XML 43 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document and Entity Information Document and Entity Information - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2018
Feb. 22, 2019
Document Information [Line Items]    
Document Period End Date Dec. 31, 2018  
Entity Registrant Name REALOGY HOLDINGS CORP.  
Entity Central Index Key 0001398987  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-K  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus FY  
Amendment Flag false  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding   113,485,998
Entity Shell Company false  
Entity Well-known Seasoned Issuer Yes  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Public Float $ 2.8  
Realogy [Member]    
Document Information [Line Items]    
Entity Registrant Name REALOGY GROUP LLC  
Entity Central Index Key 0001355001  
Entity Filer Category Non-accelerated Filer  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers Yes  
Entity Current Reporting Status No  
Realogy Group LLC [Member]    
Document Information [Line Items]    
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false