Name:	rlgy_AdditionalCreditFacilities
Namespace Prefix:	rlgy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Annual percentage of the original principal amount for which quarterly amortization payments are made.

No definition available.

Name:	rlgy_Annualpercentageoforiginalprincipalamountforquarterlyamortizationpayments
Namespace Prefix:	rlgy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

LIBOR floor amount.

No definition available.

Name:	rlgy_DebtInstrumentBasisSpreadOnVariableRateFloor
Namespace Prefix:	rlgy_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Maximum borrowing capacity under the letter of credit facility.

No definition available.

Name:	rlgy_LetterOfCreditBorrowingCapacity
Namespace Prefix:	rlgy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Ratio of Indebtedness to Net Capital Denominator

No definition available.

Name:	rlgy_RatioOfIndebtednessToNetCapitalDenominator
Namespace Prefix:	rlgy_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

No definition available.

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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://fasb.org/us-gaap/role/ref/legacyRef
-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 4: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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.

Name:	us-gaap_DebtInstrumentDescriptionOfVariableRateBasis
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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
Namespace Prefix:	us-gaap_
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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
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:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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:
Period Type:

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:
Period Type:

Name:	rlgy_SeniorSecuredLeverageRatioScenarioAxis=rlgy_Lessthanorequalto3.50to1.00butgreaterthanorequalto2.50to1.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	rlgy_SeniorSecuredLeverageRatioScenarioAxis=rlgy_Lessthan2.50to1.00butgreaterthanorequalto2.00to1.00Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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