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Commitments - Narrative (Details) $ in Millions | Jun. 30, 2018 USD ($)
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Floating Rate Reverse Mortgage Loans [Member] |
Other Commitments [Line Items] |
Additional borrowing capacity to borrowers | $ 1,500.0
Forward Mortgage Loan Interest Rate Lock Commitments [Member] |
Other Commitments [Line Items] |
Short-term commitments to lend | 85.2
Reverse Mortgage Loan Interest Rate Lock Commitments [Member] |
Other Commitments [Line Items] |
Short-term commitments to lend | $ 21.2

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- Definition Additional borrowing capacity to borrowers. + References No definition available. + Details
Name: | ocn_AdditionalBorrowingCapacityToBorrowers
Namespace Prefix: | ocn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Short-term commitments to lend. + References No definition available. + Details
Name: | ocn_ShortTermCommitmentsToLend
Namespace Prefix: | ocn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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- Details
Name: | us-gaap_FinancialInstrumentAxis=ocn_FloatingRateReverseMortgageLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=ocn_ForwardMortgageLoanInterestRateLockCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FinancialInstrumentAxis=ocn_ReverseMortgageLoanInterestRateLockCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |