Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Cash Flows) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ 99,279	$ 9,422
Payments to acquire fixed and intangible assets	(80,378)	(9,328)
Cash distributions received from equity investees - return of investment	7,309	6,096
Investments in equity investees	(51,431)	(194)
Acquisitions	(205,576)	0
Repayments on loan to non-guarantor subsidiary	0	0
Other, net	(261)	1,041
Net cash used in investing activities	(330,337)	(2,385)
Borrowings on senior secured credit facility	700,700	267,900
Repayments on senior secured credit facility	(665,000)	(221,900)
Proceeds from issuance of senior unsecured notes, including premium	101,000	0
Senior unsecured notes issuance costs	(2,690)	0
Issuance of ownership interests to partners for cash	169,421	0
Distributions to partners/owners	(67,445)	(52,189)
Other, net	(703)	(1,176)
Net cash provided by (used in) financing activities	235,283	(7,365)
Net increase (decrease) in cash and cash equivalents	4,225	(328)
Cash and cash equivalents at beginning of period	10,817	5,762
Cash and cash equivalents at end of period	15,042	5,434
Genesis Energy, L.P. (Parent And Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(86,721)	(45,998)
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	20,155	52,189
Investments in equity investees	(169,421)	0
Acquisitions	0
Repayments on loan to non-guarantor subsidiary	0	0
Other, net	0	0
Net cash used in investing activities	(149,266)	52,189
Borrowings on senior secured credit facility	700,700	267,900
Repayments on senior secured credit facility	(665,000)	(221,900)
Proceeds from issuance of senior unsecured notes, including premium	101,000
Senior unsecured notes issuance costs	(2,690)
Issuance of ownership interests to partners for cash	169,421
Distributions to partners/owners	(67,445)	(52,189)
Other, net	0	0
Net cash provided by (used in) financing activities	235,986	(6,189)
Net increase (decrease) in cash and cash equivalents	(1)	2
Cash and cash equivalents at beginning of period	3	1
Cash and cash equivalents at end of period	2	3
Genesis Energy Finance Corporation (Co-Issuer) [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) 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
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
Senior unsecured notes issuance costs	0
Issuance of ownership interests to partners for cash	0
Distributions to partners/owners	0	0
Other, net	0	0
Net cash provided by (used in) financing activities	0	0
Net increase (decrease) 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 (used in) operating activities	231,807	53,434
Payments to acquire fixed and intangible assets	(78,937)	(9,328)
Cash distributions received from equity investees - return of investment	7,309	6,096
Investments in equity investees	(52,226)	(194)
Acquisitions	(205,576)
Repayments on loan to non-guarantor subsidiary	1,987	1,796
Other, net	534	1,041
Net cash used in investing activities	(326,909)	(589)
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
Senior unsecured notes issuance costs	0
Issuance of ownership interests to partners for cash	169,421
Distributions to partners/owners	(67,445)	(52,189)
Other, net	(1,403)	(1,176)
Net cash provided by (used in) financing activities	100,573	(53,365)
Net increase (decrease) in cash and cash equivalents	5,471	(520)
Cash and cash equivalents at beginning of period	9,182	5,082
Cash and cash equivalents at end of period	14,653	4,562
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	10,216	1,971
Payments to acquire fixed and intangible assets	(1,441)	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
Other, net	(795)	0
Net cash used in investing activities	(2,236)	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
Senior unsecured notes issuance costs	0
Issuance of ownership interests to partners for cash	795
Distributions to partners/owners	(8,750)	0
Other, net	(1,270)	(1,781)
Net cash provided by (used in) financing activities	(9,225)	(1,781)
Net increase (decrease) in cash and cash equivalents	(1,245)	190
Cash and cash equivalents at beginning of period	1,632	679
Cash and cash equivalents at end of period	387	869
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(56,023)	15
Payments to acquire fixed and intangible assets	0	0
Cash distributions received from equity investees - return of investment	(20,155)	(52,189)
Investments in equity investees	170,216	0
Acquisitions	0
Repayments on loan to non-guarantor subsidiary	(1,987)	(1,796)
Other, net	0	0
Net cash used in investing activities	148,074	(53,985)
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
Senior unsecured notes issuance costs	0
Issuance of ownership interests to partners for cash	(170,216)
Distributions to partners/owners	76,195	52,189
Other, net	1,970	1,781
Net cash provided by (used in) financing activities	(92,051)	53,970
Net increase (decrease) 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