Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 38,816	$ 19,922
Payments to acquire fixed and intangible assets	(47,151)	(47,473)
Cash distributions received from equity investees - return of investment	3,583	4,314
Investments in equity investees	(64,534)	(33,542)
Acquisitions	0	(205,576)
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from asset sales	332	359
Other, net	755	(97)
Net cash used in investing activities	(107,015)	(282,015)
Borrowings on senior secured credit facility	386,400	509,200
Repayments on senior secured credit facility	(615,400)	(480,300)
Proceeds from issuance of senior unsecured notes, including premium	350,000	101,000
Debt issuance costs	(8,157)	(2,584)
Issuance of ownership interests to partners for cash	0	169,524
Distributions to partners/owners	(39,390)	(31,677)
Other, net	(553)	437
Net cash provided by financing activities	72,900	265,600
Net increase in cash and cash equivalents	4,701	3,507
Cash and cash equivalents at beginning of period	11,282	10,817
Cash and cash equivalents at end of period	15,983	14,324
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(73,458)	(110,241)
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	0	14,602
Investments in equity investees	0	(169,524)
Acquisitions		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	(154,922)
Borrowings on senior secured credit facility	386,400	509,200
Repayments on senior secured credit facility	(615,400)	(480,300)
Proceeds from issuance of senior unsecured notes, including premium	350,000	101,000
Debt issuance costs	(8,157)	(2,584)
Issuance of ownership interests to partners for cash		169,524
Distributions to partners/owners	(39,390)	(31,677)
Other, net	0	0
Net cash provided by financing activities	73,453	265,163
Net increase in cash and cash equivalents	(5)	0
Cash and cash equivalents at beginning of period	10	3
Cash and cash equivalents at end of period	5	3
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
Acquisitions		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
Debt issuance costs	0	0
Issuance of ownership interests to partners for cash		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	145,881	147,523
Payments to acquire fixed and intangible assets	(41,950)	(47,228)
Cash distributions received from equity investees - return of investment	3,583	4,314
Investments in equity investees	(64,534)	(33,860)
Acquisitions		(205,576)
Repayments on loan to non-guarantor subsidiary	1,086	981
Proceeds from asset sales	332	359
Other, net	749	221
Net cash used in investing activities	(100,734)	(280,789)
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
Debt issuance costs	0	0
Issuance of ownership interests to partners for cash		169,524
Distributions to partners/owners	(39,390)	(31,677)
Other, net	(1,135)	122
Net cash provided by financing activities	(40,525)	137,969
Net increase in cash and cash equivalents	4,622	4,703
Cash and cash equivalents at beginning of period	11,214	9,182
Cash and cash equivalents at end of period	15,836	13,885
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	9,500	3,207
Payments to acquire fixed and intangible assets	(5,201)	(245)
Cash distributions received from equity investees - return of investment	0	0
Investments in equity investees	0	0
Acquisitions		0
Repayments on loan to non-guarantor subsidiary	0	0
Proceeds from asset sales	0	0
Other, net	6	(318)
Net cash used in investing activities	(5,195)	(563)
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
Debt issuance costs	0	0
Issuance of ownership interests to partners for cash		0
Distributions to partners/owners	(3,727)	(3,182)
Other, net	(494)	(658)
Net cash provided by financing activities	(4,221)	(3,840)
Net increase in cash and cash equivalents	84	(1,196)
Cash and cash equivalents at beginning of period	58	1,632
Cash and cash equivalents at end of period	142	436
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(43,107)	(20,567)
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment		(14,602)
Investments in equity investees		169,842
Acquisitions		0
Repayments on loan to non-guarantor subsidiary	(1,086)	(981)
Proceeds from asset sales	0	0
Other, net	0	0
Net cash used in investing activities	(1,086)	154,259
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
Debt issuance costs	0	0
Issuance of ownership interests to partners for cash		(169,524)
Distributions to partners/owners	43,117	34,859
Other, net	1,076	973
Net cash provided by financing activities	44,193	(133,692)
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