Business Segment Information (Reconciliation Of Segment Margin To (Loss) Income from Continuing Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting [Abstract]
Total Segment Margin	$ 134,000	$ 142,486	$ 272,645	$ 287,367
Corporate general and administrative expenses	(7,137)	(10,491)	(15,464)	(21,849)
Depreciation, amortization and accretion	(59,382)	(62,213)	(117,777)	(111,388)
Interest expense	(37,990)	(35,535)	(74,729)	(69,922)
Adjustment to exclude distributable cash generated by equity investees not included in income and include equity in investees net income (1)	(9,140)	(11,141)	(18,430)	(21,755)
Non-cash items not included in Segment Margin	(1,867)	15	(1,430)	(4,359)
Cash payments from direct financing leases in excess of earnings	(1,709)	(1,548)	(3,376)	(3,059)
Differences in timing of cash receipts for certain contractual arrangements	3,166	3,163	5,847	6,005
Gain on sale of assets	26,684	0	26,684	0
Non-cash provision for leased items no longer in use	(12,589)	0	(12,589)	0
Income tax expense	(303)	(1,009)	(558)	(2,010)
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	$ 33,733	$ 23,727	$ 60,823	$ 59,030