Restructuring (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	$ 9.5
Severance costs	1.7
Payments	(4.2)
Restructuring charges as of March 31, 2020	7.0
Operating Segments | Aviation
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	0.5
Severance costs	0.1
Payments	(0.4)
Restructuring charges as of March 31, 2020	0.2
Operating Segments | Land
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	7.5
Severance costs	1.3
Payments	(2.7)
Restructuring charges as of March 31, 2020	6.1
Operating Segments | Marine
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	1.3
Severance costs	0.1
Payments	(0.8)
Restructuring charges as of March 31, 2020	0.7
Corporate
Restructuring Reserve [Roll Forward]
Balance as of December 31, 2019	0.2
Severance costs	0.2
Payments	(0.3)
Restructuring charges as of March 31, 2020	$ 0.1