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Other Assets - Schedule of Other Assets (Footnote) (Details)	12 Months Ended
	Dec. 31, 2017
Other Assets [Abstract]
Period for deferred tax effects being amortized to income tax expense	7 years

X

- Definition

Period for deferred tax effects being amortized to income tax expense.

+ References

No definition available.

+ Details

Name:	ocn_PeriodForDeferredTaxEffectsBeingAmortizedToIncomeTaxExpense
Namespace Prefix:	ocn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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