Related-Party Transactions (Affiliated Quota Share Reinsurance Agreements For All New And Renewal Business For The Indicated Coverage Period) (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 Everest Re [Member]	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2002-12/31/2002 [Member]	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2003-12/31/2003 [Member]	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2004-12/31/2005 [Member]	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2006-12/31/2006 [Member] USD ($)		Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2006-12/31/2007 [Member]	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2007-12/31/2007 [Member] USD ($)		Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2008-12/31/2008 [Member] USD ($)		Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2009-12/31/2009 [Member] USD ($)		Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2010-12/31/2010 [Member] USD ($)	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2011 -12/31/2011 [Member] USD ($)	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2012 -12/31/2014 [Member] USD ($)	Mar. 31, 2015 Everest Re [Member] Bermuda Re [Member] 01/01/2015 [Member] USD ($)	Mar. 31, 2015 Everest Re [Member] Everest International [Member] 01/01/2004-12/31/2005 [Member]	Mar. 31, 2015 Everest Re [Member] Everest International [Member] 01/01/2006-12/31/2006 [Member]	Mar. 31, 2015 Everest Re [Member] Everest International [Member] 01/01/2006-12/31/2007 [Member]	Mar. 31, 2015 Everest Re [Member] Everest International [Member] 01/01/2007-12/31/2007 [Member]	Mar. 31, 2015 Everest Re [Member] Everest International [Member] 01/01/2008-12/31/2008 [Member]	Mar. 31, 2015 Everest Re [Member] Everest International [Member] 01/01/2009-12/31/2009 [Member]	Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2010-12/31/2010 [Member] CAD		Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2011 -12/31/2011 [Member] CAD		Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2003-12/31/2006 [Member]	Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2007-12/31/2009 [Member]	Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2012 -12/31/2012 [Member] CAD		Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2013 -12/31/2013 [Member] CAD		Mar. 31, 2015 Everest Re- Canadian Branch [Member] Bermuda Re [Member] 01/01/2014 [Member] CAD		Mar. 31, 2015 Everest Canada [Member] Everest Re- Canadian Branch [Member] 01/01/2012 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re	Everest Re	Everest Re		Everest Re	Everest Re		Everest Re		Everest Re		Everest Re	Everest Re	Everest Re	Everest Re	Everest Re	Everest Re	Everest Re	Everest Re	Everest Re	Everest Re	Everest Re- Canadian Branch		Everest Re- Canadian Branch		Everest Re- Canadian Branch	Everest Re- Canadian Branch	Everest Re- Canadian Branch		Everest Re- Canadian Branch		Everest Re- Canadian Branch		Everest Canada
Percent Ceded		20.00%	25.00%	22.50%	18.00%		31.50%	22.50%		36.00%		36.00%		44.00%	50.00%	50.00%	50.00%	2.50%	2.00%	3.50%	2.50%	4.00%	8.00%	60.00%		60.00%		50.00%	60.00%	75.00%		75.00%		75.00%		80.00%
Assuming Company	Bermuda Re	Bermuda Re	Bermuda Re	Bermuda Re	Bermuda Re		Bermuda Re	Bermuda Re		Bermuda Re		Bermuda Re		Bermuda Re	Bermuda Re	Bermuda Re	Bermuda Re	Everest International	Everest International	Everest International	Everest International	Everest International	Everest International	Bermuda Re		Bermuda Re		Bermuda Re	Bermuda Re	Bermuda Re		Bermuda Re		Bermuda Re		Everest Re- Canadian Branch
Type of Business		property / casualty business	property / casualty business	property / casualty business	property business		casualty business	property business		property / casualty business		property / casualty business		property / casualty business	property / casualty business	property / casualty business	property / casualty business	property / casualty business	property business	casualty business	property business	property / casualty business	property / casualty business	property business		property business		property business	property business	property / casualty business		property / casualty business		property / casualty business		property business
Single Occurrence Limit					$ 125,000	[1]		$ 130,000	[1]	$ 130,000	[1]	$ 150,000	[1]	$ 150,000	$ 150,000	$ 100,000	$ 162,500							350,000	[2]	350,000	[2]			206,250	[2]	150,000	[2]	262,500	[2]
Aggregate Limit										$ 275,000	[3]	$ 325,000	[3]	$ 325,000	$ 300,000	$ 200,000	$ 325,000													412,500	[2]	412,500	[2]	412,500	[2]

[1] The single occurance limit is applied before the loss cessions to either Bermuda Re or Everest International.

[2] Amounts shown are Canadian dollars.

[3] The aggregate limit is applied before the loss cessions to either Bermuda Re or Everest International.