Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 7,029	$ 10,895	$ 9,462	$ 8,866
Other current assets	352,540	295,421
Total current assets	359,569	306,316
Fixed assets, at cost	4,763,396	4,310,226
Less: Accumulated depreciation	(548,532)	(378,247)
Net fixed assets	4,214,864	3,931,979
Goodwill	325,046	325,046
Other assets, net	394,357	421,866
Advances to affiliates	0	0
Equity investees and other investments	408,756	474,392
Investments in subsidiaries	0	0
TOTAL ASSETS	5,702,592	5,459,599	3,210,624
Current liabilities	260,803	302,136
Senior secured credit facilities	1,278,200	1,115,000
Senior unsecured notes	1,813,169	1,807,054
Deferred tax liabilities	25,889	22,586
Advances from affiliates	0	0
Other liabilities	204,481	192,072
Total liabilities	3,582,542	3,438,848
Partners’ capital, common units	2,130,331	2,029,101
Noncontrolling interests	(10,281)	(8,350)
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	5,702,592	5,459,599
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Other current assets	(302)	(364)
Total current assets	(302)	(364)
Fixed assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	(140,533)	(125,977)
Advances to affiliates	(2,724,225)	(2,666,527)
Equity investees and other investments	0	0
Investments in subsidiaries	(2,675,617)	(2,444,545)
TOTAL ASSETS	(5,540,677)	(5,237,413)
Current liabilities	(157)	(496)
Senior secured credit facilities	0	0
Senior unsecured notes	0	0
Deferred tax liabilities	0	0
Advances from affiliates	(2,724,224)	(2,666,527)
Other liabilities	(140,377)	(125,811)
Total liabilities	(2,864,758)	(2,792,834)
Partners’ capital, common units	(2,675,919)	(2,444,579)
Noncontrolling interests	0	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	(5,540,677)	(5,237,413)
Genesis Energy, L.P. (Parent and Co-Issuer) | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	6	6	9	20
Other current assets	50	50
Total current assets	56	56
Fixed assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	10,696	13,140
Advances to affiliates	2,650,930	2,619,493
Equity investees and other investments	0	0
Investments in subsidiaries	2,594,882	2,353,804
TOTAL ASSETS	5,256,564	4,986,493
Current liabilities	34,864	35,338
Senior secured credit facilities	1,278,200	1,115,000
Senior unsecured notes	1,813,169	1,807,054
Deferred tax liabilities	0	0
Advances from affiliates	0	0
Other liabilities	0	0
Total liabilities	3,126,233	2,957,392
Partners’ capital, common units	2,130,331	2,029,101
Noncontrolling interests	0	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	5,256,564	4,986,493
Genesis Energy Finance Corporation (Co-Issuer) | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Other current assets	0	0
Total current assets	0	0
Fixed assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	0	0
Advances to affiliates	0	0
Equity investees and other investments	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	0	0
Current liabilities	0	0
Senior secured credit facilities	0	0
Senior unsecured notes	0	0
Deferred tax liabilities	0	0
Advances from affiliates	0	0
Other liabilities	0	0
Total liabilities	0	0
Partners’ capital, common units	0	0
Noncontrolling interests	0	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	0	0
Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	6,360	8,288	8,310	8,050
Other current assets	340,555	285,313
Total current assets	346,915	293,601
Fixed assets, at cost	4,685,811	4,232,641
Less: Accumulated depreciation	(524,315)	(356,530)
Net fixed assets	4,161,496	3,876,111
Goodwill	325,046	325,046
Other assets, net	390,214	394,294
Advances to affiliates	0	0
Equity investees and other investments	408,756	474,392
Investments in subsidiaries	80,735	90,741
TOTAL ASSETS	5,713,162	5,454,185
Current liabilities	211,591	267,294
Senior secured credit facilities	0	0
Senior unsecured notes	0	0
Deferred tax liabilities	25,889	22,586
Advances from affiliates	2,724,224	2,666,527
Other liabilities	165,266	150,877
Total liabilities	3,126,970	3,107,284
Partners’ capital, common units	2,586,192	2,346,901
Noncontrolling interests	0	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	5,713,162	5,454,185
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	663	2,601	$ 1,143	$ 796
Other current assets	12,237	10,422
Total current assets	12,900	13,023
Fixed assets, at cost	77,585	77,585
Less: Accumulated depreciation	(24,217)	(21,717)
Net fixed assets	53,368	55,868
Goodwill	0	0
Other assets, net	133,980	140,409
Advances to affiliates	73,295	47,034
Equity investees and other investments	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	273,543	256,334
Current liabilities	14,505	0
Senior secured credit facilities	0	0
Senior unsecured notes	0	0
Deferred tax liabilities	0	0
Advances from affiliates	0	0
Other liabilities	179,592	167,006
Total liabilities	194,097	167,006
Partners’ capital, common units	89,727	97,678
Noncontrolling interests	(10,281)	(8,350)
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	$ 273,543	$ 256,334