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Basis of Presentation Equity Method Investments (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]      
Equity Method Investments $ 177    
Equity in losses of unconsolidated entities (1) $ (2)  
Guaranteed Rate Affinity | Title Group      
Schedule of Equity Method Investments [Line Items]      
Equity Method Investments $ 65   $ 67
Equity Method Investment, Ownership Percentage 49.90%    
Equity in losses of unconsolidated entities $ (2) (2)  
Title Insurance Underwriter Joint Venture | Title Group      
Schedule of Equity Method Investments [Line Items]      
Equity Method Investments $ 74   74
Equity Method Investment, Ownership Percentage 25.00%    
Equity in losses of unconsolidated entities $ 1 1  
Other Various Equity Method Investments | Title Group and Owned Brokerage Group      
Schedule of Equity Method Investments [Line Items]      
Equity Method Investments 38   $ 37
Equity in losses of unconsolidated entities $ 1 $ (1)