CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (400,314)	$ 100,066	$ (11,792)
Other comprehensive income (loss):
Decrease (increase) in benefit plan liability	(934)	(9,370)	1,543
Total Comprehensive income (loss)	(401,248)	90,696	(10,249)
Comprehensive (income) loss attributable to noncontrolling interests	(251)	(1,834)	5,717
Comprehensive income attributable to redeemable noncontrolling interests	(16,113)	(2,233)	0
Comprehensive income (loss) attributable to Genesis Energy, L.P.	$ (417,612)	$ 86,629	$ (4,532)