CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Total World Fuel Shareholders' Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest Equity
Beginning balance (in shares) at Dec. 31, 2021			61.7
Beginning balance at Dec. 31, 2021	$ 1,916.8	$ 1,912.7	$ 0.6	$ 168.1	$ 1,880.6	$ (136.7)	$ 4.1
Increase (Decrease) in Shareholders' Equity
Net income (loss)	26.3	26.3			26.3		(0.1)
Cash dividends declared	(7.6)	(7.6)			(7.6)
Amortization of share-based payment awards	3.7	3.7		3.7
Issuance (cancellation) of common stock related to share-based payment awards (in shares)			0.1
Issuance of common stock for acquisition of a business (in shares)			1.8
Issuance of common stock for acquisition of a business	50.0	50.0		50.0
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to share-based payment awards	(1.3)	(1.3)		(1.3)
Purchases of common stock (in shares)			(0.5)
Purchases of common stock	(13.7)	(13.7)		(13.7)
Other comprehensive income (loss)	(28.7)	(28.7)				(28.7)
Ending balance (in shares) at Mar. 31, 2022			63.0
Ending balance at Mar. 31, 2022	$ 1,945.5	1,941.4	$ 0.6	206.7	1,899.4	(165.4)	4.1
Beginning balance (in shares) at Dec. 31, 2022	62.0		62.0
Beginning balance at Dec. 31, 2022	$ 1,990.7	1,984.9	$ 0.6	182.4	1,962.5	(160.6)	5.9
Increase (Decrease) in Shareholders' Equity
Net income (loss)	22.6	22.8			22.8		(0.2)
Cash dividends declared	(8.6)	(8.6)			(8.6)
Amortization of share-based payment awards	6.1	6.1		6.1
Issuance (cancellation) of common stock related to share-based payment awards (in shares)			0.1
Purchases of common stock tendered by employees to satisfy the required withholding taxes related to share-based payment awards	(0.3)	(0.3)		(0.3)
Other comprehensive income (loss)	$ 3.5	3.5				3.5
Ending balance (in shares) at Mar. 31, 2023	62.1		62.1
Ending balance at Mar. 31, 2023	$ 2,014.0	$ 2,008.3	$ 0.6	$ 188.2	$ 1,976.7	$ (157.1)	$ 5.7