Condensed Consolidating Financial Information (Condensed Consolidating Statements Of Cash Flow) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	$ 289,536	$ 291,054	$ 138,386
Payments to acquire fixed and intangible assets	(495,774)	(443,482)	(343,119)
Cash distributions received from equity investees - return of investment	25,645	18,363	12,432
Investments in equity investees	(3,045)	(40,926)	(94,551)
Acquisitions	(1,520,299)	(157,000)	(230,880)
Intercompany transfers	0	0	0
Repayments on loan to non-guarantor subsidiary	0	0	0
Contributions in aid of construction costs	3,179	0	0
Proceeds from Sales of Assets, Investing Activities	2,811	272	1,910
Payments for (Proceeds from) Other Investing Activities	(1,976)	(1,214)	(1,622)
Net cash used in investing activities	(1,989,459)	(623,987)	(655,830)
Borrowings on senior secured credit facility	1,525,050	1,839,900	1,593,300
Repayments on senior secured credit facility	(960,450)	(1,872,300)	(1,510,500)
Proceeds from issuance of senior unsecured notes, including premium	1,139,718	350,000	350,000
Repayment of senior unsecured notes	(350,000)	0	0
Credit facility and senior unsecured notes issuance fees	(28,901)	(11,896)	(8,157)
Increase (Decrease) Due from Affiliates	0	0	0
Payments of Distributions To Common Unitholders	(256,389)	(200,461)	(168,441)
Distributions to noncontrolling interests	(960)	0	0
Issuance of common units for cash, net	633,759	225,725	263,574
Other, net	471	(2,561)	4,748
Net cash provided by financing activities	1,701,356	333,529	515,028
Net increase in cash and cash equivalents	1,433	596	(2,416)
Cash and cash equivalents at beginning of period	9,462	8,866	11,282
Cash and cash equivalents at end of period	10,895	9,462	8,866
Genesis Energy, L.P. (Parent and Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(14,082)	96,868	107,951
Payments to acquire fixed and intangible assets	0	0	0
Cash distributions received from equity investees - return of investment	186,026	42,755	23,963
Investments in equity investees	(633,761)	(225,725)	(263,574)
Acquisitions	0	0	0
Intercompany transfers	(1,240,973)	(244,876)	(388,106)
Repayments on loan to non-guarantor subsidiary	0	0	0
Contributions in aid of construction costs	0
Proceeds from Sales of Assets, Investing Activities	0	0	0
Payments for (Proceeds from) Other Investing Activities	0	0	0
Net cash used in investing activities	(1,688,708)	(427,846)	(627,717)
Borrowings on senior secured credit facility	1,525,050	1,839,900	1,593,300
Repayments on senior secured credit facility	(960,450)	(1,872,300)	(1,510,500)
Proceeds from issuance of senior unsecured notes, including premium	1,139,718	350,000	350,000
Repayment of senior unsecured notes	(350,000)
Credit facility and senior unsecured notes issuance fees	(28,901)	(11,896)	(8,157)
Increase (Decrease) Due from Affiliates	0	0	0
Payments of Distributions To Common Unitholders	(256,389)	(200,462)	(168,441)
Distributions to noncontrolling interests	0
Issuance of common units for cash, net	633,759	225,725	263,574
Other, net	0	0	0
Net cash provided by financing activities	1,702,787	330,967	519,776
Net increase in cash and cash equivalents	(3)	(11)	10
Cash and cash equivalents at beginning of period	9	20	10
Cash and cash equivalents at end of period	6	9	20
Genesis Energy Finance Corporation (Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	0	0	0
Payments to acquire fixed and intangible assets	0	0	0
Cash distributions received from equity investees - return of investment	0	0	0
Investments in equity investees	0	0	0
Acquisitions	0	0	0
Intercompany transfers	0	0	0
Repayments on loan to non-guarantor subsidiary	0	0	0
Contributions in aid of construction costs	0
Proceeds from Sales of Assets, Investing Activities	0	0	0
Payments for (Proceeds from) Other Investing Activities	0	0	0
Net cash used in investing activities	0	0	0
Borrowings on senior secured credit facility	0	0	0
Repayments on senior secured credit facility	0	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0	0
Repayment of senior unsecured notes	0
Credit facility and senior unsecured notes issuance fees	0	0	0
Increase (Decrease) Due from Affiliates	0	0	0
Payments of Distributions To Common Unitholders	0	0	0
Distributions to noncontrolling interests	0
Issuance of common units for cash, net	0	0	0
Other, net	0	0	0
Net cash provided by financing activities	0	0	0
Net increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	0	0	0
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	308,144	317,520	139,027
Payments to acquire fixed and intangible assets	(495,774)	(443,482)	(343,119)
Cash distributions received from equity investees - return of investment	25,645	18,363	12,432
Investments in equity investees	(3,045)	(40,926)	(94,551)
Acquisitions	(1,520,299)	(157,000)	(230,880)
Intercompany transfers	0	0	0
Repayments on loan to non-guarantor subsidiary	5,524	4,993	4,512
Contributions in aid of construction costs	3,179
Proceeds from Sales of Assets, Investing Activities	2,811	272	1,910
Payments for (Proceeds from) Other Investing Activities	(1,976)	(1,214)	(1,622)
Net cash used in investing activities	(1,983,935)	(618,994)	(651,318)
Borrowings on senior secured credit facility	0	0	0
Repayments on senior secured credit facility	0	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0	0
Repayment of senior unsecured notes	0
Credit facility and senior unsecured notes issuance fees	0	0	0
Increase (Decrease) Due from Affiliates	1,299,830	273,911	418,852
Payments of Distributions To Common Unitholders	(256,389)	(200,462)	(168,441)
Distributions to noncontrolling interests	(960)
Issuance of common units for cash, net	633,759	225,725	263,574
Other, net	471	(2,560)	4,748
Net cash provided by financing activities	1,675,769	301,734	509,237
Net increase in cash and cash equivalents	(22)	260	(3,054)
Cash and cash equivalents at beginning of period	8,310	8,050	11,104
Cash and cash equivalents at end of period	8,288	8,310	8,050
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	45,125	34,331	35,847
Payments to acquire fixed and intangible assets	0	0	0
Cash distributions received from equity investees - return of investment	0	0	0
Investments in equity investees	0	0	0
Acquisitions	0	0	0
Intercompany transfers	0	0	0
Repayments on loan to non-guarantor subsidiary	0	0	0
Contributions in aid of construction costs	0
Proceeds from Sales of Assets, Investing Activities	0	0	0
Payments for (Proceeds from) Other Investing Activities	0	0	0
Net cash used in investing activities	0	0	0
Borrowings on senior secured credit facility	0	0	0
Repayments on senior secured credit facility	0	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0	0
Repayment of senior unsecured notes	0
Credit facility and senior unsecured notes issuance fees	0	0	0
Increase (Decrease) Due from Affiliates	(58,857)	(29,035)	(30,746)
Payments of Distributions To Common Unitholders	0	0	0
Distributions to noncontrolling interests	0
Issuance of common units for cash, net	0	0	0
Other, net	(15,190)	4,949	4,473
Net cash provided by financing activities	(43,667)	(33,984)	(35,219)
Net increase in cash and cash equivalents	1,458	347	628
Cash and cash equivalents at beginning of period	1,143	796	168
Cash and cash equivalents at end of period	2,601	1,143	796
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by operating activities	(49,651)	(157,665)	(144,439)
Payments to acquire fixed and intangible assets	0	0	0
Cash distributions received from equity investees - return of investment	(186,026)	(42,755)	(23,963)
Investments in equity investees	633,761	225,725	263,574
Acquisitions	0	0	0
Intercompany transfers	1,240,973	244,876	388,106
Repayments on loan to non-guarantor subsidiary	(5,524)	(4,993)	(4,512)
Contributions in aid of construction costs	0
Proceeds from Sales of Assets, Investing Activities	0	0	0
Payments for (Proceeds from) Other Investing Activities	0	0	0
Net cash used in investing activities	1,683,184	422,853	623,205
Borrowings on senior secured credit facility	0	0	0
Repayments on senior secured credit facility	0	0	0
Proceeds from issuance of senior unsecured notes, including premium	0	0	0
Repayment of senior unsecured notes	0
Credit facility and senior unsecured notes issuance fees	0	0	0
Increase (Decrease) Due from Affiliates	(1,240,973)	(244,876)	(388,106)
Payments of Distributions To Common Unitholders	256,389	200,463	168,441
Distributions to noncontrolling interests	0
Issuance of common units for cash, net	(633,759)	(225,725)	(263,574)
Other, net	15,190	(4,950)	(4,473)
Net cash provided by financing activities	(1,633,533)	(265,188)	(478,766)
Net increase in cash and cash equivalents	0	0	0
Cash and cash equivalents at beginning of period	0	0	0
Cash and cash equivalents at end of period	$ 0	$ 0	$ 0