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Restructuring - Summary of Impairment by Reportable Business Segment (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Asset impairments		$ 25.6	$ 0.0	$ 0.0
Restructuring, 2020 Initiative
Restructuring Cost and Reserve [Line Items]
Asset impairments	$ 18.6	18.6
Operating Segments | Aviation segment | Restructuring, 2020 Initiative
Restructuring Cost and Reserve [Line Items]
Asset impairments		6.9
Operating Segments | Land segment | Restructuring, 2020 Initiative
Restructuring Cost and Reserve [Line Items]
Asset impairments		5.9
Operating Segments | Marine segment | Restructuring, 2020 Initiative
Restructuring Cost and Reserve [Line Items]
Asset impairments		4.0
Corporate | Restructuring, 2020 Initiative
Restructuring Cost and Reserve [Line Items]
Asset impairments		$ 1.8

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228

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- Definition

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+ References

No definition available.

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