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Organization and Basis of Presentation Narrative 2 (Details) - Orbitz
$ / shares in Units, shares in Millions, $ in Millions
Feb. 12, 2015
USD ($)
$ / shares
Jul. 25, 2007
shares
Jun. 30, 2015
Countries
Dec. 31, 2014
Dec. 31, 2014
Rate
Dec. 31, 2013
Rate
Shares beneficially owned [Line Items]            
Number of Countries in which Entity Operates | Countries     8      
Shares beneficially owned by parent, percentage     1.00% 48.00% 1.00% 48.00%
Conversion of stock, amount converted, per share | $ / shares $ 12.00          
Termination fee, if competition law matters not met | $ $ 115.0          
IPO            
Shares beneficially owned [Line Items]            
Sale of stock, number of shares issued | shares   34.4