Net Loss Per Common Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net Income per Common Unit [Abstract]
Net income attributable to Genesis Energy, L.P.	$ 58,070	$ 3,385	$ 105,770	$ 33,482
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units	(22,308)	(18,684)	(69,220)	(56,052)
NET LOSS ATTRIBUTABLE TO COMMON UNITHOLDERS-BASIC	35,762	(15,299)	36,550	(22,570)
NET LOSS ATTRIBUTABLE TO COMMON UNITHOLDERS-DILUTED	$ 35,762	$ (15,299)	$ 36,550	$ (22,570)
Dilutive Weighted Average Outstanding Units (in units)	122,521	122,579	122,559	122,579
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)