CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Revenue	$ 9,452.5	$ 10,951.4
Cost of revenue	9,222.1	10,697.3
Gross profit	230.4	254.1
Operating Expenses [Abstract]
Compensation and employee benefits	105.1	115.5
General and administrative	72.4	75.1
Asset impairments	44.5	0.0
Restructuring charges	15.0	0.2
Total operating expenses	237.0	190.8
Income (loss) from operations	(6.6)	63.3
Nonoperating Income (Expense) [Abstract]
Interest expense and other financing costs, net	(22.9)	(28.9)
Other income (expense), net	1.3	(3.9)
Total non-operating income (expense), net	(21.5)	(32.8)
Income (loss) before income taxes	(28.1)	30.5
Provision for income taxes	(6.8)	3.3
Net income (loss) including noncontrolling interest	(21.3)	27.2
Net income (loss) attributable to noncontrolling interest	(0.2)	(0.2)
Net income (loss) attributable to World Kinect	$ (21.1)	$ 27.4
Basic earnings (loss) per common share	$ (0.37)	$ 0.46
Basic weighted average common shares	56.8	59.9
Diluted earnings (loss) per common share	$ (0.37)	$ 0.45
Diluted weighted average common shares	56.8	60.3
Comprehensive income:
Net income (loss) including noncontrolling interest	$ (21.3)	$ 27.2
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustments	12.6	(11.8)
Cash flow hedges, net of income tax expense (benefit) of ($0.9) and ($0.5) for the three months ended March 31, 2025 and 2024, respectively	(2.6)	(1.0)
Total other comprehensive income (loss)	10.0	(12.9)
Comprehensive income (loss) including noncontrolling interest	(11.3)	14.3
Comprehensive income (loss) attributable to noncontrolling interest	(0.2)	(0.2)
Comprehensive income (loss) attributable to World Kinect	$ (11.1)	$ 14.5