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Goodwill (Tables) | 6 Months Ended
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Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of changes in goodwill | The following table provides the components of and changes in the carrying amount of goodwill (in millions):
|  | Aviation |  | Land |  | Total
Balance as of December 31, 2017 |  | $ | 326.9 |  |  | $ | 518.5 |  |  | $ | 845.5 |
Additions |  | — |  |  | 13.4 |  |  | 13.4 |
Foreign exchange and other adjustments |  | (4.5 | ) |  | 2.3 |  |  | (2.2 | )
Balance as of June 30, 2018 |  | $ | 322.4 |  |  | $ | 534.2 |  |  | $ | 856.7 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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