Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	$ 89,717	$ 61,388	$ 244,837	$ 63,436
Pipeline transportation services	13,999	19,909	48,400	57,910
Refinery services	45,725	43,332	129,585	135,780
Marine Transportation Revenues	55,285	60,536	159,930	180,501
Supply And Logistics Revenues	255,324	387,169	701,688	1,317,891
Total revenues	460,050	572,334	1,284,440	1,755,518
Supply and logistics costs	247,702	378,916	675,095	1,290,980
Marine Transportation Operating Costs	38,490	33,869	105,942	100,749
Refinery services operating costs	25,077	22,363	67,641	75,225
Offshore Pipeline Transportation Operating Costs	23,122	17,698	63,732	18,341
Onshore Pipeline Transportation Operating Costs	5,003	6,721	17,499	19,874
General and administrative	11,212	26,799	34,716	54,852
Depreciation and amortization	54,265	41,170	156,800	96,500
Total costs and expenses	404,871	527,536	1,121,425	1,656,521
OPERATING INCOME	55,179	44,798	163,015	98,997
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	12,488	14,260	35,362	48,440
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain	0	335,260	0	335,260
Interest Income (Expense), Net	(34,735)	(29,617)	(104,657)	(66,737)
Other income/(expense), net	0	0	0	(17,529)
Income from continuing operations before income taxes	32,932	364,701	93,720	398,431
Income tax (expense) benefit	(949)	(1,292)	(2,959)	(3,142)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	31,983	363,409	90,761	395,289
Net loss attributable to noncontrolling interest	118	(195)	370	(195)
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	32,101	363,214	91,131	395,094
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
Pipeline transportation services	0	0	0	0
Refinery services	0	0	0	0
Marine Transportation Revenues	0	0	0	0
Supply And Logistics 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
Offshore Pipeline Transportation Operating Costs	0	0	0	0
Onshore 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	66,811	392,769	195,674	480,953
Equity in earnings of equity investees	0	0	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0		0
Interest Income (Expense), Net	(34,710)	(29,576)	(104,543)	(66,655)
Other income/(expense), net	0	21		(19,204)
Income from continuing operations before income taxes	32,101	363,214	91,131	395,094
Income tax (expense) benefit	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	32,101	363,214	91,131	395,094
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	32,101	363,214	91,131	395,094
Reportable Legal Entities | Genesis Energy Finance Corporation (Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Pipeline transportation services	0	0	0	0
Refinery services	0	0	0	0
Marine Transportation Revenues	0	0	0	0
Supply And Logistics 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
Offshore Pipeline Transportation Operating Costs	0	0	0	0
Onshore 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
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0		0
Interest Income (Expense), Net	0	0	0	0
Other income/(expense), net	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 | Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	89,717	59,695	244,837	61,743
Pipeline transportation services	9,002	14,130	32,872	39,874
Refinery services	45,262	42,464	129,671	133,055
Marine Transportation Revenues	55,285	60,536	159,930	180,501
Supply And Logistics Revenues	255,324	387,169	701,688	1,317,891
Total revenues	454,590	563,994	1,268,998	1,733,064
Supply and logistics costs	247,702	378,916	675,095	1,290,980
Marine Transportation Operating Costs	38,490	33,869	105,942	100,749
Refinery services operating costs	24,577	21,758	67,190	73,058
Offshore Pipeline Transportation Operating Costs	22,533	17,188	61,882	17,831
Onshore Pipeline Transportation Operating Costs	4,748	6,533	16,668	19,345
General and administrative	11,212	26,799	34,716	54,852
Depreciation and amortization	53,640	40,320	154,925	94,365
Total costs and expenses	402,902	525,383	1,116,418	1,651,180
OPERATING INCOME	51,688	38,611	152,580	81,884
Equity in earnings of subsidiaries	28	2,284	(50)	5,770
Equity in earnings of equity investees	12,488	14,260	35,362	48,440
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		335,260		335,260
Interest Income (Expense), Net	3,595	3,728	10,861	11,329
Other income/(expense), net	0	(21)		1,675
Income from continuing operations before income taxes	67,799	394,122	198,753	484,358
Income tax (expense) benefit	(949)	(1,341)	(2,956)	(3,275)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	66,850	392,781	195,797	481,083
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	66,850	392,781	195,797	481,083
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	1,693	0	1,693
Pipeline transportation services	4,997	5,779	15,528	18,036
Refinery services	2,981	2,608	5,499	10,579
Marine Transportation Revenues	0	0	0	0
Supply And Logistics Revenues	0	0	0	0
Total revenues	7,978	10,080	21,027	30,308
Supply and logistics costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	3,018	2,376	6,036	10,021
Offshore Pipeline Transportation Operating Costs	589	510	1,850	510
Onshore Pipeline Transportation Operating Costs	255	188	831	529
General and administrative	0	0	0	0
Depreciation and amortization	625	850	1,875	2,135
Total costs and expenses	4,487	3,924	10,592	13,195
OPERATING INCOME	3,491	6,156	10,435	17,113
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	0	0	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0		0
Interest Income (Expense), Net	(3,620)	(3,769)	(10,975)	(11,411)
Other income/(expense), net	0	0		0
Income from continuing operations before income taxes	(129)	2,387	(540)	5,702
Income tax (expense) benefit	0	49	(3)	133
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(129)	2,436	(543)	5,835
Net loss attributable to noncontrolling interest	118	(195)	370	(195)
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	(11)	2,241	(173)	5,640
Eliminations
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0	0	0
Pipeline transportation services	0	0	0	0
Refinery services	(2,518)	(1,740)	(5,585)	(7,854)
Marine Transportation Revenues	0	0	0	0
Supply And Logistics Revenues	0	0	0	0
Total revenues	(2,518)	(1,740)	(5,585)	(7,854)
Supply and logistics costs	0	0	0	0
Marine Transportation Operating Costs	0	0	0	0
Refinery services operating costs	(2,518)	(1,771)	(5,585)	(7,854)
Offshore Pipeline Transportation Operating Costs	0	0	0	0
Onshore 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	(2,518)	(1,771)	(5,585)	(7,854)
OPERATING INCOME	0	31	0	0
Equity in earnings of subsidiaries	(66,839)	(395,053)	(195,624)	(486,723)
Equity in earnings of equity investees	0	0	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0		0
Interest Income (Expense), Net	0	0	0	0
Other income/(expense), net	0	0		0
Income from continuing operations before income taxes	(66,839)	(395,022)	(195,624)	(486,723)
Income tax (expense) benefit	0	0	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(66,839)	(395,022)	(195,624)	(486,723)
Net loss attributable to noncontrolling interest	0	0	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	$ (66,839)	$ (395,022)	$ (195,624)	$ (486,723)