Commitments And Contingencies (Narrative) (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014	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	$ 4,600,000,000
Aggregate purchase obligations	126,000,000
Other Receivables	627,000,000	500,000,000
Realogy [Member]
Schedule Of Commitments And Contingencies [Line Items]
Percentage of assumption of contingent and other corporate liabilities	62.50%
Other Receivables	62,000,000
Wyndham [Member]
Schedule Of Commitments And Contingencies [Line Items]
Percentage of assumption of contingent and other corporate liabilities	37.50%
Other Receivables	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	37,000,000
Liability recorded in connection with guarantees	$ 1,000,000