Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Supply And Logistics Revenues	$ 387,169	$ 834,583	$ 1,317,891	$ 2,606,004
Refinery services	43,332	51,208	135,780	158,202
Marine Transportation Revenues	60,536	57,000	180,501	169,241
Pipeline transportation services	19,909	20,349	57,910	62,992
Offshore Pipeline Transportation Services Revenues	61,388	974	63,436	2,443
Total revenues	572,334	964,114	1,755,518	2,998,882
Supply and logistics costs	378,916	818,845	1,290,980	2,567,594
Marine Transportation Operating Costs	33,869	34,864	100,749	107,543
Refinery services operating costs	22,363	29,031	75,225	93,374
Pipeline transportation operating costs	6,721	6,917	19,874	22,113
Offshore Pipeline Transportation Operating Costs	17,698	276	18,341	941
General and administrative	26,799	13,765	54,852	40,471
Depreciation and amortization	41,170	25,148	96,500	64,919
Total costs and expenses	527,536	928,846	1,656,521	2,896,955
OPERATING INCOME	44,798	35,268	98,997	101,927
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	14,260	15,017	48,440	27,757
Interest Income (Expense), Net	(29,617)	(20,441)	(66,737)	(47,314)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	335,260	0	335,260	0
Other Nonoperating Income (Expense)	0	0	(17,529)	0
Income from continuing operations before income taxes	364,701	29,844	398,431	82,370
Income tax (expense) benefit	(1,292)	(731)	(3,142)	(2,334)
NET INCOME	363,409	29,113	395,289	80,036
Net Income (Loss) Attributable to Noncontrolling Interest	(195)	0	(195)	0
Net Income (Loss) Attributable to Parent	363,214	29,113	395,094	80,036
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Supply And Logistics Revenues	0	0	0	0
Refinery services	0	0	0	0
Marine Transportation Revenues	0	0	0	0
Pipeline transportation services	0	0	0	0
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Total revenues	0	0	0	0
Supply and logistics costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	0	0	0	0
Pipeline transportation 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
Total costs and expenses	0	0	0	0
OPERATING INCOME	0	0	0	0
Equity in earnings of subsidiaries	392,769	49,550	480,953	127,343
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	(29,576)	(20,437)	(66,655)	(47,307)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0		0
Other Nonoperating Income (Expense)	21		(19,204)
Income from continuing operations before income taxes	363,214	29,113	395,094	80,036
Income tax (expense) benefit	0	0	0	0
NET INCOME	363,214	29,113	395,094	80,036
Net Income (Loss) Attributable to Noncontrolling Interest	0		0
Net Income (Loss) Attributable to Parent	363,214		395,094
Genesis Energy Finance Corporation (Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Supply And Logistics Revenues	0	0	0	0
Refinery services	0	0	0	0
Marine Transportation Revenues	0	0	0	0
Pipeline transportation services	0	0	0	0
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Total revenues	0	0	0	0
Supply and logistics costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	0	0	0	0
Pipeline transportation 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
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
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0		0
Other Nonoperating Income (Expense)	0		0
Income from continuing operations before income taxes	0	0	0	0
Income tax (expense) benefit	0	0	0	0
NET INCOME	0	0	0	0
Net Income (Loss) Attributable to Noncontrolling Interest	0		0
Net Income (Loss) Attributable to Parent	0		0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Supply And Logistics Revenues	387,169	834,583	1,317,891	2,606,004
Refinery services	42,464	52,047	133,055	155,470
Marine Transportation Revenues	60,536	57,000	180,501	169,241
Pipeline transportation services	14,130	14,451	39,874	44,459
Offshore Pipeline Transportation Services Revenues	59,695	974	61,743	2,443
Total revenues	563,994	959,055	1,733,064	2,977,617
Supply and logistics costs	378,916	818,845	1,290,980	2,567,594
Marine Transportation Operating Costs	33,869	34,864	100,749	107,543
Refinery services operating costs	21,758	29,331	73,058	91,322
Pipeline transportation operating costs	6,533	6,917	19,345	21,461
Offshore Pipeline Transportation Operating Costs	17,188	76	17,831	941
General and administrative	26,799	13,765	54,852	40,471
Depreciation and amortization	40,320	24,508	94,365	63,019
Total costs and expenses	525,383	928,306	1,651,180	2,892,351
OPERATING INCOME	38,611	30,749	81,884	85,266
Equity in earnings of subsidiaries	2,284	1,479	5,770	5,051
Equity in earnings of equity investees	14,260	15,017	48,440	27,757
Interest Income (Expense), Net	3,728	3,900	11,329	11,798
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	335,260		335,260
Other Nonoperating Income (Expense)	(21)		1,675
Income from continuing operations before income taxes	394,122	51,145	484,358	129,872
Income tax (expense) benefit	(1,341)	(985)	(3,275)	(2,462)
NET INCOME	392,781	50,160	481,083	127,410
Net Income (Loss) Attributable to Noncontrolling Interest	0		0
Net Income (Loss) Attributable to Parent	392,781		481,083
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Supply And Logistics Revenues	0	0	0	0
Refinery services	2,608	2,192	10,579	12,838
Marine Transportation Revenues	0	0	0	0
Pipeline transportation services	5,779	5,898	18,036	18,533
Offshore Pipeline Transportation Services Revenues	1,693	0	1,693	0
Total revenues	10,080	8,090	30,308	31,371
Supply and logistics costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	2,376	2,167	10,021	12,225
Pipeline transportation operating costs	188	0	529	652
Offshore Pipeline Transportation Operating Costs	510	200	510	0
General and administrative	0	0	0	0
Depreciation and amortization	850	640	2,135	1,900
Total costs and expenses	3,924	3,007	13,195	14,777
OPERATING INCOME	6,156	5,083	17,113	16,594
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	(3,769)	(3,904)	(11,411)	(11,805)
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0		0
Other Nonoperating Income (Expense)	0		0
Income from continuing operations before income taxes	2,387	1,179	5,702	4,789
Income tax (expense) benefit	49	254	133	128
NET INCOME	2,436	1,433	5,835	4,917
Net Income (Loss) Attributable to Noncontrolling Interest	(195)		(195)
Net Income (Loss) Attributable to Parent	2,241		5,640
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Supply And Logistics Revenues	0	0	0	0
Refinery services	(1,740)	(3,031)	(7,854)	(10,106)
Marine Transportation Revenues	0	0	0	0
Pipeline transportation services	0	0	0	0
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Total revenues	(1,740)	(3,031)	(7,854)	(10,106)
Supply and logistics costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	(1,771)	(2,467)	(7,854)	(10,173)
Pipeline transportation 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
Total costs and expenses	(1,771)	(2,467)	(7,854)	(10,173)
OPERATING INCOME	31	(564)	0	67
Equity in earnings of subsidiaries	(395,053)	(51,029)	(486,723)	(132,394)
Equity in earnings of equity investees	0	0	0	0
Interest Income (Expense), Net	0	0	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0		0
Other Nonoperating Income (Expense)	0		0
Income from continuing operations before income taxes	(395,022)	(51,593)	(486,723)	(132,327)
Income tax (expense) benefit	0	0	0	0
NET INCOME	(395,022)	$ (51,593)	(486,723)	$ (132,327)
Net Income (Loss) Attributable to Noncontrolling Interest	0		0
Net Income (Loss) Attributable to Parent	$ (395,022)		$ (486,723)