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Goodwill and Other Intangible Assets (Details) ₪ in Millions, $ in Millions | 2 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Feb. 23, 2015 ILS (₪) | Feb. 23, 2015 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2015 USD ($) | Sep. 01, 2015 USD ($) | Dec. 31, 2014 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Payments to Acquire Businesses and Interest in Affiliates |  |  | $ 8.1 |  | $ 2.4 |  |  |
Assets |  |  | 10,391.8 | $ 10,391.8 |  | $ 10,282.6 |  |
Goodwill |  |  | 187.9 | 187.9 | 169.2 | 187.9 |  | $ 168.9
Intangible Assets, Net (Excluding Goodwill) |  |  | 183.6 | 183.6 | $ 178.2 | 187.8 |  | $ 182.3
Liabilities |  |  | $ 6,154.5 | 6,154.5 |  | $ 5,914.6 |  |
Lowfares.com [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Payments to Acquire Businesses and Interest in Affiliates |  |  |  | $ 3.9 |  |  |  |
TruBridge [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  |  |  |  | 100.00% |
Assets |  |  |  |  |  |  | $ 54.5 |
Goodwill |  |  |  |  |  |  | 18.7 |
Intangible Assets, Net (Excluding Goodwill) |  |  |  |  |  |  | 28.1 |
Liabilities |  |  |  |  |  |  | $ 4.3 |
Common Stock | Israel, New Shekels | Cashboard [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Payments to Acquire Businesses and Interest in Affiliates | ₪ | ₪ 35.9 |  |  |  |  |  |  |
Common Stock | United States of America, Dollars | Cashboard [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Payments to Acquire Businesses and Interest in Affiliates |  | $ 8.9 |  |  |  |  |  |
Cashboard [Member] |  |  |  |  |  |  |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |
Assets |  | 5.5 |  |  |  |  |  |
Goodwill |  | 0.3 |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill) |  | 2.8 |  |  |  |  |  |
Liabilities |  | $ 1.2 |  |  |  |  |  |

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