Short And Long-Term Debt Senior Secured Credit Facility (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended					3 Months Ended						6 Months Ended
	Jun. 30, 2013 Quarters	Mar. 05, 2013	Jun. 30, 2013 Required Covenant Ratio [Member]	Jun. 30, 2013 Scenario, Actual [Member]	Jun. 30, 2013 Maximum [Member] Required Covenant Ratio to Receive Additional Credit Facilities [Member]	Jun. 30, 2013 Non-voting Stock [Member]	Jun. 30, 2013 Voting Stock, Foreign Subsidiary [Member]	Jun. 30, 2013 Synthetic Letter of Credit Facility [Member]	Dec. 31, 2012 Synthetic Letter of Credit Facility [Member]	Jun. 30, 2013 Synthetic Letter of Credit Facility [Member] October 2013 [Member]	Jun. 30, 2013 Synthetic Letter of Credit Facility - General Corporate Purposes [Member]	Jun. 30, 2013 Term loan facility LIBOR [Member]	Jun. 30, 2013 Term loan facility ABR [Member]	Jun. 30, 2013 Revolving credit facility LIBOR [Member]	Jun. 30, 2013 Revolving credit facility ABR [Member]	Jun. 30, 2013 Secured Debt [Member] Term loan facility		Mar. 05, 2013 Secured Debt [Member] Term loan facility		Jun. 30, 2013 Line of Credit [Member] Revolving credit facility		Mar. 05, 2013 Line of Credit [Member] Revolving credit facility
Debt Instrument [Line Items]
Debt Instrument, term																		7 years				5 years
Debt instrument, face amount																$ 1,915	[1]	$ 1,920	[1]
Debt Instrument, percent of par																		99.00%
Repayments of Secured Debt	1,822
Line of credit facility borrowing capacity								155		36										475	[2],[3]	475	[2],[3]
Letter of credit borrowing capacity		250
Description of variable interest rate basis												LIBOR	ABR	LIBOR	ABR
Debt Instrument, Basis Spread on Variable Rate												3.50%	2.50%	2.75%	1.75%
Debt Instrument, Basis Spread on Variable Rate, Floor												1.00%	2.00%
Additional Credit Facilities		500
Senior secured leverage ratio			4.75	3.37	3.50
Ratio of Indebtedness to Net Capital Denominator			1.0	1.0	1.0
Borrowings under the revolving credit facility as a percentage of total commitments	25.00%
Outstanding letters of credit								$ 53	$ 70		$ 85
Quarterly Amortization Payment Percent Per Annum of Principal, Term Loans								1.00%								1.00%
First security pledge of capital stock						100.00%	65.00%
Event of Default, Right to Cure Leverage Ratio, Number of Quarters	3
Number of Consecutive Quarters	4

[1] Consists of a $1,915 million term loan, less a discount of $19 million. The interest rate with respect to the term loan under the senior secured credit facility is based on, at Realogy Group’s option, (a) adjusted LIBOR plus 3.50% (with a LIBOR floor of 1.00%) or (b) JPMorgan Chase Bank, N.A.’s prime rate (“ABR”) plus 2.50% (with an ABR floor of 2.0%).

[2] Interest rates with respect to revolving loans under the senior secured credit facility are based on, at Realogy Group’s option, (a) adjusted LIBOR plus 2.75% or (b) JPMorgan Chase Bank, N.A., prime rate ("ABR") plus 1.75% in each case subject to reductions based on the attainment of certain leverage ratios.

[3] On July 31, 2013, the Company had $55 million outstanding on the revolving credit facility and no outstanding letters of credit on such facility, leaving $420 million of available capacity.