Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	$ 77,638	$ 78,994	$ 162,766	$ 155,120
Refinery services	43,068	41,324	88,114	83,860
Marine Transportation Revenues	53,202	52,609	103,504	104,645
Onshore Facilities and Transportation Revenues	232,815	273,049	467,830	480,765
Total revenues	406,723	445,976	822,214	824,390
Onshore facilities and transportation costs	222,334	252,120	436,666	439,889
Marine Transportation Operating Costs	38,949	34,430	76,191	67,452
Refinery services operating costs	26,606	21,579	53,970	42,564
Offshore Pipeline Transportation Operating Costs	18,124	22,676	35,992	40,610
General and administrative	9,338	11,283	19,314	23,504
Depreciation and amortization	56,609	55,900	112,721	102,535
Gain (Loss) on Disposition of Assets	(26,684)	0	(26,684)	0
Total costs and expenses	345,276	397,988	708,170	716,554
OPERATING INCOME	61,447	47,988	114,044	107,836
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	10,426	12,157	21,761	22,874
Interest Income (Expense), Net	(37,990)	(35,535)	(74,729)	(69,922)
Income from continuing operations before income taxes	33,883	24,610	61,076	60,788
Income tax (expense) benefit	(303)	(1,009)	(558)	(2,010)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	33,580	23,601	60,518	58,778
Net loss attributable to noncontrolling interest	153	126	305	252
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	33,733	23,727	60,823	59,030
Reportable Legal Entities | Genesis Energy Finance Corporation (Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Refinery services	0	0	0	0
Marine Transportation Revenues	0	0	0	0
Onshore Facilities and Transportation Revenues	0	0	0	0
Total revenues	0	0	0	0
Onshore facilities and transportation costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	0	0	0	0
Offshore Pipeline Transportation Operating Costs	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Gain (Loss) on Disposition of Assets	0		0
Total costs and expenses	0	0	0	0
OPERATING INCOME	0	0	0	0
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	0	0	0	0
Income from continuing operations before income taxes	0	0	0	0
Income tax (expense) benefit	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0	0	0
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	0	0	0	0
Reportable Legal Entities | Genesis Energy, L.P. (Parent and Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Refinery services	0	0	0	0
Marine Transportation Revenues	0	0	0	0
Onshore Facilities and Transportation Revenues	0	0	0	0
Total revenues	0	0	0	0
Onshore facilities and transportation costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	0	0	0	0
Offshore Pipeline Transportation Operating Costs	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Gain (Loss) on Disposition of Assets	0		0
Total costs and expenses	0	0	0	0
OPERATING INCOME	0	0	0	0
Equity in earnings of subsidiaries	71,691	60,205	135,500	128,863
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	(37,958)	(35,508)	(74,677)	(69,833)
Income from continuing operations before income taxes	33,733	24,697	60,823	59,030
Income tax (expense) benefit	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	33,733	24,697	60,823	59,030
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	33,733	24,697	60,823	59,030
Reportable Legal Entities | Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	77,638	78,994	162,766	155,120
Refinery services	42,995	42,115	88,029	84,409
Marine Transportation Revenues	53,202	52,609	103,504	104,645
Onshore Facilities and Transportation Revenues	228,291	268,063	458,361	470,234
Total revenues	402,126	441,781	812,660	814,408
Onshore facilities and transportation costs	222,055	251,840	436,126	439,313
Marine Transportation Operating Costs	38,949	34,430	76,191	67,452
Refinery services operating costs	26,586	22,167	53,739	42,613
Offshore Pipeline Transportation Operating Costs	17,362	22,044	34,468	39,349
General and administrative	9,338	11,283	19,314	23,504
Depreciation and amortization	55,984	55,275	111,471	101,285
Gain (Loss) on Disposition of Assets	(26,684)		(26,684)
Total costs and expenses	343,590	397,039	704,625	713,516
OPERATING INCOME	58,536	44,742	108,035	100,892
Equity in earnings of subsidiaries	(395)	(156)	(645)	(78)
Equity in earnings of equity investees	10,426	12,157	21,761	22,874
Interest Income (Expense), Net	3,466	3,632	6,986	7,266
Income from continuing operations before income taxes	72,033	60,375	136,137	130,954
Income tax (expense) benefit	(303)	(1,097)	(558)	(2,007)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	71,730	59,278	135,579	128,947
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	71,730	59,278	135,579	128,947
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0		0
Refinery services	2,089	1,715	3,899	2,518
Marine Transportation Revenues	0	0	0	0
Onshore Facilities and Transportation Revenues	4,524	4,986	9,469	10,531
Total revenues	6,613	6,701	13,368	13,049
Onshore facilities and transportation costs	279	280	540	576
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	2,036	1,918	4,045	3,018
Offshore Pipeline Transportation Operating Costs	762	632	1,524	1,261
General and administrative	0	0	0	0
Depreciation and amortization	625	625	1,250	1,250
Gain (Loss) on Disposition of Assets	0		0
Total costs and expenses	3,702	3,455	7,359	6,105
OPERATING INCOME	2,911	3,246	6,009	6,944
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	(3,498)	(3,659)	(7,038)	(7,355)
Income from continuing operations before income taxes	(587)	(413)	(1,029)	(411)
Income tax (expense) benefit	0	88	0	(3)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(587)	(325)	(1,029)	(414)
Net loss attributable to noncontrolling interest	153	126	305	252
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	(434)	(199)	(724)	(162)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Refinery services	(2,016)	(2,506)	(3,814)	(3,067)
Marine Transportation Revenues	0	0	0	0
Onshore Facilities and Transportation Revenues	0	0	0	0
Total revenues	(2,016)	(2,506)	(3,814)	(3,067)
Onshore facilities and transportation costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	(2,016)	(2,506)	(3,814)	(3,067)
Offshore Pipeline Transportation Operating Costs	0	0	0	0
General and administrative	0	0	0	0
Depreciation and amortization	0	0	0	0
Gain (Loss) on Disposition of Assets	0		0
Total costs and expenses	(2,016)	(2,506)	(3,814)	(3,067)
OPERATING INCOME	0	0	0	0
Equity in earnings of subsidiaries	(71,296)	(60,049)	(134,855)	(128,785)
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	0	0	0	0
Income from continuing operations before income taxes	(71,296)	(60,049)	(134,855)	(128,785)
Income tax (expense) benefit	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(71,296)	(60,049)	(134,855)	(128,785)
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	$ (71,296)	$ (60,049)	$ (134,855)	$ (128,785)