Business Consolidations - Schedule of Pro Forma Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pro forma consolidated financial operating results:
Revenues	$ 807,618	$ 813,647	$ 2,402,892	$ 2,396,773
Net Income Attributable to Genesis Energy, L.P.	58,070	8,758	105,770	44,126
Net Loss Attributable to Common Unitholders, Basic (in dollars per unit)	35,762	(9,926)	36,550	(11,926)
Net Loss Attributable to Common Unitholders, Diluted (in dollars per unit)	$ 35,762	$ (9,926)	$ 36,550	$ (11,926)
Basic and diluted earnings (loss) per common unit:
Basic Net Loss per Common Unit (in dollars per unit)	$ 0.29	$ (0.12)	$ 0.30	$ (0.18)
Dilutive Net Loss per common unit (in dollars per unit)	0.29	(0.12)	0.30	(0.18)
Pro Forma net loss per common unit, basic (in dollars per unit)	0.29	(0.08)	0.30	(0.10)
Pro forma net loss per common unit, diluted (in dollars per unit)	$ 0.29	$ (0.08)	$ 0.30	$ (0.10)