Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 10,895	$ 9,462	$ 8,866	$ 11,282
Other current assets	295,421	345,904
Total current assets	306,316	355,366
FIXED ASSETS, at cost	4,310,226	1,899,058
Less: Accumulated depreciation	(378,247)	(268,057)
Net fixed assets	3,931,979	1,631,001
GOODWILL	325,046	325,046
Other assets, net	421,866	270,431
Advances to Affiliate	0	0
Equity investees and other investments	474,392	628,780
Investments in subsidiaries	0	0
TOTAL ASSETS	5,459,599	3,210,624	2,848,528
Current liabilities	302,136	363,145
Senior secured credit facility	1,115,000	550,400
SENIOR UNSECURED NOTES, net of debt issuance costs	1,807,054	1,030,889
Deferred tax liabilities	22,586	18,754
Due to Affiliate	0	0
OTHER LONG-TERM LIABILITIES	192,072	18,233
Total liabilities	3,438,848	1,981,421
Partners' capital	2,029,101	1,229,203
Noncontrolling interests	(8,350)	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	5,459,599	3,210,624
Genesis Energy, L.P. (Parent and Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	6	9	20	10
Other current assets	50	53
Total current assets	56	62
FIXED ASSETS, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
GOODWILL	0	0
Other assets, net	13,140	8,671
Advances to Affiliate	2,619,493	1,378,520
Equity investees and other investments	0	0
Investments in subsidiaries	2,353,804	1,434,255
TOTAL ASSETS	4,986,493	2,821,508
Current liabilities	35,338	11,016
Senior secured credit facility	1,115,000	550,400
SENIOR UNSECURED NOTES, net of debt issuance costs	1,807,054	1,030,889
Deferred tax liabilities	0	0
Due to Affiliate	0	0
OTHER LONG-TERM LIABILITIES	0	0
Total liabilities	2,957,392	1,592,305
Partners' capital	2,029,101	1,229,203
Noncontrolling interests	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	4,986,493	2,821,508
Genesis Energy Finance Corporation (Co-Issuer)
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 Affiliate	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 facility	0	0
SENIOR UNSECURED NOTES, net of debt issuance costs	0	0
Deferred tax liabilities	0	0
Due to Affiliate	0	0
OTHER LONG-TERM LIABILITIES	0	0
Total liabilities	0	0
Partners' capital	0	0
Noncontrolling interests	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	0	0
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	8,288	8,310	8,050	11,104
Other current assets	285,313	333,385
Total current assets	293,601	341,695
FIXED ASSETS, at cost	4,232,641	1,823,556
Less: Accumulated depreciation	(356,530)	(251,171)
Net fixed assets	3,876,111	1,572,385
GOODWILL	325,046	325,046
Other assets, net	394,294	269,252
Advances to Affiliate	0	0
Equity investees and other investments	474,392	628,780
Investments in subsidiaries	90,741	97,195
TOTAL ASSETS	5,454,185	3,234,353
Current liabilities	267,294	395,159
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES, net of debt issuance costs	0	0
Deferred tax liabilities	22,586	18,754
Due to Affiliate	2,666,527	1,366,697
OTHER LONG-TERM LIABILITIES	150,877	18,233
Total liabilities	3,107,284	1,798,843
Partners' capital	2,346,901	1,435,510
Noncontrolling interests	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	5,454,185	3,234,353
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	2,601	1,143	796	168
Other current assets	10,422	12,474
Total current assets	13,023	13,617
FIXED ASSETS, at cost	77,585	75,502
Less: Accumulated depreciation	(21,717)	(16,886)
Net fixed assets	55,868	58,616
GOODWILL	0	0
Other assets, net	140,409	146,700
Advances to Affiliate	47,034	0
Equity investees and other investments	0	0
Investments in subsidiaries	0	0
TOTAL ASSETS	256,334	218,933
Current liabilities	0	499
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES, net of debt issuance costs	0	0
Deferred tax liabilities	0	0
Due to Affiliate	0	11,823
OTHER LONG-TERM LIABILITIES	167,006	110,663
Total liabilities	167,006	122,985
Partners' capital	97,678	95,948
Noncontrolling interests	(8,350)
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	256,334	218,933
Eliminations
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	0	0	$ 0	$ 0
Other current assets	(364)	(8)
Total current assets	(364)	(8)
FIXED ASSETS, at cost	0	0
Less: Accumulated depreciation	0	0
Net fixed assets	0	0
GOODWILL	0	0
Other assets, net	(125,977)	(154,192)
Advances to Affiliate	(2,666,527)	(1,378,520)
Equity investees and other investments	0	0
Investments in subsidiaries	(2,444,545)	(1,531,450)
TOTAL ASSETS	(5,237,413)	(3,064,170)
Current liabilities	(496)	(43,529)
Senior secured credit facility	0	0
SENIOR UNSECURED NOTES, net of debt issuance costs	0	0
Deferred tax liabilities	0	0
Due to Affiliate	(2,666,527)	(1,378,520)
OTHER LONG-TERM LIABILITIES	(125,811)	(110,663)
Total liabilities	(2,792,834)	(1,532,712)
Partners' capital	(2,444,579)	(1,531,458)
Noncontrolling interests	0
TOTAL LIABILITIES AND PARTNERS’ CAPITAL	$ (5,237,413)	$ (3,064,170)