Earnings Per Share (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Earnings Per Share
Net income (loss) attributable to PHH Corporation (in dollars)	$ 90	$ (57)	$ 142	$ 18
Weighted-average common shares outstanding - basic (in shares)	57,320,953	56,803,903	57,285,088	56,730,471
Effect of potentially dilutive securities:
Share-based payment arrangements (in shares)	140,484		189,649	152,126
Conversion of debt securities (in shares)	7,360,737		7,826,754	2,518,414
Weighted-average common shares outstanding - diluted (in shares)	64,822,174	56,803,903	65,301,491	59,401,011
Basic earnings (loss) per share attributable to PHH Corporation (in dollars per share)	$ 1.58	$ (1.00)	$ 2.48	$ 0.32
Diluted earnings (loss) per share attributable to PHH Corporation (in dollars per share)	$ 1.40	$ (1.00)	$ 2.18	$ 0.31
Contingently issuable shares
Contingently issuable shares for which the contingency has not been met	719,606	358,984	719,606	358,984
Outstanding stock-based compensation awards
Anti-dilutive securities
Anti-dilutive securities excluded from the computation of dilutive securities (in shares)	1,109,118	2,066,270	650,818	1,623,297
Debt securities
Anti-dilutive securities
Anti-dilutive securities excluded from the computation of dilutive securities (in shares)		4,195,717