Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2016	May. 04, 2016
Entity Information [Line Items]
Entity Registrant Name	GENESIS ENERGY LP
Entity Central Index Key	0001022321
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Amendment Flag	false
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Entity Filer Category	Large Accelerated Filer
Class A [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		109,939,221
Class B [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		39,997