Document and Entity Information	3 Months Ended
	Mar. 31, 2014	May 07, 2014 Subordinated Units [Member]	May 07, 2014 Preferred units issued	May 07, 2014 Limited Partner, units authorized
Entity Registrant Name	Southcross Energy Partners, L.P.
Entity Central Index Key	0001547638
Document Type	10-Q
Document Period End Date	Mar. 31, 2014
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		12,213,713	1,800,886	21,465,046
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1