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Commitments - Schedule of Activity Related to HMBS Repurchases (Footnote) (Details) - Maximum Claim Amount $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($) loan
Long-term Purchase Commitment [Line Items] |
Number of maximum claim amount repurchases loans | loan | 423
Amount of maximum claim amount repurchases | $ | $ 95.3

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- Definition This represents the amount of maximum claim amounts repurchased. + References No definition available. + Details
Name: | ocn_AmountOfMaximumClaimAmountRepurchases
Namespace Prefix: | ocn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition This represents the number of maximum claim amounts repurchased. + References No definition available. + Details
Name: | ocn_NumberOfMaximumClaimAmountRepurchasesLoans
Namespace Prefix: | ocn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- 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

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- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=ocn_MaximumClaimAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |