Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2010
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 15,461	$ 10,817	$ 4,376	$ 5,762
Other current assets	411,806	365,287
Total current assets	427,267	376,104
Fixed Assets, at cost	684,663	541,138
Less: Accumulated depreciation	(148,712)	(124,213)
Net fixed assets	535,951	416,925
Goodwill	325,046	325,046
Other assets, net	270,966	285,822
Equity investees	547,925	326,947
Investments in subsidiaries	0	0
TOTAL ASSETS	2,107,155	1,730,844
Current liabilities	318,379	249,428
Senior secured credit facility	483,000	409,300
SENIOR UNSECURED NOTES	350,924	250,000
Deferred tax liabilities	11,598	12,549
Other liabilities	15,321	16,929
Total liabilities	1,179,222	938,206
Partners' capital	927,933	792,638
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,107,155	1,730,844
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	11	3	2	1
Other current assets	744,217	597,966
Total current assets	744,228	597,969
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	19,152	14,773
Equity investees	0	0
Investments in subsidiaries	1,007,650	841,725
TOTAL ASSETS	1,771,030	1,454,467
Current liabilities	9,173	2,529
Senior secured credit facility	483,000	409,300
SENIOR UNSECURED NOTES	350,924	250,000
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	843,097	661,829
Partners' capital	927,933	792,638
TOTAL LIABILITIES AND PARTNERS' CAPITAL	1,771,030	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	14,753	9,182	3,654	5,082
Other current assets	387,772	341,131
Total current assets	402,525	350,313
Fixed Assets, at cost	583,751	444,262
Less: Accumulated depreciation	(136,459)	(114,655)
Net fixed assets	447,292	329,607
Goodwill	325,046	325,046
Other assets, net	257,694	276,450
Equity investees	547,925	326,947
Investments in subsidiaries	100,005	96,303
TOTAL ASSETS	2,080,487	1,704,666
Current liabilities	1,047,542	835,013
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	11,598	12,549
Other liabilities	12,850	14,673
Total liabilities	1,071,990	862,235
Partners' capital	1,008,497	842,431
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,080,487	1,704,666
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	697	1,632	720	679
Other current assets	38,521	31,897
Total current assets	39,218	33,529
Fixed Assets, at cost	100,912	96,876
Less: Accumulated depreciation	(12,253)	(9,558)
Net fixed assets	88,659	87,318
Goodwill	0	0
Other assets, net	158,875	162,373
Equity investees	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	286,752	283,220
Current liabilities	19,987	17,562
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	167,041	169,842
Total liabilities	187,028	187,404
Partners' capital	99,724	95,816
TOTAL LIABILITIES AND PARTNERS' CAPITAL	286,752	283,220
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Other current assets	(758,704)	(605,707)
Total current assets	(758,704)	(605,707)
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	(164,755)	(167,774)
Equity investees	0	0
Investments in subsidiaries	(1,107,655)	(938,028)
TOTAL ASSETS	(2,031,114)	(1,711,509)
Current liabilities	(758,323)	(605,676)
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	(164,570)	(167,586)
Total liabilities	(922,893)	(773,262)
Partners' capital	(1,108,221)	(938,247)
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ (2,031,114)	$ (1,711,509)