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Note 13. Commitments And Contingencies Other Guarantees, Insurance and Self-Insurance (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Loss Contingencies [Line Items]    
Insurance liabilities $ 40,000 $ 31,000
Self insurance accruals 16,000 $ 21,000
Maximum    
Loss Contingencies [Line Items]    
Guarantees, gross 7,000  
Fidelity Insurance    
Loss Contingencies [Line Items]    
Insurance deductible 750  
Fidelity Insurance | Maximum    
Loss Contingencies [Line Items]    
Insurance liabilities 30,000  
Company Owned Real Estate Brokerage Services | Errors and Omissions Insurance    
Loss Contingencies [Line Items]    
Insurance liabilities 15,000  
Insurance deductible 1,000  
Company Owned Real Estate Brokerage Services | Errors and Omissions Insurance including additional Realogy Group Coverage    
Loss Contingencies [Line Items]    
Insurance deductible 1,000  
Company Owned Real Estate Brokerage Services | Errors and Omissions Insurance including additional Realogy Group Coverage | Maximum    
Loss Contingencies [Line Items]    
Insurance liabilities 50,000  
Realogy Group | Errors and Omissions Insurance    
Loss Contingencies [Line Items]    
Insurance deductible 2,500  
Realogy Group | Errors and Omissions Insurance | Maximum    
Loss Contingencies [Line Items]    
Insurance liabilities 35,000  
Title and Settlement Services | Maximum    
Loss Contingencies [Line Items]    
Underwriter of title insurance policies, value, per policy 1,500  
Title and Settlement Services | Minimum    
Loss Contingencies [Line Items]    
Underwriter of title insurance policy, reinsurance policy obtained from national underwriter, value per policy $ 1,500