Segment Information (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	Mar. 31, 2011	Mar. 31, 2012 segment	Mar. 31, 2011	Dec. 31, 2011
Segment Information
Number of reportable segments		3
Segment Information
Total assets		$ 9,246		$ 9,777
Net revenues		777	665
Segment Profit (Loss)		114	82
Gain on sale of equity interests in the entity's appraisal services business	68
Percentage of equity interest sold in appraisal services business	50.10%
Mortgage Production segment
Segment Information
Total assets		1,955		3,085
Net revenues		296	214
Segment Profit (Loss)		117	52
Gain on sale of equity interests in the entity's appraisal services business			68
Percentage of equity interest sold in appraisal services business			50.10%
Mortgage Servicing segment
Segment Information
Total assets		2,061		2,018
Net revenues		81	57
Segment Profit (Loss)		(26)	14
Fleet Management Services segment
Segment Information
Total assets		4,431		4,337
Net revenues		401	395
Segment Profit (Loss)		24	16
Other
Segment Information
Total assets		799		337
Net revenues		(1)	(1)
Segment Profit (Loss)		$ (1)