CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue	$ 42,168.0	$ 47,710.6	$ 59,043.1
Cost of revenue	41,141.6	46,652.4	57,954.1
Gross profit	1,026.4	1,058.2	1,089.1
Operating expenses:
Compensation and employee benefits	482.5	512.3	507.4
General and administrative	297.1	308.0	308.7
Asset impairments	29.0	32.8	0.6
Restructuring and Exit Activities Charges	7.1	7.2	(0.8)
Total operating expenses	815.7	860.2	815.8
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)
Total non-operating income (expense), net	(115.1)	(131.3)	(128.1)
Income (loss) before income taxes	95.5	66.7	145.1
Provision for income taxes	27.6	13.0	29.2
Net income (loss) including noncontrolling interest	67.9	53.7	115.9
Net income (loss) attributable to noncontrolling interest	0.5	0.8	1.7
Net income (loss) attributable to World Kinect	$ 67.4	$ 52.9	$ 114.1
Basic earnings (loss) per common share (in dollars per share)	$ 1.14	$ 0.86	$ 1.83
Basic weighted average common shares (in shares)	59.0	61.4	62.3
Diluted earnings (loss) per common share (in dollars per share)	$ 1.13	$ 0.86	$ 1.82
Diluted weighted average common shares (in shares)	59.5	61.7	62.7
Comprehensive income:
Net income (loss) including noncontrolling interest	$ 67.9	$ 53.7	$ 115.9
Other comprehensive income (loss):
Foreign currency translation adjustments	67.4	19.9	(45.5)
Cash flow hedges, net of income tax expense (benefit) of ($3.5), ($2.7), and $7.6 for 2024, 2023, and 2022, respectively	(9.6)	(8.1)	21.6
Total other comprehensive income (loss)	57.9	11.8	(24.0)
Comprehensive income (loss) including noncontrolling interest	125.8	65.5	91.9
Comprehensive income (loss) attributable to noncontrolling interest	0.5	0.8	1.7
Comprehensive income (loss) attributable to World Kinect	$ 125.3	$ 64.7	$ 90.2