Related-Party Transactions (Affiliated Quota Share Reinsurance Agreements For All New And Renewal Business For The Indicated Coverage Period) (Details) - 6 months ended Jun. 30, 2016 CAD in Thousands, $ in Thousands		CAD	USD ($)
Everest Re [Member]
Related Party Transaction [Line Items]
Assuming Company		Bermuda Re	Bermuda Re
Everest Re [Member] | Bermuda Re [Member] | 01/01/2002-12/31/2002 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		20.00%	20.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Everest Re [Member] | Bermuda Re [Member] | 01/01/2003-12/31/2003 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		25.00%	25.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Everest Re [Member] | Bermuda Re [Member] | 01/01/2004-12/31/2005 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		22.50%	22.50%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Everest Re [Member] | Bermuda Re [Member] | 01/01/2006-12/31/2006 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		18.00%	18.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property business	property business
Single Occurrence Limit	[1]		$ 125,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2006-12/31/2007 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		31.50%	31.50%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		casualty business	casualty business
Everest Re [Member] | Bermuda Re [Member] | 01/01/2007-12/31/2007 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		22.50%	22.50%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property business	property business
Single Occurrence Limit	[1]		$ 130,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2008-12/31/2008 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		36.00%	36.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit	[1]		$ 130,000
Aggregate Limit	[2]		$ 275,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2009-12/31/2009 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		36.00%	36.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit	[1]		$ 150,000
Aggregate Limit	[2]		$ 325,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2010-12/31/2010 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		44.00%	44.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit			$ 150,000
Aggregate Limit			$ 325,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2011 -12/31/2011 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		50.00%	50.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit			$ 150,000
Aggregate Limit			$ 300,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2012 -12/31/2014 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		50.00%	50.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit			$ 100,000
Aggregate Limit			$ 200,000
Everest Re [Member] | Bermuda Re [Member] | 01/01/2015 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		50.00%	50.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit			$ 162,500
Aggregate Limit			$ 325,000
Everest Re [Member] | Everest International [Member] | 01/01/2004-12/31/2005 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		2.50%	2.50%
Assuming Company		Everest International	Everest International
Type of Business		property / casualty business	property / casualty business
Everest Re [Member] | Everest International [Member] | 01/01/2006-12/31/2006 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		2.00%	2.00%
Assuming Company		Everest International	Everest International
Type of Business		property business	property business
Everest Re [Member] | Everest International [Member] | 01/01/2006-12/31/2007 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		3.50%	3.50%
Assuming Company		Everest International	Everest International
Type of Business		casualty business	casualty business
Everest Re [Member] | Everest International [Member] | 01/01/2007-12/31/2007 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		2.50%	2.50%
Assuming Company		Everest International	Everest International
Type of Business		property business	property business
Everest Re [Member] | Everest International [Member] | 01/01/2008-12/31/2008 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		4.00%	4.00%
Assuming Company		Everest International	Everest International
Type of Business		property / casualty business	property / casualty business
Everest Re [Member] | Everest International [Member] | 01/01/2009-12/31/2009 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re	Everest Re
Percent Ceded		8.00%	8.00%
Assuming Company		Everest International	Everest International
Type of Business		property / casualty business	property / casualty business
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2010-12/31/2010 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		60.00%	60.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property business	property business
Single Occurrence Limit | CAD	[3]	CAD 350,000
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2011 -12/31/2011 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		60.00%	60.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property business	property business
Single Occurrence Limit | CAD	[3]	CAD 350,000
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2003-12/31/2006 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		50.00%	50.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property business	property business
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2007-12/31/2009 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		60.00%	60.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property business	property business
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2012 -12/31/2012 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		75.00%	75.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit | CAD	[3]	CAD 206,250
Aggregate Limit | CAD	[3]	CAD 412,500
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2013 -12/31/2013 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		75.00%	75.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit | CAD	[3]	CAD 150,000
Aggregate Limit | CAD	[3]	CAD 412,500
Everest Re- Canadian Branch [Member] | Bermuda Re [Member] | 01/01/2014 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Percent Ceded		75.00%	75.00%
Assuming Company		Bermuda Re	Bermuda Re
Type of Business		property / casualty business	property / casualty business
Single Occurrence Limit | CAD	[3]	CAD 262,500
Aggregate Limit | CAD	[3]	CAD 412,500
Everest Canada [Member] | Everest Re- Canadian Branch [Member] | 01/01/2012 [Member]
Related Party Transaction [Line Items]
Ceding Company		Everest Canada	Everest Canada
Percent Ceded		80.00%	80.00%
Assuming Company		Everest Re- Canadian Branch	Everest Re- Canadian Branch
Type of Business		property business	property business

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

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

[3] Amounts shown are Canadian dollars.