Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 16,859	$ 11,282	$ 15,461	$ 10,817
Other current assets	507,210	392,752
Total current assets	524,069	404,034
Fixed Assets, at cost	1,155,977	723,225
Less: Accumulated depreciation	(186,640)	(157,944)
Net fixed assets	969,337	565,281
Goodwill	325,046	325,046
Other assets, net	256,051	266,068
Equity investees	605,067	549,235
Investments in subsidiaries	0	0
TOTAL ASSETS	2,679,570	2,109,664
Current liabilities	410,205	312,651
Senior secured credit facility	411,300	500,000
SENIOR UNSECURED NOTES	700,804	350,895
Deferred tax liabilities	13,625	13,810
Other liabilities	17,419	15,813
Total liabilities	1,553,353	1,193,169
Partners' capital	1,126,217	916,495
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,679,570	2,109,664
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	20	10	11	3
Other current assets	975,220	745,589
Total current assets	975,240	745,599
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	22,568	17,737
Equity investees	0	0
Investments in subsidiaries	1,252,345	1,006,415
TOTAL ASSETS	2,250,153	1,769,751
Current liabilities	11,832	2,361
Senior secured credit facility	411,300	500,000
SENIOR UNSECURED NOTES	700,804	350,895
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	1,123,936	853,256
Partners' capital	1,126,217	916,495
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,250,153	1,769,751
Genesis Energy Finance Corporation (Co-Issuer) [Member]
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
Equity investees	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	0	0
Current liabilities	0	0
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	0	0
Partners' capital	0	0
TOTAL LIABILITIES AND PARTNERS' CAPITAL	0	0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	15,862	11,214	14,753	9,182
Other current assets	483,258	367,837
Total current assets	499,120	379,051
Fixed Assets, at cost	1,039,675	617,519
Less: Accumulated depreciation	(170,629)	(144,882)
Net fixed assets	869,046	472,637
Goodwill	325,046	325,046
Other assets, net	240,081	254,423
Equity investees	605,067	549,235
Investments in subsidiaries	107,042	102,707
TOTAL ASSETS	2,645,402	2,083,099
Current liabilities	1,364,742	1,048,937
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	13,625	13,810
Other liabilities	13,658	13,044
Total liabilities	1,392,025	1,075,791
Partners' capital	1,253,377	1,007,308
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,645,402	2,083,099
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	977	58	697	1,632
Other current assets	47,888	41,533
Total current assets	48,865	41,591
Fixed Assets, at cost	116,302	105,706
Less: Accumulated depreciation	(16,011)	(13,062)
Net fixed assets	100,291	92,644
Goodwill	0	0
Other assets, net	153,758	157,604
Equity investees	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	302,914	291,839
Current liabilities	32,820	23,567
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	163,938	166,282
Total liabilities	196,758	189,849
Partners' capital	106,156	101,990
TOTAL LIABILITIES AND PARTNERS' CAPITAL	302,914	291,839
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Other current assets	(999,156)	(762,207)
Total current assets	(999,156)	(762,207)
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	(160,356)	(163,696)
Equity investees	0	0
Investments in subsidiaries	(1,359,387)	(1,109,122)
TOTAL ASSETS	(2,518,899)	(2,035,025)
Current liabilities	(999,189)	(762,214)
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	(160,177)	(163,513)
Total liabilities	(1,159,366)	(925,727)
Partners' capital	(1,359,533)	(1,109,298)
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ (2,518,899)	$ (2,035,025)