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Basis Of Presentation Investment in PHH Home Loans (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]          
Equity earnings from equity method investment $ 4 $ 6 $ 13 $ 7  
PHH Home Loans [Member]          
Schedule of Equity Method Investments [Line Items]          
Equity method investment ownership percentage 49.90%   49.90%    
Equity earnings from equity method investment $ 3 $ 4 $ 11 5  
Cash dividends from equity method investment     5 $ 0  
Carrying value of equity method investments $ 60   $ 60   $ 54