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Goodwill (Tables)
 9 Months Ended
Sep. 30, 2019
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, 2018
 
$
322.9

 
$
529.8

 
$
852.7

Foreign exchange and other adjustments
 
(0.4
)
 
(5.4
)
 
(5.8
)
Balance as of September 30, 2019
 
$
322.5

 
$
524.4

 
$
846.9