Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Aug. 05, 2016
Document Information [Line Items]
Entity Registrant Name	Enstar Group LTD
Entity Central Index Key	0001363829
Trading Symbol	ESGR
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q2
Amendment Flag	false
Voting Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		16,225,391
Non-Voting Convertible Ordinary Shares
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		3,130,408