Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Offshore pipeline transportation services									$ 334,679	$ 140,230	$ 3,296
Refinery services									171,503	177,880	207,401
Marine transportation									213,021	238,757	229,282
Supply and logistics									993,290	1,689,662	3,406,185
Total revenues	$ 428,053	$ 460,050	$ 445,976	$ 378,414	$ 491,011	$ 572,334	$ 656,327	$ 526,857	1,712,493	2,246,529	3,846,164
Supply and logistics costs									924,627	1,602,808	3,306,548
Marine transportation operating costs									142,551	135,200	142,793
Refinery services operating costs									91,443	96,806	121,401
Offshore pipeline transportation operating costs									79,624	39,713	1,271
General and administrative									45,625	64,995	50,692
Depreciation and amortization									222,196	150,140	90,908
Total costs and expenses									1,506,066	2,089,662	3,713,613
OPERATING INCOME	43,412	55,179	47,988	59,848	57,870	44,798	29,380	24,819	206,427	156,867	132,551
Equity in earnings of equity investees									47,944	54,450	43,135
Equity in earnings of subsidiaries									0	0	0
Interest expense									(139,947)	(100,596)	(66,639)
Gain on basis step up on historical interest									0	332,380	0
Other income/(expense), net									0	(17,529)	0
Income from operations before income taxes									114,424	425,572	109,047
Income tax expense									(3,342)	(3,987)	(2,845)
Income from continuing operations									111,082	421,585	106,202
Net loss attributable to noncontrolling interest	(1,797)	(118)	(126)	(126)	(1,138)	195	0	0	2,167	943	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	$ 22,118	$ 32,101	$ 23,727	$ 35,303	$ 27,434	$ 363,214	$ 11,665	$ 20,215	113,249	422,528	106,202
Eliminations
Condensed Financial Statements, Captions [Line Items]
Offshore pipeline transportation services									0	0	0
Refinery services									(7,759)	(9,194)	(13,138)
Marine transportation									0	0	0
Supply and logistics									0	0	0
Total revenues									(7,759)	(9,194)	(13,138)
Supply and logistics costs									0	0	0
Marine transportation operating costs									0	0	0
Refinery services operating costs									(7,759)	(9,194)	(13,780)
Offshore pipeline transportation operating costs									0	0	0
General and administrative									0	0	0
Depreciation and amortization									0	0	0
Total costs and expenses									(7,759)	(9,194)	(13,780)
OPERATING INCOME									0	0	642
Equity in earnings of equity investees									0	0	0
Equity in earnings of subsidiaries									(246,304)	(544,279)	(179,780)
Interest expense									0	0	0
Gain on basis step up on historical interest										0
Other income/(expense), net										0
Income from operations before income taxes									(246,304)	(544,279)	(179,138)
Income tax expense									0	0	0
Income from continuing operations									(246,304)	(544,279)	(179,138)
Net loss attributable to noncontrolling interest									0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.									(246,304)	(544,279)
Genesis Energy, L.P. (Parent and Co-Issuer) | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Offshore pipeline transportation services									0	0	0
Refinery services									0	0	0
Marine transportation									0	0	0
Supply and logistics									0	0	0
Total revenues									0	0	0
Supply and logistics costs									0	0	0
Marine transportation operating costs									0	0	0
Refinery services operating costs									0	0	0
Offshore pipeline transportation operating costs									0	0	0
General and administrative									0	0	0
Depreciation and amortization									0	0	0
Total costs and expenses									0	0	0
OPERATING INCOME									0	0	0
Equity in earnings of equity investees									0	0	0
Equity in earnings of subsidiaries									253,048	542,226	172,828
Interest expense									(139,799)	(100,494)	(66,626)
Gain on basis step up on historical interest										0
Other income/(expense), net										(19,204)
Income from operations before income taxes									113,249	422,528	106,202
Income tax expense									0	0	0
Income from continuing operations									113,249	422,528	106,202
Net loss attributable to noncontrolling interest									0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.									113,249	422,528
Genesis Energy Finance Corporation (Co-Issuer) | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Offshore pipeline transportation services									0	0	0
Refinery services									0	0	0
Marine transportation									0	0	0
Supply and logistics									0	0	0
Total revenues									0	0	0
Supply and logistics costs									0	0	0
Marine transportation operating costs									0	0	0
Refinery services operating costs									0	0	0
Offshore pipeline transportation operating costs									0	0	0
General and administrative									0	0	0
Depreciation and amortization									0	0	0
Total costs and expenses									0	0	0
OPERATING INCOME									0	0	0
Equity in earnings of equity investees									0	0	0
Equity in earnings of subsidiaries									0	0	0
Interest expense									0	0	0
Gain on basis step up on historical interest										0
Other income/(expense), net										0
Income from operations before income taxes									0	0	0
Income tax expense									0	0	0
Income from continuing operations									0	0	0
Net loss attributable to noncontrolling interest									0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.									0	0
Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Offshore pipeline transportation services									334,679	137,681	3,296
Refinery services									171,389	175,132	202,250
Marine transportation									213,021	238,757	229,282
Supply and logistics									972,794	1,665,917	3,381,419
Total revenues									1,691,883	2,217,487	3,816,247
Supply and logistics costs									923,567	1,601,972	3,305,691
Marine transportation operating costs									142,551	135,200	142,793
Refinery services operating costs									90,711	94,241	117,788
Offshore pipeline transportation operating costs									68,791	38,459	1,271
General and administrative									45,625	64,995	50,692
Depreciation and amortization									219,696	141,785	88,368
Total costs and expenses									1,490,941	2,076,652	3,706,603
OPERATING INCOME									200,942	140,835	109,644
Equity in earnings of equity investees									47,944	54,450	43,135
Equity in earnings of subsidiaries									(6,744)	2,053	6,952
Interest expense									14,407	15,042	15,662
Gain on basis step up on historical interest										332,380
Other income/(expense), net										1,675
Income from operations before income taxes									256,549	546,435	175,393
Income tax expense									(3,337)	(4,036)	(3,030)
Income from continuing operations									253,212	542,399	172,363
Net loss attributable to noncontrolling interest									0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.									253,212	542,399
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Offshore pipeline transportation services									0	2,549	0
Refinery services									7,873	11,942	18,289
Marine transportation									0	0	0
Supply and logistics									20,496	23,745	24,766
Total revenues									28,369	38,236	43,055
Supply and logistics costs									1,060	836	857
Marine transportation operating costs									0	0	0
Refinery services operating costs									8,491	11,759	17,393
Offshore pipeline transportation operating costs									10,833	1,254	0
General and administrative									0	0	0
Depreciation and amortization									2,500	8,355	2,540
Total costs and expenses									22,884	22,204	20,790
OPERATING INCOME									5,485	16,032	22,265
Equity in earnings of equity investees									0	0	0
Equity in earnings of subsidiaries									0	0	0
Interest expense									(14,555)	(15,144)	(15,675)
Gain on basis step up on historical interest										0
Other income/(expense), net										0
Income from operations before income taxes									(9,070)	888	6,590
Income tax expense									(5)	49	185
Income from continuing operations									(9,075)	937	$ 6,775
Net loss attributable to noncontrolling interest									2,167	943
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.									$ (6,908)	$ 1,880