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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
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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 |  |  |  |

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- Details
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