Schedule II - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES:
Net cash flows used in operating activities	$ (739,358)	$ 497,619	$ (62,387)
INVESTING ACTIVITIES:
Net cash flows provided by (used in) investing activities	487,067	(292,098)	(365,789)
FINANCING ACTIVITIES:
Repayment of loans	(377,500)	(199,245)	(39,505)
Receipt of loans	657,700	70,000	369,800
Net cash flows provided by financing activities	129,347	131,586	423,076
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(141,477)	319,561	(11,049)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	963,402	643,841	654,890
CASH AND CASH EQUIVALENTS, END OF YEAR	821,925	963,402	643,841
Enstar Group Limited
OPERATING ACTIVITIES:
Net cash flows used in operating activities	(81,384)	(88,970)	(174,868)
INVESTING ACTIVITIES:
Dividends and return of capital from subsidiaries	1,000	21,952	27,118
Contributions to subsidiaries	(218,935)	(50)	(100,071)
Net cash flows provided by (used in) investing activities	(217,935)	21,902	(72,953)
FINANCING ACTIVITIES:
Repayment of loans	(223,500)	(9,250)	0
Receipt of loans	505,700	70,000	95,000
Net cash flows provided by financing activities	282,200	60,750	95,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(17,119)	(6,318)	(152,821)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	21,671	27,989	180,810
CASH AND CASH EQUIVALENTS, END OF YEAR	$ 4,552	$ 21,671	$ 27,989