Business Segments - Income Statement Items (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenue:
Revenue	$ 17,122.1	$ 7,085.5	$ 29,504.1	$ 13,043.4
Income from operations:
Income from operations	52.8	30.9	94.1	68.6
Corporate overhead - unallocated
Income from operations:
Income from operations	(26.0)	(15.9)	(48.8)	(40.5)
Aviation segment
Revenue:
Revenue	7,843.5	2,805.8	12,854.0	4,900.8
Aviation segment | Operating Segments
Income from operations:
Income from operations	(6.9)	34.0	0.7	57.0
Land segment
Revenue:
Revenue	5,431.8	2,457.2	9,812.6	4,645.4
Land segment | Operating Segments
Income from operations:
Income from operations	33.0	8.1	66.3	40.9
Marine segment
Revenue:
Revenue	3,846.8	1,822.4	6,837.5	3,497.1
Marine segment | Operating Segments
Income from operations:
Income from operations	$ 52.7	$ 4.8	$ 75.9	$ 11.1