Commitments - Schedule of Activity Related to HMBS Repurchases (Details) $ in Thousands	9 Months Ended
Sep. 30, 2021 USD ($) Securities loan
Long-term Purchase Commitment [Line Items]
Beginning balance, repurchase securities, number \| Securities	458
Additions, repurchase securities, number \| Securities	420
Recoveries, net, repurchase securities, number \| Securities	(351)
Transfers, repurchase securities, number \| Securities	0
Change in value, repurchase securities, number \| Securities	0
Ending balance, repurchase securities, number \| Securities	527
Beginning balance, repurchase securities, amount	$ 86,301
Additions, repurchase securities, amount	99,640
Recoveries, repurchase securities, amount	(68,992)
Transfers, repurchase securities, amount	0
Change in value, repurchase securities, amount	(2,485)
Ending balance, repurchase securities, amount	$ 114,464
Active
Long-term Purchase Commitment [Line Items]
Beginning balance, repurchase securities, number \| loan	141
Additions, repurchase securities, number \| loan	217
Recoveries, net, repurchase securities, number \| loan	(221)
Transfers, repurchase securities, number \| loan	(18)
Change in value, repurchase securities, number \| loan	0
Ending balance, repurchase securities, number \| Securities	119
Beginning balance, repurchase securities, amount	$ 29,852
Additions, repurchase securities, amount	57,684
Recoveries, repurchase securities, amount	(50,748)
Transfers, repurchase securities, amount	(6,261)
Change in value, repurchase securities, amount	9
Ending balance, repurchase securities, amount	$ 30,536
Inactive
Long-term Purchase Commitment [Line Items]
Beginning balance, repurchase securities, number \| loan	317
Additions, repurchase securities, number \| loan	203
Recoveries, net, repurchase securities, number \| loan	(130)
Transfers, repurchase securities, number \| loan	18
Change in value, repurchase securities, number \| loan	0
Ending balance, repurchase securities, number \| Securities	408
Beginning balance, repurchase securities, amount	$ 56,449
Additions, repurchase securities, amount	41,956
Recoveries, repurchase securities, amount	(18,244)
Transfers, repurchase securities, amount	6,261
Change in value, repurchase securities, amount	(2,494)
Ending balance, repurchase securities, amount	$ 83,928

This represents the additions to HMBS repurchase securities.

No definition available.

Name:	ocn_AdditionsToHomeEquityConversionMortgageBackedSecurityRepurchases
Namespace Prefix:	ocn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This represents the amount of additions to HMBS repurchase securities.

+ References

No definition available.

+ Details

Name:	ocn_AmountofAdditionsToHomeEquityConversionMortgageBackedSecurityRepurchasesValue
Namespace Prefix:	ocn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This represents the change in value of HMBS repurchase securities.

+ References

No definition available.

+ Details

Name:	ocn_ChangeInValueOfHomeEquityConversionMortgageBackedSecurityRepurchases
Namespace Prefix:	ocn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This represents the amount of change in value of HMBS repurchase securities.

+ References

No definition available.

+ Details

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

- Definition

This represents the number of HMBS repurchase securities outstanding.

+ References

No definition available.

+ Details

Name:	ocn_HomeEquityConversionMortgageBackedSecurityRepurchasesOutstanding
Namespace Prefix:	ocn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

This represents the amount of HMBS repurchase securities outstanding.

+ References

No definition available.

+ Details

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

- Definition

This represents the recoveries of HMBS repurchase securities.

+ References

No definition available.

+ Details

Name:	ocn_RecoveriesRelatedToHomeEquityConversionMortgageBackedSecurityRepurchases
Namespace Prefix:	ocn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This represents the amount of recoveries related to HMBS repurchase securities.

+ References

No definition available.

+ Details

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

- Definition

This represents the transfers of HMBS repurchase securities.

+ References

No definition available.

+ Details

Name:	ocn_TransfersRelatedToHomeEquityConversionMortgageBackedSecurityRepurchases
Namespace Prefix:	ocn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

This represents the amount of transfers related to HMBS repurchase securities.

+ References

No definition available.

+ Details

Name:	ocn_TransfersRelatedToHomeEquityConversionMortgageBackedSecurityRepurchasesValue
Namespace Prefix:	ocn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=ocn_ActiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=ocn_InactiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: