Stock-Based Compensation Introduction Narrative (Details) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Document Period End Date	Sep. 30, 2013	Sep. 30, 2013
Realogy Holdings 2007 Stock Incentive Plan [Member]
Shares authorized for issuance under the plan (in shares)	2.8	2.8
Shares available for future grant under the plan (in sharse)	0.1	0.1
Realogy 2012 Long-Term Incentive Plan [Member]
Shares authorized for issuance under the plan (in shares)	6.8	6.8
Shares available for future grant under the plan (in sharse)	3.9	3.9