Business Segments, Geographic Information, and Major Customers - Income Statement Items (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues [Abstract]
Revenue	$ 42,168.0	$ 47,710.6	$ 59,043.1
Operating expenses:
Cost of revenue	(41,141.6)	(46,652.4)	(57,954.1)
Provision for credit losses	(12.0)	(4.7)	(7.7)
Asset impairments	(29.0)	(32.8)	(0.6)
Restructuring charges	(7.1)	(7.2)	0.8
Income from operations:
Income (loss) from operations	210.6	198.0	273.2
Non-operating income (expenses), net:
Interest expense and other financing costs, net	(102.2)	(127.7)	(110.6)
Other income (expense), net	(12.9)	(3.6)	(17.5)
Income (loss) before income taxes	95.5	66.7	145.1
Operating Segments
Revenues [Abstract]
Revenue	42,168.0	47,710.6	59,043.1
Operating expenses:
Cost of revenue	(41,141.6)	(46,652.4)	(57,954.1)
Compensation and related costs	(322.3)	(334.2)	(320.7)
Incentive compensation	56.6	74.1	84.5
Corporate allocations (1)	(76.4)	(83.7)	(80.5)
Depreciation and amortization	55.1	59.3	65.2
Provision for credit losses	(12.1)	(4.8)	(7.6)
Asset impairments	(7.0)	(13.7)	(0.6)
Restructuring charges	(6.6)	(5.5)	0.8
Other segment expenses (2)	(144.0)	(151.8)	(150.3)
Income from operations:
Income (loss) from operations	346.3	331.2	380.6
Operating Segments | Aviation
Revenues [Abstract]
Revenue	20,469.1	23,275.1	26,799.9
Operating expenses:
Cost of revenue	(19,983.6)	(22,789.3)	(26,442.7)
Compensation and related costs	(114.0)	(124.7)	(114.7)
Incentive compensation	26.0	31.5	28.8
Corporate allocations (1)	(37.2)	(40.0)	(36.1)
Depreciation and amortization	16.2	19.9	21.5
Provision for credit losses	(2.5)	(2.7)	(2.7)
Asset impairments	(0.1)	(0.8)	0.0
Restructuring charges	(0.1)	(1.5)	0.8
Other segment expenses (2)	(49.0)	(55.9)	(54.7)
Income from operations:
Income (loss) from operations	240.4	208.8	99.5
Operating Segments | Land
Revenues [Abstract]
Revenue	12,811.7	15,189.9	19,283.7
Operating expenses:
Cost of revenue	(12,427.2)	(14,790.1)	(18,807.8)
Compensation and related costs	(175.6)	(176.4)	(172.9)
Incentive compensation	17.9	29.3	33.7
Corporate allocations (1)	(17.1)	(19.9)	(21.6)
Depreciation and amortization	37.8	38.3	42.3
Provision for credit losses	(10.2)	(2.2)	(3.9)
Asset impairments	(6.9)	(12.8)	(0.6)
Restructuring charges	(3.2)	(4.0)	0.0
Other segment expenses (2)	(74.6)	(76.8)	(75.3)
Income from operations:
Income (loss) from operations	41.1	40.1	125.6
Operating Segments | Marine
Revenues [Abstract]
Revenue	8,887.2	9,245.6	12,959.6
Operating expenses:
Cost of revenue	(8,730.8)	(9,073.0)	(12,703.6)
Compensation and related costs	(32.7)	(33.1)	(33.1)
Incentive compensation	12.6	13.2	21.9
Corporate allocations (1)	(22.1)	(23.8)	(22.9)
Depreciation and amortization	1.1	1.2	1.4
Provision for credit losses	0.7	0.1	(1.0)
Asset impairments	0.0	0.0	0.0
Restructuring charges	(3.3)	0.0	0.0
Other segment expenses (2)	(20.4)	(19.1)	(20.2)
Income from operations:
Income (loss) from operations	64.8	82.3	155.5
Corporate
Income from operations:
Income (loss) from operations	$ (135.7)	$ (133.2)	$ (107.4)