Basis Of Presentation Investment in PHH Home Loans (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Equity earnings from equity method investment	$ (3)	$ 0
PHH Home Loans
Schedule of Equity Method Investments [Line Items]
Equity method investment ownership percentage	49.90%
Equity earnings from equity method investment	$ (4)	0
Cash dividends from equity method investment	0	$ 0
Carrying value of equity method investments	$ 55		$ 59

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