Net Income (Loss) Per Common Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Earnings Per Share Reconciliation [Abstract]
Net income (loss) attributable to Genesis Energy L.P.	$ 117,720	$ 75,457	$ (165,067)
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units	(90,725)	(80,052)	(74,736)
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON UNITHOLDERS-BASIC	26,995	(4,595)	(239,803)
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON UNITHOLDERS-DILUTED	$ 26,995	$ (4,595)	$ (239,803)
Basic Weighted Average Outstanding Units (in units)	122,535	122,579	122,579
Dilutive Weighted Average Outstanding Units (in units)	122,535	122,579	122,579
Basic Net Loss per Common Unit (in dollars per unit)	$ 0.22	$ (0.04)	$ (1.96)
Dilutive Net Income (Loss) per Common Unit (in dollars per unit)	$ 0.22	$ (0.04)	$ (1.96)