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v3.20.1

Subsequent Events (Details) | Nov. 07, 2019 USD ($)
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Subsequent Events [Abstract] |
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
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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
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Namespace Prefix: | rlgy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_SubsequentEventsAbstract
Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration