Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 15,042	$ 10,817	$ 5,434	$ 5,762
Other current assets	326,681	365,287
Total current assets	341,723	376,104
Fixed Assets, at cost	652,178	541,138
Less: Accumulated depreciation	(139,926)	(124,213)
Net fixed assets	512,252	416,925
Goodwill	325,046	325,046
Other assets, net	273,433	285,822
Equity investees	547,896	326,947
Investments in subsidiaries	0	0
TOTAL ASSETS	2,000,350	1,730,844
Current liabilities	235,781	249,428
Senior secured credit facility	445,000	409,300
SENIOR UNSECURED NOTES	350,953	250,000
Deferred tax liabilities	12,110	12,549
Other liabilities	23,204	16,929
Total liabilities	1,067,048	938,206
Partners' capital	933,302	792,638
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,000,350	1,730,844
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	2	3	3	1
Other current assets	712,588	597,966
Total current assets	712,590	597,969
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	15,633	14,773
Equity investees	0	0
Investments in subsidiaries	1,003,161	841,725
TOTAL ASSETS	1,731,384	1,454,467
Current liabilities	2,129	2,529
Senior secured credit facility	445,000	409,300
SENIOR UNSECURED NOTES	350,953	250,000
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	798,082	661,829
Partners' capital	933,302	792,638
TOTAL LIABILITIES AND PARTNERS' CAPITAL	1,731,384	1,454,467
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	14,653	9,182	4,562	5,082
Other current assets	306,465	341,131
Total current assets	321,118	350,313
Fixed Assets, at cost	553,860	444,262
Less: Accumulated depreciation	(128,585)	(114,655)
Net fixed assets	425,275	329,607
Goodwill	325,046	325,046
Other assets, net	263,517	276,450
Equity investees	547,896	326,947
Investments in subsidiaries	98,668	96,303
TOTAL ASSETS	1,981,520	1,704,666
Current liabilities	944,407	835,013
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	12,110	12,549
Other liabilities	21,042	14,673
Total liabilities	977,559	862,235
Partners' capital	1,003,961	842,431
TOTAL LIABILITIES AND PARTNERS' CAPITAL	1,981,520	1,704,666
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	387	1,632	869	679
Other current assets	32,011	31,897
Total current assets	32,398	33,529
Fixed Assets, at cost	98,318	96,876
Less: Accumulated depreciation	(11,341)	(9,558)
Net fixed assets	86,977	87,318
Goodwill	0	0
Other assets, net	160,069	162,373
Equity investees	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	279,444	283,220
Current liabilities	13,787	17,562
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	167,763	169,842
Total liabilities	181,550	187,404
Partners' capital	97,894	95,816
TOTAL LIABILITIES AND PARTNERS' CAPITAL	279,444	283,220
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Other current assets	(724,383)	(605,707)
Total current assets	(724,383)	(605,707)
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	(165,786)	(167,774)
Equity investees	0	0
Investments in subsidiaries	(1,101,829)	(938,028)
TOTAL ASSETS	(1,991,998)	(1,711,509)
Current liabilities	(724,542)	(605,676)
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	(165,601)	(167,586)
Total liabilities	(890,143)	(773,262)
Partners' capital	(1,101,855)	(938,247)
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ (1,991,998)	$ (1,711,509)