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Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Assets acquired: |  |  |
Goodwill | [1] | $ 680.6 | $ 675.8
Acquisitions 2016 | Land Segment |  |  |
Assets acquired: |  |  |
Goodwill |  | 2.1 |
2015 Acquisitions | Land Segment |  |  |
Goodwill |  |  |
Increase (decrease) in goodwill |  | 0.1 |
2014 Acquisitions | Land Segment |  |  |
Goodwill |  |  |
Increase (decrease) in goodwill due to foreign currency translation adjustments |  | (1.8) |
2014 Acquisitions | Aviation Segment |  |  |
Goodwill |  |  |
Increase (decrease) in goodwill due to foreign currency translation adjustments |  | 1.0 |
2014 Acquisitions | Marine segment |  |  |
Goodwill |  |  |
Increase (decrease) in goodwill due to foreign currency translation adjustments |  | $ 0.3 |
[1] | Amounts may not add due to rounding

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