Commitments And Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended		12 Months Ended
	Jun. 30, 2010	Oct. 31, 2009	Dec. 31, 2012	Dec. 31, 2011
Schedule Of Commitments And Contingencies [Line Items]
Future sublease rental inflows			$ 6
Period for other purchase obligations extending through			2015
Percentage of payment on defaulting party's obligation on assumed liabilities			50.00%
Claims paid on breach of contract	3	16
Lawsuit, filed year		2003
Vehicle purchase commitments over the next 12 months			5,100
Aggregate purchase obligations			168
Liabilities accrued for asset retirement obligations			26	28
Maximum
Schedule Of Commitments And Contingencies [Line Items]
Operating leases, residual value of leased assets			37
Realogy
Schedule Of Commitments And Contingencies [Line Items]
Percentage of assumption of contingent and other corporate liabilities			62.50%
Percentage of proceeds from contingent corporate assets, entitled to receive			62.50%
Receivables due from former subsidiaries			64
Wyndham
Schedule Of Commitments And Contingencies [Line Items]
Percentage of assumption of contingent and other corporate liabilities			37.50%
Percentage of proceeds from contingent corporate assets, entitled to receive			37.50%
Receivables due from former subsidiaries			40
Realogy Wyndham And Travelport | Real Estate Leases
Schedule Of Commitments And Contingencies [Line Items]
Maximum potential amount of future payments under guarantees			91
Liability recorded in connection with guarantees			$ 2