forward]
Beginning balance - before Valuation Allowance	$ 22,471	$ 49,204	$ 27,652	$ 73,160
Proceeds from sales	(1,827)	(16,373)	(6,667)	(46,865)
Principal collections	0	(154)	(214)	(805)
Receivables, net	(492)	(205)	(492)	61
Gain (loss) on sale of loans	125	(227)	514	1,615
Other	1	(365)	(515)	4,714
Ending balance - before Valuation Allowance	20,278	31,880	20,278	31,880
Ending balance, net	$ 15,154	$ 25,480	$ 15,154	$ 25,480

Gain (loss) on sale of mortgage loans held-for-sale, at lower cost or fair value.

No definition available.

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Loans held for sale at lower of cost or fair value.

No definition available.

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Loans held for sale at lower of cost or fair value.

No definition available.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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Other adjustments to mortgage loans held-for-sale, at lower cost or fair value.

No definition available.

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Proceeds from principal payments on mortgage loans held-for-sale, at lower of cost or fair value.

No definition available.

Name:	ocn_ProceedsfromPrincipalPaymentsonMortgageLoansHeldforsaleatLowerofCostorFairValue
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Proceeds from sale of mortgage loans held-for-sale, at lower of cost or fair value.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Transfers to accounts receivable from mortgage loans held-for-sale, at lower of cost or fair value.

No definition available.

Name:	ocn_TransferstoAccountsReceivablefromMortgageLoansHeldforsaleatLowerofCostorFairValue
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