Organization, Business Description and Basis of Presentation - Additional Information (Details)	3 Months Ended
Mar. 31, 2014 Segment Country Brand
Description Of Business And Basis Of Presentation [Line Items]
Number of countries with localized versions of website	36
Number of other travel brands with websites	20
Number of reportable segment	1

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration