Condensed Consolidating Financial Information (Condensed Consolidating Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
REVENUES:
Total revenues	$ 621,697	$ 745,278	$ 1,876,491	$ 2,223,474
COSTS AND EXPENSES:
General and administrative	14,999	24,209	40,097	49,412
Depreciation, depletion and amortization	83,522	91,876	240,513	244,811
Gain on sale of assets	0	(3,363)	0	(3,363)
Total costs and expenses	568,910	699,130	1,674,727	2,057,345
OPERATING INCOME	52,787	46,148	201,764	166,129
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	11,830	9,492	39,873	28,388
Interest (expense) income, net	(54,673)	(58,819)	(165,881)	(172,864)
Other expense	7,974	1,828	306	(3,604)
Income (loss) before income taxes	17,918	(1,351)	76,062	18,049
Income tax expense	(111)	(283)	(656)	(914)
NET INCOME (LOSS)	17,807	(1,634)	75,406	17,135
Net income attributable to noncontrolling interest	22	1,311	(1,503)	1,573
Net income attributable to redeemable noncontrolling interests	(272)	0	(272)	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	17,557	(323)	73,631	18,708
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	(18,684)	(17,635)	(55,783)	(51,780)
Net Income (Loss) Available to Common Stockholders, Basic	(1,127)	(17,958)	17,848	(33,072)
Offshore pipeline transportation
REVENUES:
Total revenues	79,738	70,115	236,482	213,344
COSTS AND EXPENSES:
Cost of products and services sold	22,932	17,753	45,507	53,533
Sodium minerals and sulfur services
REVENUES:
Total revenues	277,527	291,722	827,619	876,513
COSTS AND EXPENSES:
Cost of products and services sold	222,304	229,204	660,906	685,219
Marine Transportation
REVENUES:
Total revenues	59,404	56,296	174,760	161,410
COSTS AND EXPENSES:
Cost of products and services sold	44,831	44,195	133,400	126,259
Onshore facilities and transportation
REVENUES:
Total revenues	205,028	327,145	637,630	972,207
COSTS AND EXPENSES:
Cost of products and services sold	180,322	295,256	554,304	901,474
Reportable Legal Entities \| Genesis Energy, L.P. (Parent and Co-Issuer)
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
General and administrative	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Gain on sale of assets				0
Total costs and expenses	0	0	0	0
OPERATING INCOME	0	0	0	0
Equity in earnings of subsidiaries	65,112	57,078	241,506	196,103
Equity in earnings of equity investees	0	0	0	0
Interest (expense) income, net	(55,529)	(59,229)	(168,181)	(173,791)
Other expense	7,974	1,828	306	(3,604)
Income (loss) before income taxes	17,557	(323)	73,631	18,708
Income tax expense	0	0	0	0
NET INCOME (LOSS)	17,557	(323)	73,631	18,708
Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to redeemable noncontrolling interests	0		0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	17,557	(323)	73,631	18,708
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	(18,684)	(17,635)	(55,783)	(51,780)
Net Income (Loss) Available to Common Stockholders, Basic	(1,127)	(17,958)	17,848	(33,072)
Reportable Legal Entities \| Genesis Energy, L.P. (Parent and Co-Issuer) \| Offshore pipeline transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy, L.P. (Parent and Co-Issuer) \| Sodium minerals and sulfur services
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy, L.P. (Parent and Co-Issuer) \| Marine Transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy, L.P. (Parent and Co-Issuer) \| Onshore facilities and transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy Finance Corporation (Co-Issuer)
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
General and administrative	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Gain on sale of assets				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 (expense) income, net	0	0	0	0
Other expense	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Income tax expense	0	0	0	0
NET INCOME (LOSS)	0	0	0	0
Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to redeemable noncontrolling interests	0		0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	0	0	0	0
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic		0	0	0
Reportable Legal Entities \| Genesis Energy Finance Corporation (Co-Issuer) \| Offshore pipeline transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy Finance Corporation (Co-Issuer) \| Sodium minerals and sulfur services
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy Finance Corporation (Co-Issuer) \| Marine Transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Genesis Energy Finance Corporation (Co-Issuer) \| Onshore facilities and transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Guarantor Subsidiaries
REVENUES:
Total revenues	395,983	532,637	1,231,956	1,582,597
COSTS AND EXPENSES:
General and administrative	14,632	23,888	38,954	48,420
Depreciation, depletion and amortization	62,632	70,895	185,332	193,054
Gain on sale of assets				(3,363)
Total costs and expenses	369,514	513,380	1,117,047	1,512,536
OPERATING INCOME	26,469	19,257	114,909	70,061
Equity in earnings of subsidiaries	23,914	25,489	78,226	89,162
Equity in earnings of equity investees	11,830	9,492	39,873	28,388
Interest (expense) income, net	3,041	3,235	9,249	9,843
Other expense	0	0	0	0
Income (loss) before income taxes	65,254	57,473	242,257	197,454
Income tax expense	(119)	(383)	(656)	(1,238)
NET INCOME (LOSS)	65,135	57,090	241,601	196,216
Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to redeemable noncontrolling interests	0		0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	65,135	57,090	241,601	196,216
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic	65,135	57,090	241,601	196,216
Reportable Legal Entities \| Guarantor Subsidiaries \| Offshore pipeline transportation
REVENUES:
Total revenues	79,738	70,115	236,482	213,344
COSTS AND EXPENSES:
Cost of products and services sold	22,819	17,217	53,020	51,688
Reportable Legal Entities \| Guarantor Subsidiaries \| Sodium minerals and sulfur services
REVENUES:
Total revenues	56,140	83,951	196,522	250,225
COSTS AND EXPENSES:
Cost of products and services sold	44,617	65,579	153,052	195,840
Reportable Legal Entities \| Guarantor Subsidiaries \| Marine Transportation
REVENUES:
Total revenues	59,404	56,296	174,760	161,410
COSTS AND EXPENSES:
Cost of products and services sold	44,831	44,195	133,400	126,259
Reportable Legal Entities \| Guarantor Subsidiaries \| Onshore facilities and transportation
REVENUES:
Total revenues	200,701	322,275	624,192	957,618
COSTS AND EXPENSES:
Cost of products and services sold	179,983	294,969	553,289	900,638
Reportable Legal Entities \| Non-Guarantor Subsidiaries
REVENUES:
Total revenues	227,457	216,535	650,757	652,318
COSTS AND EXPENSES:
General and administrative	367	321	1,143	992
Depreciation, depletion and amortization	20,890	20,981	55,181	51,757
Gain on sale of assets				0
Total costs and expenses	201,139	189,644	563,902	556,250
OPERATING INCOME	26,318	26,891	86,855	96,068
Equity in earnings of subsidiaries	0	0	0	0
Equity in earnings of equity investees	0	0	0	0
Interest (expense) income, net	(2,185)	(2,825)	(6,949)	(8,916)
Other expense	0	0	0	0
Income (loss) before income taxes	24,133	24,066	79,906	87,152
Income tax expense	8	100	0	324
NET INCOME (LOSS)	24,141	24,166	79,906	87,476
Net income attributable to noncontrolling interest	22	1,311	(1,503)	1,573
Net income attributable to redeemable noncontrolling interests	(272)		(272)
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	23,891	25,477	78,131	89,049
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic	23,891	25,477	78,131	89,049
Reportable Legal Entities \| Non-Guarantor Subsidiaries \| Offshore pipeline transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	113	536	(7,513)	1,845
Reportable Legal Entities \| Non-Guarantor Subsidiaries \| Sodium minerals and sulfur services
REVENUES:
Total revenues	223,130	211,665	637,319	637,729
COSTS AND EXPENSES:
Cost of products and services sold	179,430	167,519	514,076	500,820
Reportable Legal Entities \| Non-Guarantor Subsidiaries \| Marine Transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Reportable Legal Entities \| Non-Guarantor Subsidiaries \| Onshore facilities and transportation
REVENUES:
Total revenues	4,327	4,870	13,438	14,589
COSTS AND EXPENSES:
Cost of products and services sold	339	287	1,015	836
Eliminations
REVENUES:
Total revenues	(1,743)	(3,894)	(6,222)	(11,441)
COSTS AND EXPENSES:
General and administrative	0	0	0	0
Depreciation, depletion and amortization	0	0	0	0
Gain on sale of assets				0
Total costs and expenses	(1,743)	(3,894)	(6,222)	(11,441)
OPERATING INCOME	0	0	0	0
Equity in earnings of subsidiaries	(89,026)	(82,567)	(319,732)	(285,265)
Equity in earnings of equity investees	0	0	0	0
Interest (expense) income, net	0	0	0	0
Other expense	0	0	0	0
Income (loss) before income taxes	(89,026)	(82,567)	(319,732)	(285,265)
Income tax expense	0	0	0	0
NET INCOME (LOSS)	(89,026)	(82,567)	(319,732)	(285,265)
Net income attributable to noncontrolling interest	0	0	0	0
Net income attributable to redeemable noncontrolling interests	0		0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	(89,026)	(82,567)	(319,732)	(285,265)
Less: Accumulated distributions attributable to Class A Convertible Preferred Units	0	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic	(89,026)	(82,567)	(319,732)	(285,265)
Eliminations \| Offshore pipeline transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Eliminations \| Sodium minerals and sulfur services
REVENUES:
Total revenues	(1,743)	(3,894)	(6,222)	(11,441)
COSTS AND EXPENSES:
Cost of products and services sold	(1,743)	(3,894)	(6,222)	(11,441)
Eliminations \| Marine Transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	0	0	0	0
Eliminations \| Onshore facilities and transportation
REVENUES:
Total revenues	0	0	0	0
COSTS AND EXPENSES:
Cost of products and services sold	$ 0	$ 0	$ 0	$ 0

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