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Data Type:	xbrli:monetaryItemType
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Annual percentage of the original principal amount for which quarterly amortization payments are made.

No definition available.

Name:	rlgy_Annualpercentageoforiginalprincipalamountforquarterlyamortizationpayments
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Data Type:	num:percentItemType
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Period Type:	instant

LIBOR floor amount.

No definition available.

Name:	rlgy_DebtInstrumentBasisSpreadOnVariableRateFloor
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Debt Instrument, Basis Spread on Variable Rate Change

No definition available.

Name:	rlgy_DebtInstrumentBasisSpreadonVariableRateChange
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Data Type:	num:percentItemType
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Period Type:	duration

Maximum borrowing capacity under the letter of credit facility.

No definition available.

Name:	rlgy_LetterOfCreditBorrowingCapacity
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Ratio of Indebtedness to Net Capital Denominator

No definition available.

Name:	rlgy_RatioOfIndebtednessToNetCapitalDenominator
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Data Type:	xbrli:pureItemType
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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Data Type:	num:percentItemType
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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

No definition available.

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Data Type:	xbrli:stringItemType
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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.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Fair value amount of debt instrument that was repurchased.

No definition available.

Name:	us-gaap_DebtInstrumentRepurchaseAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Indebtedness divided by net capital.

No definition available.

Name:	us-gaap_RatioOfIndebtednessToNetCapital1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	rlgy_DebtCovenantRatioAxis=rlgy_RequiredCovenantRatioToReceiveAdditionalCreditFacilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	rlgy_DebtCovenantRatioAxis=rlgy_RequiredCovenantRatioMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	rlgy_InterestRateTypeAxis=rlgy_LiborMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	rlgy_InterestRateTypeAxis=rlgy_AbrMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_DebtInstrumentAxis=rlgy_TermLoanBFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_DebtInstrumentAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	rlgy_SeniorSecuredLeverageRatioScenarioAxis=rlgy_Greaterthan3.50to1.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
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Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	rlgy_SeniorSecuredLeverageRatioScenarioAxis=rlgy_Lessthan2.50to1.00Member
Namespace Prefix:
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