Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 16,925	$ 8,866	$ 16,859	$ 11,282
Other current assets	452,382	526,357
Total current assets	469,307	535,223
Fixed Assets, at cost	1,668,131	1,327,974
Less: Accumulated depreciation	(248,145)	(199,230)
Net fixed assets	1,419,986	1,128,744
Goodwill	325,046	325,046
Other assets, net	259,226	252,942
Equity investees	639,047	620,247
Investments in subsidiaries	0	0
TOTAL ASSETS	3,112,612	2,862,202
Current liabilities	433,897	446,553
Senior secured credit facility	335,000	582,800
SENIOR UNSECURED NOTES	1,050,673	700,772
Deferred tax liabilities	17,178	15,944
Other liabilities	18,831	18,396
Total liabilities	1,855,579	1,764,465
Partners' capital	1,257,033	1,097,737
TOTAL LIABILITIES AND PARTNERS' CAPITAL	3,112,612	2,862,202
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	9	20	20	10
Other current assets	1,189,487	1,133,695
Total current assets	1,189,496	1,133,715
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	29,585	21,432
Equity investees	0	0
Investments in subsidiaries	1,442,767	1,236,164
TOTAL ASSETS	2,661,848	2,391,311
Current liabilities	19,142	10,002
Senior secured credit facility	335,000	582,800
SENIOR UNSECURED NOTES	1,050,673	700,772
Deferred tax liabilities	0	0
Other liabilities	0	0
Total liabilities	1,404,815	1,293,574
Partners' capital	1,257,033	1,097,737
TOTAL LIABILITIES AND PARTNERS' CAPITAL	2,661,848	2,391,311
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	16,240	8,061	15,862	11,214
Other current assets	429,295	498,230
Total current assets	445,535	506,291
Fixed Assets, at cost	1,545,752	1,211,356
Less: Accumulated depreciation	(226,936)	(181,905)
Net fixed assets	1,318,816	1,029,451
Goodwill	325,046	325,046
Other assets, net	236,933	238,282
Equity investees	639,047	620,247
Investments in subsidiaries	127,585	124,718
TOTAL ASSETS	3,092,962	2,844,035
Current liabilities	1,616,529	1,576,186
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	17,178	15,944
Other liabilities	15,277	14,664
Total liabilities	1,648,984	1,606,794
Partners' capital	1,443,978	1,237,241
TOTAL LIABILITIES AND PARTNERS' CAPITAL	3,092,962	2,844,035
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	676	785	977	58
Other current assets	55,263	54,199
Total current assets	55,939	54,984
Fixed Assets, at cost	122,379	116,618
Less: Accumulated depreciation	(21,209)	(17,325)
Net fixed assets	101,170	99,293
Goodwill	0	0
Other assets, net	148,196	152,413
Equity investees	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	305,305	306,690
Current liabilities	19,477	19,660
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	158,870	162,739
Total liabilities	178,347	182,399
Partners' capital	126,958	124,291
TOTAL LIABILITIES AND PARTNERS' CAPITAL	305,305	306,690
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	0	0
Other current assets	(1,221,663)	(1,159,767)
Total current assets	(1,221,663)	(1,159,767)
Fixed Assets, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
Goodwill	0	0
Other assets, net	(155,488)	(159,185)
Equity investees	0	0
Investments in subsidiaries	(1,570,352)	(1,360,882)
TOTAL ASSETS	(2,947,503)	(2,679,834)
Current liabilities	(1,221,251)	(1,159,295)
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES	0	0
Deferred tax liabilities	0	0
Other liabilities	(155,316)	(159,007)
Total liabilities	(1,376,567)	(1,318,302)
Partners' capital	(1,570,936)	(1,361,532)
TOTAL LIABILITIES AND PARTNERS' CAPITAL	$ (2,947,503)	$ (2,679,834)