Basis Of Presentation Investment in PHH Home Loans (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity earnings from equity method investment	$ 5	$ 4	$ 10	$ 13
PHH Home Loans
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage	49.90%		49.90%
Equity earnings from equity method investment	$ 4	$ 3	$ 7	11
Cash dividends from equity method investment			3	$ 5
Carrying value of equity method investments	$ 63		$ 63		$ 58

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