Net Loss Per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share Reconciliation [Abstract]
Net income (loss) attributable to Genesis Energy, L.P.	$ 35,347	$ (41,682)	$ 30,097	$ (75,906)
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	(18,684)	(18,684)	(37,368)	(37,368)
NET LOSS ATTRIBUTABLE TO COMMON UNITHOLDERS-BASIC	16,663	(60,366)	(7,271)	(113,274)
NET LOSS ATTRIBUTABLE TO COMMON UNITHOLDERS-DILUTED	$ 16,663	$ (60,366)	$ (7,271)	$ (113,274)
Basic Weighted Average Outstanding Units (in units)	122,579,000	122,579,000	122,579,000	122,579,000
Dilutive Weighted Average Outstanding Units (in units)	122,579,000	122,579,000	122,579,000	122,579,000
Basic Net Loss per Common Unit (in dollars per unit)	$ 0.14	$ (0.49)	$ (0.06)	$ (0.92)
Dilutive Net Loss per common unit (in dollars per unit)	$ 0.14	$ (0.49)	$ (0.06)	$ (0.92)
Class A Convertible Preferred Stock Units
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities not included in computation of dilutive earnings (in units)			25,336,778