Business Segment Information (Reconciliation Of Segment Margin To (Loss) Income from Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting [Abstract]
Total Segment Margin	$ 138,645	$ 144,881
Corporate general and administrative expenses	(8,327)	(11,358)
Depreciation, amortization and accretion	(58,395)	(49,175)
Interest expense	(36,739)	(34,387)
Adjustment to exclude distributable cash generated by equity investees not included in income and include equity in investees net income (1)	(9,290)	(10,614)
Non-cash items not included in Segment Margin	437	(4,374)
Cash payments from direct financing leases in excess of earnings	(1,667)	(1,511)
Differences in timing of cash receipts for certain contractual arrangements	2,681	2,842
Income tax expense	(255)	(1,001)
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	$ 27,090	$ 35,303