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Restructuring - Summary of Restructuring Activities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 10.3	$ 19.7	$ 17.1
Restructuring, 2020 Initiative
Restructuring Reserve [Roll Forward]
Beginning Balance	9.5	20.7
Restructuring charges	10.3	19.7
Paid during the period	(13.3)	(30.8)
Ending Balance	6.6	9.5	20.7
Land segment
Restructuring Reserve [Roll Forward]
Restructuring charges		19.7
Operating Segments | Aviation segment | Restructuring, 2020 Initiative
Restructuring Reserve [Roll Forward]
Beginning Balance	0.5	1.4
Restructuring charges	3.3	1.2
Paid during the period	(3.0)	(2.1)
Ending Balance	0.9	0.5	1.4
Operating Segments | Land segment | Restructuring, 2020 Initiative
Restructuring Reserve [Roll Forward]
Beginning Balance	7.5	12.6
Restructuring charges	3.9	4.4
Paid during the period	(6.7)	(9.6)
Ending Balance	4.6	7.5	12.6
Operating Segments | Marine segment | Restructuring, 2020 Initiative
Restructuring Reserve [Roll Forward]
Beginning Balance	1.3	2.6
Restructuring charges	1.9	1.2
Paid during the period	(2.3)	(2.4)
Ending Balance	0.9	1.3	2.6
Corporate | Restructuring, 2020 Initiative
Restructuring Reserve [Roll Forward]
Beginning Balance	0.2	4.0
Restructuring charges	1.2	13.0
Paid during the period	(1.4)	(16.8)
Ending Balance	$ 0.1	$ 0.2	$ 4.0

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Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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