Cover Page and DEI Document and Entity Information	3 Months Ended
	Mar. 31, 2020
Document Information [Line Items]
Entity Central Index Key	0001398987
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Realogy Group LLC [Member]
Document Information [Line Items]
Entity Central Index Key	0001355001