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v3.19.3

Subsequent Events (Details) - Subsequent Event $ in Millions | Nov. 07, 2019 USD ($)
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Subsequent Event [Line Items] |
Expected value to be received from the planned sale of employee relocation business | $ 400
Expected cash proceeds at closing from the planned sale of employee relocation business | 375
Expected deferred payment from the planned sale of employee relocation business | $ 25

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- Definition Expected cash proceeds at closing from the planned sale of employee relocation business + References No definition available. + Details
Name: | rlgy_ExpectedCashProceedsAtClosingFromThePlannedSaleOfEmployeeRelocationBusiness
Namespace Prefix: | rlgy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expected deferred payment at closing from the planned sale of employee relocation business transaction. + References No definition available. + Details
Name: | rlgy_ExpectedDeferredPaymentAtClosingFromThePlannedSaleOfEmployeeRelocationBusiness
Namespace Prefix: | rlgy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Expected value to be received at closing from the planned sale of employee relocation business + References No definition available. + Details
Name: | rlgy_ExpectedValueToBeReceivedAtClosingFromThePlannedSaleOfEmployeeRelocationBusiness
Namespace Prefix: | rlgy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |