Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 19,922	$ (2,105)
Payments to acquire fixed and intangible assets	(47,473)	(5,489)
Cash distributions received from equity investees - return of investment	4,314	2,283
Investments in equity investees	(33,542)	(194)
Acquisitions	(205,576)
Other, net	262	(20)
Net cash used in investing activities	(282,015)	(3,420)
Bank borrowings	509,200	127,600
Bank repayments	(480,300)	(98,100)
Proceeds from issuance of senior unsecured notes, including premium	101,000
Senior unsecured notes issuance costs	(2,584)
Issuance of ownership interests to partners for cash	169,524
Distributions to partners/owners	(31,677)	(25,846)
Other, net	437	264
Net cash provided by financing activities	265,600	3,918
Net increase (decrease) in cash and cash equivalents	3,507	(1,607)
Cash and cash equivalents at beginning of period	10,817	5,762
Cash and cash equivalents at end of period	14,324	4,155
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(110,241)	(29,497)
Cash distributions received from equity investees - return of investment	14,602	25,846
Investments in equity investees	(169,524)
Net cash used in investing activities	(154,922)	25,846
Bank borrowings	509,200	127,600
Bank repayments	(480,300)	(98,100)
Proceeds from issuance of senior unsecured notes, including premium	101,000
Senior unsecured notes issuance costs	(2,584)
Issuance of ownership interests to partners for cash	169,524
Distributions to partners/owners	(31,677)	(25,846)
Net cash provided by financing activities	265,163	3,654
Net increase (decrease) in cash and cash equivalents		3
Cash and cash equivalents at beginning of period	3	1
Cash and cash equivalents at end of period	3	4
Genesis Energy Finance Corporation (Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities
Payments to acquire fixed and intangible assets
Cash distributions received from equity investees - return of investment
Investments in equity investees
Acquisitions
Repayments on loan to non-guarantor subsidiary
Other, net
Net cash used in investing activities
Bank borrowings
Bank repayments
Proceeds from issuance of senior unsecured notes, including premium
Senior unsecured notes issuance costs
Issuance of ownership interests to partners for cash
Distributions to partners/owners
Other, net
Net cash provided by financing activities
Net increase (decrease) in cash and cash equivalents
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	147,523	26,800
Payments to acquire fixed and intangible assets	(47,228)	(5,489)
Cash distributions received from equity investees - return of investment	4,314	2,283
Investments in equity investees	(33,860)	(194)
Acquisitions	(205,576)
Repayments on loan to non-guarantor subsidiary	981	887
Other, net	580	(20)
Net cash used in investing activities	(280,789)	(2,533)
Issuance of ownership interests to partners for cash	169,524
Distributions to partners/owners	(31,677)	(25,846)
Other, net	122	264
Net cash provided by financing activities	137,969	(25,582)
Net increase (decrease) in cash and cash equivalents	4,703	(1,315)
Cash and cash equivalents at beginning of period	9,182	5,082
Cash and cash equivalents at end of period	13,885	3,767
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	3,207	585
Payments to acquire fixed and intangible assets	(245)
Other, net	(318)
Net cash used in investing activities	(563)
Distributions to partners/owners	(3,182)
Other, net	(658)	(880)
Net cash provided by financing activities	(3,840)	(880)
Net increase (decrease) in cash and cash equivalents	(1,196)	(295)
Cash and cash equivalents at beginning of period	1,632	679
Cash and cash equivalents at end of period	436	384
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(20,567)	7
Cash distributions received from equity investees - return of investment	(14,602)	(25,846)
Investments in equity investees	169,842
Repayments on loan to non-guarantor subsidiary	(981)	(887)
Net cash used in investing activities	154,259	(26,733)
Issuance of ownership interests to partners for cash	(169,524)
Distributions to partners/owners	34,859	25,846
Other, net	973	880
Net cash provided by financing activities	$ (133,692)	$ 26,726