Condensed Consolidating Financial Information (Condensed Consolidating Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	$ 85,128	$ 76,126
Refinery services	45,046	42,536
Marine Transportation Revenues	50,302	52,036
Supply And Logistics Revenues	235,015	207,716
Total revenues	415,491	378,414
Supply and logistics costs	214,332	187,769
Marine Transportation Operating Costs	37,242	33,022
Refinery services operating costs	27,364	20,985
Offshore Pipeline Transportation Operating Costs	17,868	17,934
General and administrative	9,976	12,221
Depreciation and amortization	56,112	46,635
Total costs and expenses	362,894	318,566
OPERATING INCOME	52,597	59,848
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity investees	11,335	10,717
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0
Interest Income (Expense), Net	(36,739)	(34,387)
Other income/(expense), net		0
Income from continuing operations before income taxes	27,193	36,178
Income tax (expense) benefit	(255)	(1,001)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	26,938	35,177
Net loss attributable to noncontrolling interest	152	126
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	27,090	35,303
Reportable Legal Entities | Genesis Energy, L.P. (Parent and Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0
Refinery services	0	0
Marine Transportation Revenues	0	0
Supply And Logistics Revenues	0	0
Total revenues	0	0
Supply and logistics costs	0	0
Marine Transportation Operating Costs	0	0
Refinery services operating costs	0	0
Offshore Pipeline Transportation Operating Costs	0	0
General and administrative	0	0
Depreciation and amortization	0	0
Total costs and expenses	0	0
OPERATING INCOME	0	0
Equity in earnings of subsidiaries	63,809	68,658
Equity in earnings of equity investees	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0
Interest Income (Expense), Net	(36,719)	(34,325)
Other income/(expense), net		0
Income from continuing operations before income taxes	27,090	34,333
Income tax (expense) benefit	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	27,090	34,333
Net loss attributable to noncontrolling interest	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	27,090	34,333
Reportable Legal Entities | Genesis Energy Finance Corporation (Co-Issuer)
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0
Refinery services	0	0
Marine Transportation Revenues	0	0
Supply And Logistics Revenues	0	0
Total revenues	0	0
Supply and logistics costs	0	0
Marine Transportation Operating Costs	0	0
Refinery services operating costs	0	0
Offshore Pipeline Transportation Operating Costs	0	0
General and administrative	0	0
Depreciation and amortization	0	0
Total costs and expenses	0	0
OPERATING INCOME	0	0
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity investees	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0
Interest Income (Expense), Net	0	0
Other income/(expense), net		0
Income from continuing operations before income taxes	0	0
Income tax (expense) benefit	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	0	0
Net loss attributable to noncontrolling interest	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	0	0
Reportable Legal Entities | Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	85,128	76,126
Refinery services	45,034	42,294
Marine Transportation Revenues	50,302	52,036
Supply And Logistics Revenues	230,070	202,171
Total revenues	410,534	372,627
Supply and logistics costs	214,071	187,473
Marine Transportation Operating Costs	37,242	33,022
Refinery services operating costs	27,153	20,446
Offshore Pipeline Transportation Operating Costs	17,106	17,305
General and administrative	9,976	12,221
Depreciation and amortization	55,487	46,010
Total costs and expenses	361,035	316,477
OPERATING INCOME	49,499	56,150
Equity in earnings of subsidiaries	(250)	78
Equity in earnings of equity investees	11,335	10,717
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0
Interest Income (Expense), Net	3,520	3,634
Other income/(expense), net		0
Income from continuing operations before income taxes	64,104	70,579
Income tax (expense) benefit	(255)	(910)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	63,849	69,669
Net loss attributable to noncontrolling interest	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	63,849	69,669
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0
Refinery services	1,810	803
Marine Transportation Revenues	0	0
Supply And Logistics Revenues	4,945	5,545
Total revenues	6,755	6,348
Supply and logistics costs	261	296
Marine Transportation Operating Costs	0	0
Refinery services operating costs	2,009	1,100
Offshore Pipeline Transportation Operating Costs	762	629
General and administrative	0	0
Depreciation and amortization	625	625
Total costs and expenses	3,657	2,650
OPERATING INCOME	3,098	3,698
Equity in earnings of subsidiaries	0	0
Equity in earnings of equity investees	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0
Interest Income (Expense), Net	(3,540)	(3,696)
Other income/(expense), net		0
Income from continuing operations before income taxes	(442)	2
Income tax (expense) benefit	0	(91)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(442)	(89)
Net loss attributable to noncontrolling interest	152	126
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	(290)	37
Eliminations
Condensed Financial Statements, Captions [Line Items]
Offshore Pipeline Transportation Services Revenues	0	0
Refinery services	(1,798)	(561)
Marine Transportation Revenues	0	0
Supply And Logistics Revenues	0	0
Total revenues	(1,798)	(561)
Supply and logistics costs	0	0
Marine Transportation Operating Costs	0	0
Refinery services operating costs	(1,798)	(561)
Offshore Pipeline Transportation Operating Costs	0	0
General and administrative	0	0
Depreciation and amortization	0	0
Total costs and expenses	(1,798)	(561)
OPERATING INCOME	0	0
Equity in earnings of subsidiaries	(63,559)	(68,736)
Equity in earnings of equity investees	0	0
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain		0
Interest Income (Expense), Net	0	0
Other income/(expense), net		0
Income from continuing operations before income taxes	(63,559)	(68,736)
Income tax (expense) benefit	0	0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	(63,559)	(68,736)
Net loss attributable to noncontrolling interest	0	0
NET INCOME ATTRIBUTABLE TO GENESIS ENERGY, L.P.	$ (63,559)	$ (68,736)