Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 71,102	$ 105,197
Payments to acquire fixed and intangible assets	(240,646)	(240,994)
Cash distributions received from equity investees - return of investment	11,490	6,173
Investments in equity investees	(1,750)	(14,826)
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from asset sales	2,228	133
Other, net	(729)	(2,635)
Net cash used in investing activities	(229,407)	(252,149)
Borrowings on senior secured credit facility	550,500	1,181,200
Repayments on senior secured credit facility	(515,700)	(1,271,800)
Proceeds from issuance of senior unsecured notes, including premium	400,000	350,000
Repayments of Unsecured Debt	(350,000)	0
Debt issuance costs	(8,418)	(10,752)
Proceeds from Issuance of Common Limited Partners Units	197,722	0
Distributions to partners/owners	(117,316)	(96,236)
Other, net	774	0
Net cash provided by financing activities	157,562	152,412
Net increase in cash and cash equivalents	(743)	5,460
Cash and cash equivalents at beginning of period	9,462	8,866
Cash and cash equivalents at end of period	8,719	14,326
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(30,856)	(175,807)
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	71,787	23,385
Investments in equity investees	(197,722)	0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	(125,935)	23,385
Borrowings on senior secured credit facility	550,500	1,181,200
Repayments on senior secured credit facility	(515,700)	(1,271,800)
Proceeds from issuance of senior unsecured notes, including premium	400,000	350,000
Repayments of Unsecured Debt	350,000
Debt issuance costs	(8,418)	(10,752)
Proceeds from Issuance of Common Limited Partners Units	197,722	0
Distributions to partners/owners	(117,316)	(96,236)
Other, net	0	0
Net cash provided by financing activities	156,788	152,412
Net increase in cash and cash equivalents	(3)	(10)
Cash and cash equivalents at beginning of period	9	20
Cash and cash equivalents at end of period	6	10
Genesis Energy Finance Corporation (Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	0
Investments in equity investees	0	0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	0	0
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0
Repayments of Unsecured Debt	0
Debt issuance costs	0	0
Proceeds from Issuance of Common Limited Partners Units	0	0
Distributions to partners/owners	0	0
Other, net	0	0
Net cash provided by financing activities	0	0
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	145,231	351,163
Payments to acquire fixed and intangible assets	(240,646)	(240,994)
Cash distributions received from equity investees - return of investment	11,490	6,173
Investments in equity investees	(1,750)	(14,826)
Repayments on loan to non-guarantor subsidiary	2,692	2,433
Proceeds from asset sales	2,228	133
Other, net	(729)	(2,635)
Net cash used in investing activities	(226,715)	(249,716)
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0
Repayments of Unsecured Debt	0
Debt issuance costs	0	0
Proceeds from Issuance of Common Limited Partners Units	197,722	0
Distributions to partners/owners	(117,316)	(96,236)
Other, net	774	0
Net cash provided by financing activities	81,180	(96,236)
Net increase in cash and cash equivalents	(304)	5,211
Cash and cash equivalents at beginning of period	8,310	8,050
Cash and cash equivalents at end of period	8,006	13,261
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	2,233	2,672
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	0
Investments in equity investees	0	0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	0	0
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0
Repayments of Unsecured Debt	0
Debt issuance costs	0	0
Proceeds from Issuance of Common Limited Partners Units	0	0
Distributions to partners/owners	0	0
Other, net	(2,669)	(2,413)
Net cash provided by financing activities	(2,669)	(2,413)
Net increase in cash and cash equivalents	(436)	259
Cash and cash equivalents at beginning of period	1,143	796
Cash and cash equivalents at end of period	707	1,055
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(45,506)	(72,831)
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	(71,787)	(23,385)
Investments in equity investees	197,722	0
Repayments on loan to non-guarantor subsidiary	(2,692)	(2,433)
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	123,243	(25,818)
Borrowings on senior secured credit facility	0	0
Repayments on senior secured credit facility	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0
Repayments of Unsecured Debt	0
Debt issuance costs	0	0
Proceeds from Issuance of Common Limited Partners Units	(197,722)	0
Distributions to partners/owners	117,316	96,236
Other, net	2,669	2,413
Net cash provided by financing activities	(77,737)	98,649
Net increase in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0