Segment Information (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013 item		Sep. 30, 2012	Dec. 31, 2012
Segment Information
Number of reportable segments				3
Segment Information
Total Assets	$ 9,099	[1]		$ 9,099	[1]		$ 9,603	[1]
Net Revenues	615		624	2,167		1,960
Segment (Loss) Profit	(80)		(75)	150		(56)
Other
Segment Information
Total Assets	963			963			723
Net Revenues				(1)		(1)
Segment (Loss) Profit	(54)		(13)	(54)		(13)
Mortgage Production segment | Operating segment
Segment Information
Total Assets	1,488			1,488			2,587
Net Revenues	182		337	699		909
Segment (Loss) Profit	(22)		122	67		317
Mortgage Servicing segment | Operating segment
Segment Information
Total Assets	2,152			2,152			1,791
Net Revenues	29		(118)	264		(155)
Segment (Loss) Profit	(28)		(205)	71		(427)
Fleet Management Services segment | Operating segment
Segment Information
Total Assets	4,496			4,496			4,502
Net Revenues	404		405	1,205		1,207
Segment (Loss) Profit	$ 24		$ 21	$ 66		$ 67

[1] The Condensed Consolidated Balance Sheets include assets of variable interest entities which can be used only to settle their obligations and liabilities of variable interest entities which creditors or beneficial interest holders do not have recourse to PHH Corporation and subsidiaries as follows: