Subsequent Events Stock Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended			1 Months Ended			1 Months Ended
	Oct. 31, 2012	Oct. 12, 2012 Realogy Holdings 2007 Stock Incentive Plan [Member]	Oct. 12, 2012 2012 Long-Term Incentive Plan [Member]	Oct. 31, 2012 Restricted Stock [Member] 2012 Long-Term Incentive Plan [Member]	Oct. 31, 2012 Stock Options [Member] Realogy Holdings 2007 Stock Incentive Plan [Member]	Oct. 15, 2012 Stock Options [Member] Realogy Holdings 2007 Stock Incentive Plan [Member]	Oct. 31, 2012 Stock Options [Member] 2012 Long-Term Incentive Plan [Member]	Oct. 10, 2012 Stock Options [Member] 2012 Long-Term Incentive Plan [Member]
Subsequent Event [Line Items]
Common shares reserved for future issuance		2,700,000	6,800,000
Stock options granted (in shares)				300,000	40,000		1,700,000
Stock options, exercise price on grant date (per share)						$ 33.50		$ 27.00
Stock options, award vesting rate				33.00%	33.00%		25.00%
Requisite service period prior to commencement of vesting, stock options				1 year	1 year		1 year
Granted stock options, contractual term					7 years 6 months		10 years
Stock-based compensation expense	$ 2