Net Loss Per Common Unit (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net Income per Common Unit [Abstract]
Net income (loss) attributable to Genesis Energy, L.P.	$ (17,177)	$ 58,070	$ (14,568)	$ 105,770
Less: Accumulated distributions and returns attributable to Class A Convertible Preferred Units	(21,894)	(22,308)	(65,682)	(69,220)
NET LOSS ATTRIBUTABLE TO COMMON UNITHOLDERS-BASIC	(39,071)	35,762	(80,250)	36,550
NET LOSS ATTRIBUTABLE TO COMMON UNITHOLDERS-DILUTED	$ (39,071)	$ 35,762	$ (80,250)	$ 36,550
Dilutive Weighted Average Outstanding Units (in units)	122,464	122,521	122,464	122,559
Basic Net Loss per Common Unit (in dollars per unit)	$ (0.32)	$ 0.29	$ (0.66)	$ 0.30
Dilutive Net Loss per common unit (in dollars per unit)	$ (0.32)	$ 0.29	$ (0.66)	$ 0.30