Commitments And Contingencies (Narrative) (Detail) (USD $)	3 Months Ended
	Mar. 31, 2013	Sep. 30, 2013
Schedule Of Commitments And Contingencies [Line Items]
Percentage of payment on defaulting party's obligation on assumed liabilities	50.00%
Purchase obligation over the next twelve months		$ 4,400,000,000
Aggregate purchase obligations		168,000,000
Realogy [Member]
Schedule Of Commitments And Contingencies [Line Items]
Percentage of assumption of contingent and other corporate liabilities	62.50%
Receivables due from former subsidiaries		61,000,000
Wyndham [Member]
Schedule Of Commitments And Contingencies [Line Items]
Percentage of assumption of contingent and other corporate liabilities	37.50%
Receivables due from former subsidiaries		38,000,000
Realogy, Wyndham And Travelport [Member] | Real Estate Leases [Member]
Schedule Of Commitments And Contingencies [Line Items]
Maximum potential amount of future payments under guarantees		59,000,000
Liability recorded in connection with guarantees		$ 2,000,000