Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2018		Jan. 01, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 10,300			$ 9,041	$ 7,029	$ 10,895
Other current assets	432,979			626,992
Total current assets	443,279			636,033
Fixed assets, at cost	5,440,858			5,601,015
Less: Accumulated depreciation	(1,023,825)			(734,986)
Net fixed assets	4,417,033			4,866,029
Mineral Leaseholds, net of accumulated depletion	560,481			564,506
Goodwill	301,959			325,046
Other assets, net of amortization	401,234			364,317
Advances to affiliates	0			0
Equity investees	355,085			381,550
Investments in subsidiaries	0			0
TOTAL ASSETS	6,479,071			7,137,481	5,702,592
LIABILITIES AND CAPITAL
Current liabilities	332,834			456,264
Senior secured credit facility	970,100			1,099,200
Senior unsecured notes, net of debt issuance costs	2,462,363			2,598,918
Deferred tax liabilities	12,576			11,913
Advances from affiliates	0			0
Other liabilities	259,198		$ 276,435	256,571
Total liabilities	4,037,071			4,422,866
Mezzanine Capital:
Class A Convertible Preferred Units	761,466			697,151
Partners’ capital, common units	1,690,799		$ 2,022,597	2,026,147
Accumulated other comprehensive income (loss)	939	[1]		(604)
Noncontrolling interests	(11,204)			(8,079)
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	6,479,071			7,137,481
Reportable Legal Entities | Genesis Energy Finance Corporation (Co-Issuer)
ASSETS
Cash and cash equivalents	0			0	0	0
Other current assets	0			0
Total current assets	0			0
Fixed assets, at cost	0			0
Less: Accumulated depreciation	0			0
Net fixed assets	0			0
Mineral Leaseholds, net of accumulated depletion	0			0
Goodwill	0			0
Other assets, net of amortization	0			0
Advances to affiliates	0			0
Equity investees	0			0
Investments in subsidiaries	0			0
TOTAL ASSETS	0			0
LIABILITIES AND CAPITAL
Current liabilities	0			0
Senior secured credit facility	0			0
Senior unsecured notes, net of debt issuance costs	0			0
Deferred tax liabilities	0			0
Advances from affiliates	0			0
Other liabilities	0			0
Total liabilities	0			0
Mezzanine Capital:
Class A Convertible Preferred Units	0			0
Partners’ capital, common units	0			0
Accumulated other comprehensive income (loss)	0	[1]		0
Noncontrolling interests	0			0
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	0			0
Reportable Legal Entities | Genesis Energy, L.P. (Parent and Co-Issuer)
ASSETS
Cash and cash equivalents	6			6	6	6
Other current assets	50			50
Total current assets	56			56
Fixed assets, at cost	0			0
Less: Accumulated depreciation	0			0
Net fixed assets	0			0
Mineral Leaseholds, net of accumulated depletion	0			0
Goodwill	0			0
Other assets, net of amortization	10,776			14,083
Advances to affiliates	3,305,568			3,808,712
Equity investees	0			0
Investments in subsidiaries	2,648,510			2,689,861
TOTAL ASSETS	5,964,910			6,512,712
LIABILITIES AND CAPITAL
Current liabilities	39,342			46,086
Senior secured credit facility	970,100			1,099,200
Senior unsecured notes, net of debt issuance costs	2,462,363			2,598,918
Deferred tax liabilities	0			0
Advances from affiliates	0			0
Other liabilities	40,840			45,210
Total liabilities	3,512,645			3,789,414
Mezzanine Capital:
Class A Convertible Preferred Units	761,466			697,151
Partners’ capital, common units	1,690,799			2,026,147
Accumulated other comprehensive income (loss)	0	[1]		0
Noncontrolling interests	0			0
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	5,964,910			6,512,712
Reportable Legal Entities | Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	8,968			8,340	6,360	8,288
Other current assets	419,809			614,682
Total current assets	428,777			623,022
Fixed assets, at cost	5,363,274			5,523,431
Less: Accumulated depreciation	(994,609)			(708,269)
Net fixed assets	4,368,665			4,815,162
Mineral Leaseholds, net of accumulated depletion	560,481			564,506
Goodwill	301,959			325,046
Other assets, net of amortization	440,312			378,371
Advances to affiliates	0			0
Equity investees	355,085			381,550
Investments in subsidiaries	60,532			82,616
TOTAL ASSETS	6,515,811			7,170,273
LIABILITIES AND CAPITAL
Current liabilities	266,252			399,017
Senior secured credit facility	0			0
Senior unsecured notes, net of debt issuance costs	0			0
Deferred tax liabilities	12,576			11,913
Advances from affiliates	3,408,659			3,894,027
Other liabilities	188,181			182,414
Total liabilities	3,875,668			4,487,371
Mezzanine Capital:
Class A Convertible Preferred Units	0			0
Partners’ capital, common units	2,639,204			2,683,506
Accumulated other comprehensive income (loss)	939	[1]		(604)
Noncontrolling interests	0			0
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	6,515,811			7,170,273
Reportable Legal Entities | Non-Guarantor Subsidiaries
ASSETS
Cash and cash equivalents	1,326			695	663	2,601
Other current assets	13,285			12,316
Total current assets	14,611			13,011
Fixed assets, at cost	77,584			77,584
Less: Accumulated depreciation	(29,216)			(26,717)
Net fixed assets	48,368			50,867
Mineral Leaseholds, net of accumulated depletion	0			0
Goodwill	0			0
Other assets, net of amortization	117,766			126,300
Advances to affiliates	103,061			85,423
Equity investees	0			0
Investments in subsidiaries	0			0
TOTAL ASSETS	283,806			275,601
LIABILITIES AND CAPITAL
Current liabilities	27,350			11,417
Senior secured credit facility	0			0
Senior unsecured notes, net of debt issuance costs	0			0
Deferred tax liabilities	0			0
Advances from affiliates	0			0
Other liabilities	197,658			183,237
Total liabilities	225,008			194,654
Mezzanine Capital:
Class A Convertible Preferred Units	0			0
Partners’ capital, common units	70,002			89,026
Accumulated other comprehensive income (loss)	0	[1]		0
Noncontrolling interests	(11,204)			(8,079)
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	283,806			275,601
Eliminations
ASSETS
Cash and cash equivalents	0			0	$ 0	$ 0
Other current assets	(165)			(56)
Total current assets	(165)			(56)
Fixed assets, at cost	0			0
Less: Accumulated depreciation	0			0
Net fixed assets	0			0
Mineral Leaseholds, net of accumulated depletion	0			0
Goodwill	0			0
Other assets, net of amortization	(167,620)			(154,437)
Advances to affiliates	(3,408,629)			(3,894,135)
Equity investees	0			0
Investments in subsidiaries	(2,709,042)			(2,772,477)
TOTAL ASSETS	(6,285,456)			(6,821,105)
LIABILITIES AND CAPITAL
Current liabilities	(110)			(256)
Senior secured credit facility	0			0
Senior unsecured notes, net of debt issuance costs	0			0
Deferred tax liabilities	0			0
Advances from affiliates	(3,408,659)			(3,894,027)
Other liabilities	(167,481)			(154,290)
Total liabilities	(3,576,250)			(4,048,573)
Mezzanine Capital:
Class A Convertible Preferred Units	0			0
Partners’ capital, common units	(2,709,206)			(2,772,532)
Accumulated other comprehensive income (loss)	0	[1]		0
Noncontrolling interests	0			0
TOTAL LIABILITIES, MEZZANINE CAPITAL AND PARTNERS’ CAPITAL	$ (6,285,456)			$ (6,821,105)

[1] The entire balance and activity within Accumulated Other Comprehensive Income is related to our pension held within our Guarantor Subsidiaries.