Everest (EG) 10-K 1 Mar 17 2016 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Feb. 01, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Entity Registrant Name	EVEREST RE GROUP LTD
Entity Central Index Key	1,095,073
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		40,906,436
Entity Well-known Seasoned Issuer	Yes
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Public Float			$ 7,650,846

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS:
Fixed maturities - available for sale, at market value (amortized cost: 2016, $13,932,613; 2015, $13,276,206)	$ 14,107,408	$ 13,357,294
Fixed maturities - available for sale, at fair value		2,102
Equity securities - available for sale, at market value (cost: 2016, $129,553; 2015, $122,271)	119,067	108,940
Equity securities - available for sale, at fair value	1,010,085	1,337,733
Short-term investments	431,478	799,684
Other invested assets (cost: 2016, $1,333,069; 2015, $786,994)	1,333,129	786,994
Cash	481,922	283,658
Total investments and cash	17,483,089	16,676,405
Accrued investment income	96,473	100,942
Premiums receivable	1,485,990	1,483,090
Reinsurance receivables	1,018,325	894,037
Funds held by reinsureds	260,644	278,673
Deferred acquisition costs	344,052	372,351
Prepaid reinsurance premiums	191,768	164,971
Income taxes	177,704	258,541
Other assets	263,459	316,408
TOTAL ASSETS	21,321,504	20,545,418
LIABILITIES:
Reserve for losses and loss adjustment expenses	10,312,313	9,951,798
Future policy benefit reserve	55,074	58,910
Unearned premium reserve	1,577,546	1,613,390
Funds held under reinsurance treaties	21,278	13,544
Commission reserves	70,335	60,098
Other net payable to reinsurers	190,986	173,087
Losses in course of payment	67,107	112,170
4.868% Senior notes due 6/1/2044	396,714	396,594
6.6% Long term notes due 5/1/2067	236,462	236,364
Accrued interest on debt and borrowings	3,537	3,537
Equity index put option liability	22,059	40,705
Unsettled securities payable	27,927	15,314
Other liabilities	264,770	261,322
Total liabilities	13,246,108	12,936,833
Commitments and contingencies (Note 15)
SHAREHOLDERS' EQUITY:
Preferred shares, par value: $0.01; 50,000 shares authorized; no shares issued and outstanding
Common shares, par value: $0.01; 200,000 shares authorized; (2016) 68,871 and (2015) 68,606 outstanding before treasury shares	689	686
Additional paid-in capital	2,140,783	2,103,638
Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit) of $8,240 at 2016 and ($15,863) at 2015	(216,764)	(231,755)
Treasury shares, at cost; 27,972 shares (2016) and 25,912 shares (2015)	(3,272,244)	(2,885,956)
Retained earnings	9,422,932	8,621,972
Total shareholders' equity	8,075,396	7,608,585
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 21,321,504	$ 20,545,418

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fixed maturities - available for sale, at market value, amortized cost	$ 13,932,613	$ 13,276,206
Equity securities - available for sale, at market value, cost	129,553	122,271
Other invested assets, at cost	$ 1,333,069	$ 786,994
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common shares, authorized	200,000,000	200,000,000
Common shares, outstanding	68,871,000	68,606,000
Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit)	$ 8,240	$ (15,863)
Treasury shares	27,972,000	25,912,000
Long Term Subordinated Notes [Member]
Debt instrument, stated interest rate	6.60%	6.60%
Debt instrument, maturity date	May 1, 2067
4.868% Senior notes due 6/1/2044 [Member] | Senior Notes [Member]
Debt instrument, stated interest rate	4.868%	4.868%
Debt instrument, maturity date	Jun. 1, 2044

Consolidated Statements Of Oper

Consolidated Statements Of Operations And Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUES:
Premiums earned	$ 5,320,466	$ 5,292,842	$ 5,043,707
Net investment income	473,085	473,473	530,485
Net realized capital gains (losses):
Other-than-temporary impairments on fixed maturity securities	(31,595)	(102,199)	(39,502)
Other-than-temporary impairments on fixed maturity securities transferred to other comprehensive income (loss)
Other net realized capital gains (losses)	24,379	(81,948)	123,548
Total net realized capital gains (losses)	(7,216)	(184,147)	84,046
Net derivative gain (loss)	18,647	6,317	(11,599)
Other income (expense)	(10,636)	88,280	32,308
Total revenues	5,794,346	5,676,765	5,678,947
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses	3,139,629	3,064,715	2,875,936
Commission, brokerage, taxes and fees	1,188,692	1,183,646	1,121,145
Other underwriting expenses	302,722	257,069	233,104
Corporate expenses	27,231	23,254	23,421
Interest, fees and bond issue cost amortization expense	36,228	36,191	38,533
Total claims and expenses	4,694,502	4,564,875	4,292,139
INCOME (LOSS) BEFORE TAXES	1,099,844	1,111,890	1,386,808
Income tax expense (benefit)	103,500	134,021	187,652
NET INCOME (LOSS)	996,344	977,869	1,199,156
Other comprehensive income (loss), net of tax :
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period	57,629	(274,127)	704
Reclassification adjustment for realized losses (gains) included in net income (loss)	15,118	93,688	21,392
Total URA(D) on securities arising during the period	72,747	(180,439)	22,096
Foreign currency translation adjustments	(55,341)	(111,530)	(95,417)
Benefit plan actuarial net gain (loss) for the period	(7,488)	5,681	(39,110)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)	5,073	6,216	3,020
Total benefit plan net gain (loss) for the period	(2,415)	11,897	(36,090)
Total other comprehensive income (loss), net of tax	14,991	(280,072)	(109,411)
COMPREHENSIVE INCOME (LOSS)	$ 1,011,335	$ 697,797	$ 1,089,745
EARNINGS PER COMMON SHARE ATTRIBUTABLE TO EVEREST RE GROUP:
Basic	$ 23.85	$ 22.29	$ 26.16
Diluted	23.68	22.10	25.91
Dividends declared	$ 4.7	$ 4	$ 3.2

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Common Shares [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss), Net Of Deferred Income Taxes [Member]	Retained Earnings [Member]	Treasury Shares At Cost [Member]	Total
Balance, beginning of period, shares at Dec. 31, 2013	47,543,132
Issued during the period, shares	371,359
Treasury shares acquired, shares	(3,228,854)
Balance, beginning of period at Dec. 31, 2013	$ 680	$ 2,029,774	$ 157,728	$ 6,765,967	$ (1,985,873)
Issued during the period, net	$ 3
Share-based compensation plans		39,033
Net increase (decrease) during the period			(109,411)			$ (109,411)
NET INCOME (LOSS)				1,199,156		1,199,156
Dividends declared ($4.70 per share in 2016, $4.00 per share in 2015, and $3.20 per share in 2014)				(145,913)		(145,913)
Purchase of treasury shares					(500,024)
Balance, end of period, shares at Dec. 31, 2014	44,685,637
Balance, end of period at Dec. 31, 2014	$ 683	2,068,807	48,317	7,819,210	(2,485,897)	7,451,120
Issued during the period, shares	270,477
Treasury shares acquired, shares	(2,261,862)
Issued during the period, net	$ 3
Share-based compensation plans		34,831
Net increase (decrease) during the period			(280,072)			(280,072)
NET INCOME (LOSS)				977,869		977,869
Dividends declared ($4.70 per share in 2016, $4.00 per share in 2015, and $3.20 per share in 2014)				(175,107)		$ (175,107)
Purchase of treasury shares					(400,059)
Balance, end of period, shares at Dec. 31, 2015	42,694,252					68,606,000
Balance, end of period at Dec. 31, 2015	$ 686	2,103,638	(231,755)	8,621,972	(2,885,956)	$ 7,608,585
Issued during the period, shares	264,313
Treasury shares acquired, shares	(2,059,701)
Issued during the period, net	$ 3
Share-based compensation plans		37,145
Net increase (decrease) during the period			14,991			14,991
NET INCOME (LOSS)				996,344		996,344
Dividends declared ($4.70 per share in 2016, $4.00 per share in 2015, and $3.20 per share in 2014)				(195,384)		$ (195,384)
Purchase of treasury shares					(386,288)
Balance, end of period, shares at Dec. 31, 2016	40,898,864					68,871,000
Balance, end of period at Dec. 31, 2016	$ 689	$ 2,140,783	$ (216,764)	$ 9,422,932	$ (3,272,244)	$ 8,075,396

Consolidated Statements Of Cha6

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements Of Changes In Shareholders' Equity [Abstract]
Dividends declared	$ 4.7	$ 4	$ 3.2

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS)	$ 996,344	$ 977,869	$ 1,199,156
Adjustments to reconcile net income to net cash provided by operating activities:
Decrease (increase) in premiums receivable	(15,655)	(98,211)	48,371
Decrease (increase) in funds held by reinsureds, net	22,219	(43,775)	(1,835)
Decrease (increase) in reinsurance receivables	(202,950)	(265,103)	(210,648)
Decrease (increase) in income taxes	54,526	(36,771)	31,333
Decrease (increase) in prepaid reinsurance premiums	(32,455)	(21,819)	(78,130)
Increase (decrease) in reserve for losses and loss adjustment expenses	545,967	394,167	195,524
Increase (decrease) in future policy benefit reserve	(3,836)	(910)	308
Increase (decrease) in unearned premiums	(22,072)	(96,950)	161,149
Increase (decrease) in other net payable to reinsurers	26,200	43,727	28,308
Increase (decrease) in losses in course of payment	(45,933)	(43,964)	(174,206)
Change in equity adjustments in limited partnerships	(37,939)	(12,965)	(39,464)
Distribution of limited partnership income	62,008	53,984	51,120
Change in other assets and liabilities, net	(56,204)	(8,934)	(142,635)
Non-cash compensation expense	26,398	21,237	21,197
Amortization of bond premium (accrual of bond discount)	49,167	50,901	49,214
Amortization of underwriting discount on senior notes	4	4	46
Net realized capital (gains) losses	7,216	184,147	(84,046)
Net cash provided by (used in) operating activities	1,373,005	1,096,634	1,054,762
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from fixed maturities matured/called - available for sale, at market value	1,919,808	2,144,930	2,142,693
Proceeds from fixed maturities matured/called - available for sale, at fair value			875
Proceeds from fixed maturities sold - available for sale, at market value	1,258,434	1,724,093	1,811,801
Proceeds from fixed maturities sold - available for sale, at fair value	5,837	1,824	36,467
Proceeds from equity securities sold - available for sale, at market value	6,423	28,936	16,901
Proceeds from equity securities sold - available for sale, at fair value	723,359	614,044	584,069
Distributions from other invested assets	4,823,484	57,201	115,482
Proceeds from sale of subsidiary (net of cash disposed)	47,721	3,934
Cost of fixed maturities acquired - available for sale, at market value	(4,061,896)	(4,718,303)	(4,672,633)
Cost of fixed maturities acquired - available for sale, at fair value	(3,940)	(2,436)	(24,098)
Cost of equity securities acquired - available for sale, at market value	(12,538)	(10,850)	(18,016)
Cost of equity securities acquired - available for sale, at fair value	(346,929)	(556,889)	(446,457)
Cost of other invested assets acquired	(5,396,001)	(286,599)	(224,740)
Net change in short-term investments	368,977	341,733	(76,483)
Net change in unsettled securities transactions	9,388	(22,719)	(4,433)
Net cash provided by (used in) investing activities	(657,873)	(681,101)	(758,572)
CASH FLOWS FROM FINANCING ACTIVITIES:
Common shares issued during the period, net	10,751	13,597	17,839
Purchase of treasury shares	(386,288)	(400,059)	(500,024)
Net cost of senior notes maturing			(250,000)
Proceeds from issuance of senior notes			400,000
Dividends paid to shareholders	(195,384)	(175,107)	(145,913)
Net cash provided by (used in) financing activities	(570,921)	(561,569)	(478,098)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	54,053	(7,780)	8,000
Net increase (decrease) in cash	198,264	(153,816)	(173,908)
Cash, beginning of period	283,658	437,474	611,382
Cash, end of period	481,922	283,658	437,474
SUPPLEMENTAL CASH FLOW INFORMATION:
Income taxes paid (recovered)	42,636	164,856	153,455
Interest paid	$ 36,010	$ 35,973	$ 39,424

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2016
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES A. Business and Basis of Presentation. Everest Re Group, Ltd. ("Group"), a Bermuda company, through its subsidiaries, principally provides reinsurance and insurance in the U.S., Bermuda and international markets. As used in this document, "Company" means Group and its subsidiaries. During the third quarter of 2016, the Company established domestic subsidiaries, Everest Premier Insurance Company ("Everest Premier") and Everest Denali Insurance Company ("Everest Denali"), which will be used in the continued expansion of the Insurance operations. Effective July 1, 2016, the Company established a new Irish holding company, Everest Dublin Insurance Holdings Limited (Ireland) ("Everest Dublin Holdings"). Effective August 24, 2016, the Company sold its wholly-owned subsidiary, Heartland Crop Insurance Company ("Heartland"), a managing agent for crop insurance, to CGB Diversified Services, Inc. ("CGB"). The operating results of Heartland through August 24, 2016, are included within the Company's financial statements. During the fourth quarter of 2015, the Company established new subsidiaries, Everest Preferred International Holdings, Ltd. ("Preferred International"), a Bermuda based company and Everest International Holdings (Bermuda), Ltd. ("International Holdings"), a Bermuda based company. These new subsidiaries were part of a capital restructuring within the Company to support a planned increase in international business production, which includes directly supporting Group's new Lloyd's of London Syndicate corporate member. Effective July 13, 2015, the Company sold all of the outstanding shares of capital stock of a wholly-owned subsidiary entity, Mt. McKinley Insurance Company ("Mt. McKinley"), to Clearwater Insurance Company. The operating results of Mt. McKinley through July 13, 2015 are included within the Company's financial statements. Effective February 27, 2013, the Company established a new subsidiary, Mt. Logan Reinsurance Limited ("Mt. Logan Re"). Mt. Logan Re manages separate segregated accounts whose assets and capital relate mainly to third party external investors. The segregated account activities related to third party external investors are not included as part of the Company's financial statements. The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP"). The statements include all of the following domestic and foreign direct and indirect subsidiaries of Group: Everest International Reinsurance, Ltd. ("Everest International"), Everest Global Services, Inc. ("Global Services"), Mt. Logan Insurance Managers, Ltd., Mt. Logan Management, Ltd., International Holdings, Everest Corporate Member Limited, Everest Service Company (UK), Ltd., Preferred International, Everest Reinsurance (Bermuda), Ltd. ("Bermuda Re"), Everest Re Advisors, Ltd., Everest Advisors (UK), Ltd., Everest Underwriting Group (Ireland), Limited ("Holdings Ireland"), Everest Insurance Company of Canada ("Everest Canada"), Premiere Insurance Underwriting Services ("Premiere"), Everest Dublin Holdings, Everest Dublin Insurance Limited, Everest Reinsurance Company (Ireland), designated activity company ("Ireland Re"), Everest Reinsurance Holdings, Inc. ("Holdings"), Heartland, Everest International Assurance, Ltd. (Bermuda) ("Everest Assurance"), Specialty Insurance Group, Inc. ("Specialty"), Specialty Insurance Group - Leisure and Entertainment Risk Purchasing Group LLC ("Specialty RPG"), Mt. McKinley, Mt. McKinley Managers, L.L.C., Workcare Southeast of Georgia, Inc., Everest Specialty Underwriters Services, LLC, Everest Reinsurance Company ("Everest Re"), Everest National Insurance Company ("Everest National"), Everest Reinsurance Company Ltda. (Brazil), Mt. Whitney Securities, Inc., Everest Indemnity Insurance Company ("Everest Indemnity"), Everest Denali, Everest Premier and Everest Security Insurance Company ("Everest Security"). All amounts are reported in U.S. dollars. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities (and disclosure of contingent assets and liabilities) at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Ultimate actual results could differ, possibly materially, from those estimates. All intercompany accounts and transactions have been eliminated. Certain reclassifications and format changes have been made to prior years' amounts to conform to the 2016 presentation. B. Investments. Fixed maturity and equity security investments available for sale, at market value, reflect unrealized appreciation and depreciation, as a result of temporary changes in market value during the period, in shareholders' equity, net of income taxes in "accumulated other comprehensive income (loss)" in the consolidated balance sheets. Fixed maturity and equity securities carried at fair value reflect fair value re-measurements as net realized capital gains and losses in the consolidated statements of operations and comprehensive income (loss). The Company records changes in fair value for its fixed maturities available for sale, at market value through shareholders' equity, net of taxes in accumulated other comprehensive income (loss) since cash flows from these investments will be primarily used to settle its reserve for losses and loss adjustment expense liabilities. The Company anticipates holding these investments for an extended period as the cash flow from interest and maturities will fund the projected payout of these liabilities. Fixed maturities carried at fair value represent a portfolio of convertible bond securities, which have characteristics similar to equity securities and at times, designated foreign denominated fixed maturity securities, which will be used to settle loss and loss adjustment reserves in the same currency. The Company carries all of its equity securities at fair value except for mutual fund investments whose underlying investments are comprised of fixed maturity securities. For equity securities, available for sale, at fair value, the Company reflects changes in value as net realized capital gains and losses since these securities may be sold in the near term depending on financial market conditions. Interest income on all fixed maturities and dividend income on all equity securities are included as part of net investment income in the consolidated statements of operations and comprehensive income (loss). Unrealized losses on fixed maturities, which are deemed other-than-temporary and related to the credit quality of a security, are charged to net income (loss) as net realized capital losses. Short-term investments are stated at cost, which approximates market value. Realized gains or losses on sales of investments are determined on the basis of identified cost. For some non-publicly traded securities, market prices are determined through the use of pricing models that evaluate securities relative to the U.S. Treasury yield curve, taking into account the issue type, credit quality, and cash flow characteristics of each security. For other non-publicly traded securities, an investment manager's valuation committee will estimate fair value, which is reviewed by the Company for reasonableness. For publicly traded securities, market value is based on quoted market prices or valuation models that use observable market inputs. When a sector of the financial markets is inactive or illiquid, the Company may use its own assumptions about future cash flows and risk-adjusted discount rates to determine fair value. Retrospective adjustments are employed to recalculate the values of asset-backed securities. Each acquisition lot is reviewed to recalculate the effective yield. The recalculated effective yield is used to derive a book value as if the new yield were applied at the time of acquisition. Outstanding principal factors from the time of acquisition to the adjustment date are used to calculate the prepayment history for all applicable securities. Conditional prepayment rates, computed with life to date factor histories and weighted average maturities, are used to effect the calculation of projected and prepayments for pass-through security types. Other invested assets include limited partnerships, a private placement liquidity sweep facility and rabbi trusts. Cash contributions to and cash distributions from the sweep facility are reported gross in cash flows from investing activities in the Consolidated Statements of Cash Flows. Limited partnerships are accounted for under the equity method of accounting, which can be recorded on a monthly or quarterly lag. C. Uncollectible Receivable Balances. The Company provides reserves for uncollectible reinsurance recoverable and premium receivable balances based on management's assessment of the collectability of the outstanding balances. Such reserves are presented in the table below for the periods indicated. Years Ended December 31, (Dollars in thousands) 2016 2015 Reinsurance receivables and premium receivables $ 23,360 $ 22,878 D. Deferred Acquisition Costs. Acquisition costs, consisting principally of commissions and brokerage expenses and certain premium taxes and fees incurred at the time a contract or policy is issued and that vary with and are directly related to the Company's reinsurance and insurance business, are deferred and amortized over the period in which the related premiums are earned. Deferred acquisition costs are limited to their estimated realizable value by line of business based on the related unearned premiums, anticipated claims and claim expenses and anticipated investment income. Deferred acquisition costs amortized to income are presented in the table below for the periods indicated. Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Deferred acquisition costs $ 1,188,692 $ 1,183,646 $ 1,121,145 E. Reserve for Losses and Loss Adjustment Expenses. The reserve for losses and loss adjustment expenses ("LAE") is based on individual case estimates and reports received from ceding companies. A provision is included for losses and LAE incurred but not reported ("IBNR") based on past experience. A provision is also included for certain potential liabilities relating to asbestos and environmental ("A&E") exposures, which liabilities cannot be estimated using traditional reserving techniques. See also Note 3. The reserves are reviewed periodically and any changes in estimates are reflected in earnings in the period the adjustment is made. The Company's loss and LAE reserves represent management's best estimate of the ultimate liability. Loss and LAE reserves are presented gross of reinsurance receivables and incurred losses and LAE are presented net of reinsurance. Accruals for commissions are established for reinsurance contracts that provide for the stated commission percentage to increase or decrease based on the loss experience of the contract. Changes in estimates for such arrangements are recorded as commission expense. Commission accruals for contracts with adjustable features are estimated based on expected loss and LAE. F. Future Policy Benefit Reserve. Liabilities for future policy benefits on annuity policies are carried at their accumulated values. Reserves for policy benefits include mortality claims in the process of settlement and IBNR claims. Actual experience in a particular period may fluctuate from expected results. G. Premium Revenues. Written premiums are earned ratably over the periods of the related insurance and reinsurance contracts. Unearned premium reserves are established relative to the unexpired contract period. Such reserves are established based upon reports received from ceding companies or estimated using pro rata methods based on statistical data. Reinstatement premiums represent additional premium received on reinsurance coverages, most prevalently catastrophe related, when limits have been depleted under the original reinsurance contract and additional coverage is granted. Written and earned premiums and the related costs, which have not yet been reported to the Company, are estimated and accrued. Premiums are net of ceded reinsurance. Payout annuity premiums are recognized as revenue over the premium-paying period of the policies. H. Prepaid Reinsurance Premiums. Prepaid reinsurance premiums represent unearned premium reserves ceded to other reinsurers. Prepaid reinsurance premiums for any foreign reinsurers comprising more than 10 I. Income Taxes. Holdings and its wholly-owned subsidiaries file a consolidated U.S. federal income tax return. Foreign subsidiaries and branches of subsidiaries file local tax returns as required. Group and subsidiaries not included in Holdings' consolidated tax return file separate company U.S. federal income tax returns as required. Deferred income taxes have been recorded to recognize the tax effect of temporary differences between the financial reporting and income tax bases of assets and liabilities, which arise because of differences between GAAP and income tax accounting rules. J. Foreign Currency. As a global entity, the Company transacts business in numerous currencies through business units located around the world. The base transactional currency for each business unit is determined by the local currency used for most economic activity in that area. Movements in exchange rates related to assets and liabilities at the business units between the original currency and the base currency are recorded through the consolidated statements of operations and comprehensive income (loss) in other income (expense), except for currency movements related to available for sale investments, which are excluded from net income (loss) and accumulated in shareholders' equity, net of deferred taxes. The business units' base currency financial statements are translated to U.S. dollars using the exchange rates at the end of period for the balance sheets and the average exchange rates in effect for the reporting period for the income statements. Gains and losses resulting from translating the foreign currency financial statements, net of deferred income taxes, are excluded from net income loss and accumulated in shareholder's equity. K. Earnings Per Common Share. Basic earnings per share are calculated by dividing net income by the weighted average number of common shares outstanding. Diluted earnings per share reflect the potential dilution that would occur if options granted under various share-based compensation plans were exercised resulting in the issuance of common shares that would participate in the earnings of the entity. Net income (loss) attributable to Everest Re Group per common share has been computed as per below, based upon weighted average common basic and dilutive shares outstanding. Years Ended December 31, (Dollars in thousands, except per share amounts) 2016 2015 2014 Net income (loss) per share: Numerator Net income (loss) $ 996,344 $ 977,869 $ 1,199,156 Less: dividends declared-common shares and nonvested common shares (195,384 ) (175,107 ) (145,913 ) Undistributed earnings 800,960 802,762 1,053,243 Percentage allocated to common shareholders (1) 98.9 % 98.9 % 99.0 % 792,415 794,309 1,042,423 Add: dividends declared-common shareholders 193,413 173,367 144,447 Numerator for basic and diluted earnings per common share $ 985,829 $ 967,676 $ 1,186,870 Denominator Denominator for basic earnings per weighted-average common shares 41,329 43,415 45,377 Effect of dilutive securities: Options 300 380 425 Denominator for diluted earnings per adjusted weighted-average common shares 41,628 43,795 45,802 Per common share net income (loss) Basic $ 23.85 $ 22.29 $ 26.16 Diluted $ 23.68 $ 22.10 $ 25.91 (1) 41,329 43,415 45,377 Basic weighted-average common shares outstanding and nonvested common shares expected to vest 41,774 43,877 45,848 Percentage allocated to common shareholders 98.9 % 98.9 % 99.0 % (Some amounts may not reconcile due to rounding.) There were no All outstanding options expire on or between February 21, 2017 September 19, 2022 L. Segmentation. The Company, through its subsidiaries, operates in four M. Derivatives. The Company sold seven two The fair value of the equity index put options can be found in the Company's consolidated balance sheets as follows: (Dollars in thousands) Derivatives not designated as Location of fair value At December 31, hedging instruments in balance sheets 2016 2015 Equity index put option contracts Equity index put option liability $ 22,059 $ 40,705 Total $ 22,059 $ 40,705 The change in fair value of the equity index put option contracts can be found in the Company's statement of operations and comprehensive income (loss) as follows: (Dollars in thousands) Derivatives not designated as Location of gain (loss) in statements of For the Years Ended December 31, hedging instruments operations and comprehensive income (loss) 2016 2015 2014 Equity index put option contracts Net derivative gain (loss) $ 18,647 $ 6,317 $ (11,599 ) Total $ 18,647 $ 6,317 $ (11,599 ) N. Deposit Assets and Liabilities. In the normal course of its operations, the Company may enter into contracts that do not meet risk transfer provisions. Such contracts are accounted for using the deposit accounting method and are included in other liabilities in the Company's consolidated balance sheets. For such contracts, the Company originally records deposit liabilities for an amount equivalent to the assets received. Actuarial studies are used to estimate the final liabilities under such contracts with any change reflected in the consolidated statements of operations and comprehensive income (loss). O. Share-Based Compensation. Share-based compensation stock option, restricted share and performance share unit awards are fair valued at the grant date and expensed over the vesting period of the award. The tax benefit on the recorded expense is deferred until the time the award is exercised or vests (becomes unrestricted). See Note 16. P. Application of Recently Issued Accounting Guidance. Accounting for Share-Based Compensation. Disclosures about Short-Duration Contracts. Disclosures for Investments in Certain Entities that Calculate Net Asset Value Per Share. Debt Issuance Costs. Consolidation. The following tables present certain financial statement line items as previously reported in 2015 and 2014, the effect on those line items due to not consolidating the segregated accounts of Mt. Logan Re, in accordance with the newly adopted accounting policy and the line items as currently reported within the financial statements. CONSOLIDATED BALANCE SHEET: December 31, 2015 Effect of adoption As previously of new accounting reported policy As adopted (Dollars in thousands) ASSETS: Short-term investments $ 1,795,455 $ (995,771 ) $ 799,684 Total investments and cash 17,672,176 (995,771 ) 16,676,405 Premiums receivable 1,479,293 3,797 1,483,090 Reinsurance receivables 840,420 53,617 894,037 Deferred acquisition costs 373,072 (721 ) 372,351 Prepaid reinsurance premiums 157,424 7,547 164,971 Other assets 265,634 56,184 321,818 TOTAL ASSETS 21,426,175 (875,347 ) 20,550,828 LIABILITIES: Funds held under reinsurance treaties 88,544 (75,000 ) 13,544 Commission reserves 79,849 (19,751 ) 60,098 Other net payable to reinsurers 166,822 6,265 173,087 Other liabilities 291,322 (30,000 ) 261,322 Total liabilities 13,060,729 (118,486 ) 12,942,243 NONCONTROLLING INTERESTS: Redeemable noncontrolling interests - Mt. Logan Re 756,861 (756,861 ) - TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY 21,426,175 (875,347 ) 20,550,828 CONSOLIDATED STATEMENTS OF OPERATIONS Twelve Months Ended December 31, 2015 Twelve Months Ended December 31, 2014 AND COMPREHENSIVE INCOME (LOSS): Effect of Effect of adoption of adoption of As previously new accounting As previously new accounting reported policy As adopted reported policy As adopted (Dollars in thousands) REVENUES: Premiums earned $ 5,481,459 $ (188,617 ) $ 5,292,842 $ 5,169,135 $ (125,428 ) $ 5,043,707 Net investment income 473,825 (352 ) 473,473 530,570 (85 ) 530,485 Other income (expense) 60,435 27,845 88,280 18,437 13,871 32,308 Total revenues 5,837,889 (161,124 ) 5,676,765 5,790,589 (111,642 ) 5,678,947 CLAIMS AND EXPENSES: Incurred losses and loss adjustment expenses 3,101,915 (37,200 ) 3,064,715 2,906,534 (30,598 ) 2,875,936 Commission, brokerage, taxes and fees 1,202,036 (18,390 ) 1,183,646 1,135,586 (14,441 ) 1,121,145 Other underwriting expenses 265,984 (8,915 ) 257,069 240,400 (7,296 ) 233,104 Total claims and expenses 4,629,380 (64,505 ) 4,564,875 4,344,474 (52,335 ) 4,292,139 INCOME (LOSS) BEFORE TAXES 1,208,509 (96,619 ) 1,111,890 1,446,115 (59,307 ) 1,386,808 NET INCOME (LOSS) 1,074,488 (96,619 ) 977,869 1,258,463 (59,307 ) 1,199,156 Net income (loss) attributable to noncontrolling interests (96,619 ) 96,619 - (59,307 ) 59,307 - NET INCOME (LOSS) ATTRIBUTABLE TO EVEREST RE GROUP 977,869 (977,869 ) - 1,199,156 (1,199,156 ) - CONSOLIDATED STATEMENT OF CASH FLOWS: Twelve Months Ended December 31, 2015 Twelve Months Ended December 31, 2014 Effect of Effect of adoption of adoption of As previously new accounting As previously new accounting (Dollars in thousands) reported policy As adopted reported policy As adopted CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 1,074,488 $ (96,619 ) $ 977,869 $ 1,258,463 $ (59,307 ) $ 1,199,156 Decrease (increase) in premiums receivable (93,837 ) (4,374 ) (98,211 ) 45,282 3,089 48,371 Decrease (increase) in funds held by reinsureds, net 31,225 (75,000 ) (43,775 ) (1,835 ) - (1,835 ) Decrease (increase) in reinsurance receivables (240,414 ) (24,689 ) (265,103 ) (186,014 ) (24,634 ) (210,648 ) Decrease (increase) in prepaid reinsurance premiums (14,486 ) (7,333 ) (21,819 ) (79,086 ) 956 (78,130 ) Increase (decrease) in other net payable to reinsurers 38,262 5,465 43,727 29,410 (1,102 ) 28,308 Change in other assets and liabilities, net 264 (9,198 ) (8,934 ) 35,419 (178,054 ) (142,635 ) Net cash provided by (used in) operating activities 1,308,382 (211,748 ) 1,096,634 1,313,821 (259,059 ) 1,054,762 CASH FLOWS FROM INVESTING ACTIVITIES: Net change in short-term investments (98,903 ) 440,636 341,733 (497,983 ) 421,500 (76,483 ) Net cash provided by (used in) investing activities (1,121,737 ) 440,636 (681,101 ) (1,180,072 ) 421,500 (758,572 ) CASH FLOWS FROM FINANCING ACTIVITIES: Third party investment in redeemable noncontrolling interest 266,848 (266,848 ) - 136,200 (136,200 ) - Subscription advances for third party redeemable noncontrolling interest 30,000 (30,000 ) - 40,000 (40,000 ) - Dividends paid on third party investment in redeemable noncontrolling interest (68,158 ) 68,158 - (10,334 ) 10,334 - Net cash provided by (used in) financing activities (332,879 ) (228,690 ) (561,569 ) (312,232 ) (165,866 ) (478,098 ) EFFECT OF EXCHANGE RATE CHANGES ON CASH (7,582 ) (198 ) (7,780 ) 4,575 3,425 8,000

Investments

Investments	12 Months Ended
	Dec. 31, 2016
Investments [Abstract]
Investments	2. INVESTMENTS The amortized cost, market value and gross unrealized appreciation and depreciation of available for sale, fixed maturity, equity security investments, carried at market value and other-than-temporary impairments ("OTTI") in accumulated other comprehensive income ("AOCI") are as follows for the periods indicated: At December 31, 2016 Amortized Unrealized Unrealized Market OTTI in AOCI (Dollars in thousands) Cost Appreciation Depreciation Value (a) Fixed maturity securities U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,115,208 $ 20,410 $ (5,303 ) $ 1,130,315 $ - Obligations of U.S. states and political subdivisions 723,938 18,016 (11,970 ) 729,984 - Corporate securities 5,059,388 131,651 (35,758 ) 5,155,281 7,936 Asset-backed securities 488,824 1,110 (1,286 ) 488,648 - Mortgage-backed securities Commercial 308,827 1,983 (3,878 ) 306,932 - Agency residential 2,415,901 17,478 (27,910 ) 2,405,469 - Non-agency residential 642 44 (45 ) 641 - Foreign government securities 1,254,175 61,226 (57,241 ) 1,258,160 115 Foreign corporate securities 2,565,710 130,714 (64,446 ) 2,631,978 1,184 Total fixed maturity securities $ 13,932,613 $ 382,632 $ (207,837 ) $ 14,107,408 $ 9,235 Equity securities $ 129,553 $ 2,298 $ (12,784 ) $ 119,067 $ - At December 31, 2015 Amortized Unrealized Unrealized Market OTTI in AOCI (Dollars in thousands) Cost Appreciation Depreciation Value (a) Fixed maturity securities U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 805,273 $ 13,465 $ (1,861 ) $ 816,877 $ - Obligations of U.S. states and political subdivisions 669,945 34,020 (890 ) 703,075 - Corporate securities 4,817,014 97,159 (109,310 ) 4,804,863 1,412 Asset-backed securities 470,320 719 (3,813 ) 467,226 - Mortgage-backed securities Commercial 264,924 4,750 (3,375 ) 266,299 - Agency residential 2,313,265 25,318 (18,059 ) 2,320,524 - Non-agency residential 893 51 (46 ) 898 - Foreign government securities 1,256,983 54,403 (52,205 ) 1,259,181 53 Foreign corporate securities 2,677,589 107,163 (66,401 ) 2,718,351 36 Total fixed maturity securities $ 13,276,206 $ 337,048 $ (255,960 ) $ 13,357,294 $ 1,501 Equity securities $ 122,271 $ 3,401 $ (16,732 ) $ 108,940 $ - (a) Represents the amount of OTTI recognized in AOCI. Amount includes unrealized gains and losses on impaired securities relating to changes in the value of such securities subsequent to the impairment measurement date The amortized cost and market value of fixed maturity securities are shown in the following table by contractual maturity. Mortgage-backed securities are generally more likely to be prepaid than other fixed maturity securities. As the stated maturity of such securities may not be indicative of actual maturities, the totals for mortgage-backed and asset-backed securities are shown separately. At December 31, 2016 At December 31, 2015 Amortized Market Amortized Market (Dollars in thousands) Cost Value Cost Value Fixed maturity securities - available for sale: Due in one year or less $ 956,945 $ 966,970 $ 1,021,200 $ 1,036,016 Due after one year through five years 6,769,585 6,870,056 6,193,426 6,220,563 Due after five years through ten years 2,020,215 2,052,733 2,217,075 2,203,932 Due after ten years 971,674 1,015,959 795,103 841,836 Asset-backed securities 488,824 488,648 470,320 467,226 Mortgage-backed securities: Commercial 308,827 306,932 264,924 266,299 Agency residential 2,415,901 2,405,469 2,313,265 2,320,524 Non-agency residential 642 641 893 898 Total fixed maturity securities $ 13,932,613 $ 14,107,408 $ 13,276,206 $ 13,357,294 The changes in net unrealized appreciation (depreciation) for the Company's investments are derived from the following sources for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 Increase (decrease) during the period between the market value and cost of investments carried at market value, and deferred taxes thereon: Fixed maturity securities $ 85,972 $ (197,231 ) Fixed maturity securities, other-than-temporary impairment 7,734 8,411 Equity securities 2,845 (5,215 ) Other invested assets 60 - Change in unrealized appreciation (depreciation), pre-tax 96,611 (194,035 ) Deferred tax benefit (expense) (22,075 ) 16,979 Deferred tax benefit (expense), other-than-temporary impairment (1,789 ) (3,383 ) Change in unrealized appreciation (depreciation), net of deferred taxes, included in shareholders' equity $ 72,747 $ (180,439 ) The Company frequently reviews all of its fixed maturity, available for sale securities for declines in market value and focuses its attention on securities whose fair value has fallen below 80 The Company's assessments are based on the issuers current and expected future financial position, timeliness with respect to interest and/or principal payments, speed of repayments and any applicable credit enhancements or breakeven constant default rates on mortgage-backed and asset-backed securities, as well as relevant information provided by rating agencies, investment advisors and analysts. The majority of the Company's equity securities available for sale at market value are primarily comprised of mutual fund investments whose underlying securities consist of fixed maturity securities. When a fund's value reflects an unrealized loss, the Company assesses whether the decline in value is temporary or other-than-temporary. In making its assessment, the Company considers the composition of its portfolios and their related markets, reports received from the portfolio managers and discussions with portfolio managers. If the Company determines that the declines are temporary and it has the ability and intent to continue to hold the investments, then the declines are recorded as unrealized losses in accumulated other comprehensive income (loss). If declines are deemed to be other-than-temporary, then the carrying value of the investment is written down to fair value and recorded in net realized capital gains (losses) in the Company's consolidated statements of operations and comprehensive income (loss). Retrospective adjustments are employed to recalculate the values of asset-backed securities. All of the Company's asset-backed and mortgage-backed securities have a pass-through structure. Each acquisition lot is reviewed to recalculate the effective yield. The recalculated effective yield is used to derive a book value as if the new yield were applied at the time of acquisition. Outstanding principal factors from the time of acquisition to the adjustment date are used to calculate the prepayment history for all applicable securities. Conditional prepayment rates, computed with life to date factor histories and weighted average maturities, are used in the calculation of projected prepayments for pass-through security types. The tables below display the aggregate market value and gross unrealized depreciation of fixed maturity and equity securities, by security type and contractual maturity, in each case subdivided according to length of time that individual securities had been in a continuous unrealized loss position for the periods indicated: Duration of Unrealized Loss at December 31, 2016 By Security Type Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities - available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 638,740 $ (5,303 ) $ - $ - $ 638,740 $ (5,303 ) Obligations of U.S. states and political subdivisions 221,088 (11,486 ) 564 (484 ) 221,652 (11,970 ) Corporate securities 1,360,743 (24,023 ) 177,153 (11,735 ) 1,537,896 (35,758 ) Asset-backed securities 150,023 (565 ) 18,786 (721 ) 168,809 (1,286 ) Mortgage-backed securities Commercial 143,554 (3,223 ) 7,184 (655 ) 150,738 (3,878 ) Agency residential 1,618,372 (22,461 ) 189,665 (5,449 ) 1,808,037 (27,910 ) Non-agency residential - - 113 (45 ) 113 (45 ) Foreign government securities 360,289 (12,041 ) 236,820 (45,200 ) 597,109 (57,241 ) Foreign corporate securities 687,599 (12,769 ) 295,500 (51,677 ) 983,099 (64,446 ) Total fixed maturity securities $ 5,180,408 $ (91,871 ) $ 925,785 $ (115,966 ) $ 6,106,193 $ (207,837 ) Equity securities - - 105,507 (12,784 ) 105,507 (12,784 ) Total $ 5,180,408 $ (91,871 ) $ 1,031,292 $ (128,750 ) $ 6,211,700 $ (220,621 ) Duration of Unrealized Loss at December 31, 2016 By Maturity Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities Due in one year or less $ 178,281 $ (1,122 ) $ 78,153 $ (14,318 ) $ 256,434 $ (15,440 ) Due in one year through five years 2,123,113 (26,263 ) 538,130 (84,803 ) 2,661,243 (111,066 ) Due in five years through ten years 680,334 (22,555 ) 86,631 (8,754 ) 766,965 (31,309 ) Due after ten years 286,731 (15,682 ) 7,123 (1,221 ) 293,854 (16,903 ) Asset-backed securities 150,023 (565 ) 18,786 (721 ) 168,809 (1,286 ) Mortgage-backed securities 1,761,926 (25,684 ) 196,962 (6,149 ) 1,958,888 (31,833 ) Total fixed maturity securities $ 5,180,408 $ (91,871 ) $ 925,785 $ (115,966 ) $ 6,106,193 $ (207,837 ) The aggregate market value and gross unrealized losses related to investments in an unrealized loss position at December 31, 2016 were $ 6,211,700 220,621 1.1 91,871 85,078 115,966 112,132 no The Company, given the size of its investment portfolio and capital position, does not have the intent to sell these securities; and it is more likely than not that the Company will not have to sell the security before recovery of its cost basis. In addition, all securities currently in an unrealized loss position are current with respect to principal and interest payments. The tables below display the aggregate market value and gross unrealized depreciation of fixed maturity and equity securities, by security type and contractual maturity, in each case subdivided according to length of time that individual securities had been in a continuous unrealized loss position for the periods indicated: Duration of Unrealized Loss at December 31, 2015 By Security Type Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities - available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 539,177 $ (1,855 ) $ 692 $ (6 ) $ 539,869 $ (1,861 ) Obligations of U.S. states and political subdivisions 6,434 (84 ) 4,917 (806 ) 11,351 (890 ) Corporate securities 1,818,331 (74,161 ) 440,682 (35,149 ) 2,259,013 (109,310 ) Asset-backed securities 348,545 (2,510 ) 67,230 (1,303 ) 415,775 (3,813 ) Mortgage-backed securities Commercial 145,490 (3,375 ) - - 145,490 (3,375 ) Agency residential 1,021,390 (10,014 ) 326,449 (8,045 ) 1,347,839 (18,059 ) Non-agency residential 152 (2 ) 38 (44 ) 190 (46 ) Foreign government securities 227,384 (21,996 ) 216,428 (30,209 ) 443,812 (52,205 ) Foreign corporate securities 821,548 (25,627 ) 295,389 (40,774 ) 1,116,937 (66,401 ) Total fixed maturity securities $ 4,928,451 $ (139,624 ) $ 1,351,825 $ (116,336 ) $ 6,280,276 $ (255,960 ) Equity securities - - 91,907 (16,732 ) 91,907 (16,732 ) Total $ 4,928,451 $ (139,624 ) $ 1,443,732 $ (133,068 ) $ 6,372,183 $ (272,692 ) Duration of Unrealized Loss at December 31, 2015 By Maturity Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities Due in one year or less $ 29,737 $ (1,840 ) $ 74,615 $ (13,440 ) $ 104,352 $ (15,280 ) Due in one year through five years 2,328,805 (62,329 ) 651,228 (59,993 ) 2,980,033 (122,322 ) Due in five years through ten years 969,139 (52,725 ) 206,538 (28,018 ) 1,175,677 (80,743 ) Due after ten years 85,193 (6,829 ) 25,727 (5,493 ) 110,920 (12,322 ) Asset-backed securities 348,545 (2,510 ) 67,230 (1,303 ) 415,775 (3,813 ) Mortgage-backed securities 1,167,032 (13,391 ) 326,487 (8,089 ) 1,493,519 (21,480 ) Total fixed maturity securities $ 4,928,451 $ (139,624 ) $ 1,351,825 $ (116,336 ) $ 6,280,276 $ (255,960 ) The aggregate market value and gross unrealized losses related to investments in an unrealized loss position at December 31, 2015 were $ 6,372,183 272,692 0.7 139,624 46,793 39,037 116,336 72,738 18,447 no The components of net investment income are presented in the table below for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Fixed maturities $ 410,337 $ 433,097 $ 462,757 Equity securities 40,707 45,617 47,193 Short-term investments and cash 1,769 1,225 1,550 Other invested assets Limited partnerships 38,647 14,431 40,868 Other 2,852 1,804 3,619 Gross investment income before adjustments 494,312 496,174 555,988 Funds held interest income (expense) 7,853 10,767 9,471 Future policy benefit reserve income (expense) (1,633 ) (1,907 ) (1,686 ) Gross investment income 500,532 505,034 563,772 Investment expenses (27,447 ) (31,561 ) (33,287 ) Net investment income $ 473,085 $ 473,473 $ 530,485 The Company records results from limited partnership investments on the equity method of accounting with changes in value reported through net investment income. Due to the timing of receiving financial information from these partnerships, the results are generally reported on a one month or quarter lag. If the Company determines there has been a significant decline in value of a limited partnership during this lag period, a loss will be recorded in the period in which the Company identifies the decline. The Company had contractual commitments to invest up to an additional $ 507,244 The Company's other invested assets at December 31, 2016 included $ 378,862 The components of net realized capital gains (losses) are presented in the table below for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Fixed maturity securities, market value: Other-than-temporary impairments $ (31,595 ) $ (102,199 ) $ (39,502 ) Gains (losses) from sales 6,918 (22,310 ) 4,408 Fixed maturity securities, fair value: Gains (losses) from sales (1,586 ) 24 (3,137 ) Gains (losses) from fair value adjustments 1,381 (44 ) (1,498 ) Equity securities, market value: Gains (losses) from sales 1,426 (6,702 ) 426 Equity securities, fair value: Gains (losses) from sales (13,442 ) (7,305 ) 156 Gains (losses) from fair value adjustments 57,686 (45,627 ) 123,196 Sale of Subsidiary (28,032 ) - - Other invested assets 18 - - Short-term investments gain (loss) 10 16 (3 ) Total net realized capital gains (losses) $ (7,216 ) $ (184,147 ) $ 84,046 The Company recorded as net realized capital gains (losses) in the consolidated statements of operations and comprehensive income (loss) both fair value re-measurements and write-downs in the value of securities deemed to be impaired on an other-than-temporary basis as displayed in the table above. The Company had no other-than-temporary impaired securities where the impairment had both a credit and non-credit component. The proceeds and split between gross gains and losses, from sales of fixed maturity and equity securities, are presented in the table below for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Proceeds from sales of fixed maturity securities $ 1,264,271 $ 1,725,917 $ 1,848,268 Gross gains from sales 53,093 47,899 37,427 Gross losses from sales (47,761 ) (70,185 ) (36,156 ) Proceeds from sales of equity securities $ 729,782 $ 642,980 $ 600,970 Gross gains from sales 18,462 27,675 20,900 Gross losses from sales (30,478 ) (41,682 ) (20,318 ) Securities with a carrying value amount of $ 1,415,085

Reserve For Losses, LAE And Fut

Reserve For Losses, LAE And Future Policy Benefit Reserve	12 Months Ended
	Dec. 31, 2016
Reserve For Losses LAE And Future Policy Benefit Reserve [Abstract]
Reserve For Losses LAE And Future Policy Benefit Reserve	3. RESERVE FOR LOSSES, LAE AND FUTURE POLICY BENEFIT RESERVE Reserves for losses and LAE. Activity in the reserve for losses and LAE is summarized for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 2014 Gross reserves at January 1 $ 9,951,798 $ 9,720,813 $ 9,673,240 Less reinsurance recoverables (881,503 ) (655,095 ) (478,151 ) Net reserves at January 1 9,070,295 9,065,718 9,195,089 Incurred related to: Current year 3,434,964 3,129,744 2,915,612 Prior years (295,335 ) (65,029 ) (39,676 ) Total incurred losses and LAE 3,139,629 3,064,715 2,875,936 Paid related to: Current year 745,642 690,030 755,880 Prior years 2,042,972 2,180,076 2,088,772 Total paid losses and LAE 2,788,614 2,870,106 2,844,652 Foreign exchange/translation adjustment (99,859 ) (190,032 ) (160,655 ) Net reserves at December 31 9,321,451 9,070,295 9,065,718 Plus reinsurance recoverables 990,862 881,503 655,095 Gross reserves at December 31 $ 10,312,313 $ 9,951,798 $ 9,720,813 Incurred prior years' reserves decreased by $ 295,335 65,029 39,676 468,749 53,909 60,000 16,720 43,280 173,414 The decrease for 2015 was attributable to favorable development in the reinsurance segments of $ 217,169 152,140 The decrease for 2014 was attributable to favorable development in the reinsurance segments of $ 202,418 137,769 24,973 The following is information about incurred and paid claims development as of December 31, 2016, net of reinsurance, as well as cumulative claim frequency and the total of incurred but not reported liabilities (IBNR) plus expected development on reported claims included within the net incurred claims amounts. Each of the Company's financial reporting segments has been disaggregated into casualty and property business. The casualty and property segregation results in groups that have homogeneous loss development characteristics and are large enough to represent credible trends. Generally, casualty claims take longer to be reported and settled, resulting in longer payout patterns and increased volatility. Property claims on the other hand, tend to be reported and settled quicker and therefore tend to exhibit less volatility. The property business is more exposed to catastrophe losses, which can result in year over year fluctuations in incurred claims depending on the frequency and severity of catastrophes claims in any one accident year. The information about incurred and paid claims development for the years ended December 31, 2012 to December 31, 2015 is presented as supplementary information. These tables present five years of incurred and paid claims development as it is impracticable to retrospectively create the tables for ten years. For the reinsurance groups, for the years prior to 2012, the total of IBNR plus expected development on reported claims was not prepared on an accident year basis. The Company calculated these IBNR amounts in the aggregate for each business unit in total as of prior year end points in time. While business written in the United States would have been allocated to accident year for regulatory reporting purposes, business written outside of the United States would not have been similarly allocated. Attempting to allocate the non-U.S. business IBNR reserves to accident year currently for older year end valuations would require making assumptions and estimates which may not be in line with assumptions that would have been made at the time. A similar situation applies to insurance where the accumulation of the business lines reported in the regulatory filings are not consistent with the breakout of the tables presented below. As a result of not being able to present the information prior to 2012, prospectively an additional year will be added to the tables each reporting year until a ten year table is presented. The Cumulative Number of Reported Claims is shown only for Insurance Casualty as it is impracticable to provide the information for the remaining groups. The reinsurance groups each include pro rata contracts for which ceding companies provide only summary information via a bordereau. This summary information does not include the number of reported claims underlying the paid and reported losses. Therefore, it is not possible to provide this information. The Insurance Property group includes Accident & Health insurance business. This business is written via a master contract and individual claim counts are not provided. This business represents a significant enough portion of the business in the Insurance Property group so that including the number of reported claims for the remaining business would distort any analytics performed on the group. The Cumulative Number of Reported Claims shown for the Insurance Casualty is determined by claim and line of business. For example, a claim event with three claimants in the same line of business is a single claim. However, a claim event with a single claimant that spans two lines of business contributes two claims. The following tables present the ultimate loss and ALAE and the paid loss and ALAE, net of reinsurance for casualty and property, as well as the average annual percentage payout of incurred claims by age, net of reinsurance for each of our disclosed lines of business. U.S. Reinsurance Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 400,944 $ 395,674 $ 328,910 $ 324,870 $ 320,908 69,381 N/A 2013 310,899 388,247 385,498 388,157 147,320 N/A 2014 367,454 383,597 392,300 215,144 N/A 2015 326,321 354,224 248,529 N/A 2016 330,352 272,614 N/A $ 1,785,940 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 9,930 $ 38,398 $ 82,900 $ 143,370 $ 187,125 2013 14,814 48,891 108,736 170,781 2014 18,791 54,220 110,199 2015 19,882 53,592 2016 18,920 $ 540,617 All outstanding liabilities prior to 2012, net of reinsurance 1,103,846 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 2,349,169 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 4.6% 9.0% 14.6% 17.3% 13.6% U.S. Reinsurance Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 937,168 $ 723,126 $ 621,543 $ 608,568 $ 608,182 15,899 N/A 2013 621,644 547,741 494,573 455,623 8,005 N/A 2014 641,489 550,471 473,579 46,920 N/A 2015 679,170 543,978 113,327 N/A 2016 966,314 488,562 N/A $ 3,047,676 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 242,129 $ 401,879 $ 492,597 $ 528,903 $ 546,305 2013 234,163 322,603 381,281 405,331 2014 218,595 321,473 369,615 2015 226,198 327,261 2016 286,082 $ 1,934,594 All outstanding liabilities prior to 2012, net of reinsurance 70,472 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 1,183,554 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 39.6% 21.7% 12.8% 5.7% 2.9% International Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 222,381 $ 145,165 $ 134,433 $ 134,806 $ 118,381 19,893 N/A 2013 182,388 167,152 164,664 146,192 38,720 N/A 2014 194,110 187,335 170,072 66,586 N/A 2015 192,610 179,393 99,975 N/A 2016 183,120 135,120 N/A $ 797,159 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 18,968 $ 30,309 $ 46,356 $ 56,937 $ 66,755 2013 17,945 41,511 55,190 68,508 2014 25,854 45,309 63,412 2015 24,408 49,198 2016 26,582 $ 274,456 All outstanding liabilities prior to 2012, net of reinsurance 132,472 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 655,175 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 14.3% 12.9% 11.0% 9.0% 8.3% International Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 562,356 $ 516,568 $ 464,379 $ 468,016 $ 468,340 3,276 N/A 2013 493,798 446,011 409,911 402,109 5,153 N/A 2014 590,986 536,437 491,539 73,701 N/A 2015 563,857 439,133 68,845 N/A 2016 510,072 151,258 N/A $ 2,311,193 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 200,839 $ 327,627 $ 396,237 $ 420,097 $ 433,538 2013 135,240 272,527 326,747 357,358 2014 163,098 285,019 352,586 2015 145,406 267,899 2016 150,819 $ 1,562,200 All outstanding liabilities prior to 2012, net of reinsurance 135,170 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 884,163 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 34.4% 28.2% 14.0% 6.3% 2.9% Bermuda Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 277,335 $ 257,552 $ 238,136 $ 228,861 $ 236,554 69,097 N/A 2013 223,085 254,485 250,151 259,719 120,413 N/A 2014 205,404 239,078 257,310 163,951 N/A 2015 263,919 293,967 196,691 N/A 2016 282,729 208,938 N/A $ 1,330,278 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 12,975 $ 29,971 $ 52,026 $ 76,682 $ 103,489 2013 17,185 34,498 53,035 78,476 2014 13,846 25,272 43,582 2015 13,664 58,647 2016 45,134 $ 329,328 All outstanding liabilities prior to 2012, net of reinsurance 507,747 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 1,508,697 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 7.7% 8.7% 7.8% 10.1% 11.3% Bermuda Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 233,738 $ 177,683 $ 162,787 $ 158,711 $ 159,285 624 N/A 2013 203,306 147,275 129,687 120,904 1,207 N/A 2014 178,615 157,187 131,588 13,592 N/A 2015 187,738 157,662 45,387 N/A 2016 198,310 123,224 N/A $ 767,749 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 45,233 $ 84,680 $ 115,938 $ 141,516 $ 148,159 2013 31,315 67,966 106,936 114,050 2014 28,540 81,535 101,239 2015 32,687 72,186 2016 26,324 $ 461,959 All outstanding liabilities prior to 2012, net of reinsurance 44,730 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 350,520 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 21.4% 29.6% 21.8% 11.7% 4.2% Insurance Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 349,301 $ 351,107 $ 346,685 $ 347,989 $ 353,145 50,190 15,638 2013 393,201 393,103 392,539 392,829 101,156 21,168 2014 430,554 456,532 454,071 151,768 24,829 2015 518,706 527,109 282,784 25,939 2016 552,006 406,759 23,463 $ 2,279,161 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 33,162 $ 101,258 $ 157,834 $ 213,365 $ 246,294 2013 33,303 117,016 176,280 224,558 2014 41,182 124,865 201,545 2015 44,298 134,658 2016 54,710 $ 861,765 All outstanding liabilities prior to 2012, net of reinsurance 644,177 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 2,061,572 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 9.1% 18.9% 16.0% 13.9% 9.3% Insurance Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 106,229 $ 88,908 $ 81,682 $ 82,382 $ 81,957 52 N/A 2013 111,926 97,870 91,054 91,956 5 N/A 2014 131,505 123,487 119,781 1,044 N/A 2015 172,535 152,580 3,999 N/A 2016 300,127 82,989 N/A $ 746,400 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 56,498 $ 81,712 $ 80,405 $ 81,686 $ 81,830 2013 68,656 92,945 91,653 91,923 2014 81,766 115,913 118,085 2015 102,005 141,010 2016 162,060 $ 594,908 All outstanding liabilities prior to 2012, net of reinsurance 171 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 151,663 (Some amounts may not reconcile due to rounding.) Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 63.1% 27.5% -0.1% 0.9% 0.2% Reconciliation of the Disclosure of Incurred and Paid Claims Development to the Liability for Unpaid Claims and Claim Adjustment Expenses The reconciliation of the net incurred and paid claims development tables to the liability for claims and claim adjustment expenses in the consolidated statement of financial position is as follows. December 31, 2016 (Dollars in thousands) Net outstanding liabilities U.S. Reinsurance Casualty $ 2,349,169 U.S. Reinsurance Property 1,183,554 International Casualty 655,175 International Property 884,163 Bermuda Casualty 1,508,697 Bermuda Property 350,520 Insurance Casualty 2,061,572 Insurance Property 151,663 Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 9,144,514 Reinsurance recoverable on unpaid claims U.S. Reinsurance Casualty 98,282 U.S. Reinsurance Property 84,224 International Casualty 83,912 International Property 79,044 Bermuda Casualty 10,135 Bermuda Property 101,210 Insurance Casualty 498,493 Insurance Property 35,562 Total reinsurance recoverable on unpaid claims 990,862 Insurance lines other than short-duration - Unallocated claims adjustment expenses 132,210 Other 44,727 176,937 Total gross liability for unpaid claims and claim adjustment expense $ 10,312,313 (Some amounts may not reconcile due to rounding.) Reserving Methodology The Company maintains reserves equal to our estimated ultimate liability for losses and loss adjustment expense (LAE) for reported and unreported claims for our insurance and reinsurance businesses. Because reserves are based on estimates of ultimate losses and LAE by underwriting or accident year, the Company uses a variety of statistical and actuarial techniques to monitor reserve adequacy over time, evaluate new information as it becomes known, and adjust reserves whenever an adjustment appears warranted. The Company considers many factors when setting reserves including: (1) exposure base and projected ultimate premium; (2) expected loss ratios by product and class of business, which are developed collaboratively by underwriters and actuaries; (3) actuarial methodologies which analyze loss reporting and payment experience, reports from ceding companies and historical trends, such as reserving patterns, loss payments, and product mix; (4) current legal interpretations of coverage and liability; and (5) economic conditions. Insurance and reinsurance loss and LAE reserves represent the Company's best estimate of its ultimate liability. Actual loss and LAE ultimately paid may deviate, perhaps substantially, from such reserves. Net income (gain or loss) will be impacted in a period in which the change in estimated ultimate loss and LAE is recorded. The detailed data required to evaluate ultimate losses for the Company's insurance business is accumulated from its underwriting and claim systems. Reserving for reinsurance requires evaluation of loss information received from ceding companies. Ceding companies report losses in many forms depending on the type of contract and the agreed or contractual reporting requirements. Generally, pro rata contracts require the submission of a monthly/quarterly account, which includes premium and loss activity for the period with corresponding reserves as established by the ceding company. This information is recorded into the Company's records. For certain pro rata contracts, the Company may require a detailed loss report for claims that exceed a certain dollar threshold or relate to a particular type of loss. Excess of loss and facultative contracts generally require individual loss reporting with precautionary notices provided when a loss reaches a significant percentage of the attachment point of the contract or when certain causes of loss or types of injury occur. Experienced claims staff handles individual loss reports and supporting claim information. Based on evaluation of a claim, the Company may establish additional case reserves in addition to the case reserves reported by the ceding company. To ensure ceding companies are submitting required and accurate data, Everest's Underwriting, Claim, Reinsurance Accounting, and Internal Audit Departments perform various reviews of ceding companies, particularly larger ceding companies, including on-site audits. The Company segments both reinsurance and insurance reserves into exposure groupings for actuarial analysis. The Company assigns business to exposure groupings so that the underlying exposures have reasonably homogeneous loss development characteristics and are large enough to facilitate credible estimation of ultimate losses. The Company periodically reviews its exposure groupings and may change groupings over time as business changes. The Company currently uses approximately 200 The Company uses a variety of actuarial methodologies, such as the expected loss ratio method, chain ladder methods, and Bornhuetter-Ferguson methods, supplemented by judgment where appropriate, to estimate ultimate loss and LAE for each exposure group. Expected Loss Ratio Method: The expected loss ratio method uses earned premium times an expected loss ratio to calculate ultimate losses for a given underwriting or accident year. This method relies entirely on expectation to project ultimate losses with no consideration given to actual losses. As such, it may be appropriate for an immature underwriting or accident year where few, if any, losses have been reported or paid, but less appropriate for a more mature year. Chain Ladder Method: Chain ladder methods use a standard loss development triangle to project ultimate losses. Age-to-age development factors are selected for each development period and combined to calculate age-to-ultimate development factors which are then applied to paid or reported losses to project ultimate losses. This method relies entirely on actual paid or reported losses to project ultimate losses. No other factors such as changes in pricing or other expectations are taken into account. It is most appropriate for groups with homogeneous, stable experience where past development patterns are expected to continue in the future. It is least appropriate for groups which have changed significantly over time or which are more volatile. Bornhuetter-Ferguson Method: The Bornhuetter-Ferguson method is a combination of the expected loss ratio method and the chain ladder method. Ultimate losses are projected based partly on actual paid or reported losses and partly on expectation. Incurred but not reported (IBNR) reserves are calculated using earned premium, an a priori loss ratio, and selected age-to-age development factors and added to actual reported (paid) losses to determine ultimate losses. It is more responsive to actual reported or paid development than the expected loss ratio method but less responsive than the chain ladder method. The reliability of the method depends on the accuracy of the selected a priori loss ratio. Although the Company uses similar actuarial methods for both short tail and long tail lines, the faster reporting of experience for the short tail lines allows the Company to have greater confidence in its estimates of ultimate losses for short tail lines at an earlier stage than for long tail lines. As a result, the Company utilizes, as well, exposure-based methods to estimate its ultimate losses for longer tail lines, especially for immature underwriting or accident years. For both short and long tail lines, the Company supplements these general approaches with analytically based judgments. Key actuarial assumptions contain no explicit provisions for reserve uncertainty nor does the Company supplement the actuarially determined reserves for uncertainty. Carried reserves at each reporting date are the Company's best estimate of ultimate unpaid losses and LAE at that date. The Company completes detailed reserve studies for each exposure group annually for both reinsurance and insurance operations. The completed annual reserve studies are "rolled-forward" for each accounting period until the subsequent reserve study is completed. Analyzing the roll-forward process involves comparing actual reported losses to expected losses based on the most recent reserve study. The Company analyzes significant variances between actual and expected losses and post adjustments to its reserves as warranted. The Company continues to receive claims under expired insurance and reinsurance contracts asserting injuries and/or damages relating to or resulting from environmental pollution and hazardous substances, including asbestos. Environmental claims typically assert liability for (a) the mitigation or remediation of environmental contamination or (b) bodily injury or property damage caused by the release of hazardous substances into the land, air or water. Asbestos claims typically assert liability for bodily injury from exposure to asbestos or for property damage resulting from asbestos or products containing asbestos. The Company's reserves include an estimate of the Company's ultimate liability for A&E claims. The Company's A&E liabilities emanate from Mt. McKinley's direct insurance business and Everest Re's assumed reinsurance business. All of the contracts of insurance and reinsurance, under which the Company has received claims during the past three years, expired more than 20 years ago. There are significant uncertainties surrounding the Company's reserves for its A&E losses. A&E exposures represent a separate exposure group for monitoring and evaluating reserve adequacy. The following table summarizes incurred losses with respect to A&E reserves on both a gross and net of reinsurance basis for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 2014 Gross basis: Beginning of period reserves $ 433,117 $ 476,205 $ 402,461 Incurred losses 73,336 40,000 142,233 Paid losses (65,342 ) (83,088 ) (68,489 ) End of period reserves $ 441,111 $ 433,117 $ 476,205 Net basis: Beginning of period reserves $ 319,620 $ 458,211 $ 386,677 Incurred losses 53,909 38,440 137,769 Paid losses (54,457 ) (177,031 ) (66,235 ) End of period reserves $ 319,072 $ 319,620 $ 458,211 On July 13, 2015, the Company sold Mt. McKinley, a Delaware domiciled insurance company and wholly-owned subsidiary of the Company to Clearwater Insurance Company, a Delaware domiciled insurance company. Concurrently with the closing, the Company entered into a retrocession treaty with an affiliate of Clearwater Insurance Company. Per the retrocession treaty, the Company retroceded 100 140,279 440,279 300,000 Reinsurance Receivables. Reinsurance receivables for both paid and recoverable on unpaid losses totaled $ 1,018,325 894,037 175,042 17.2 129,040 12.7 109,392 10.7 78,225 7.7 51,124 5.0 5 Future Policy Benefit Reserve. Activity in the reserve for future policy benefits is summarized for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 2014 Balance at beginning of year $ 58,910 $ 59,820 $ 59,512 Liabilities assumed 175 315 250 Adjustments to reserves 303 2,310 4,724 Benefits paid in the current year (4,315 ) (3,535 ) (4,667 ) Balance at end of year $ 55,074 $ 58,910 $ 59,820 (Some amounts may not reconcile due to rounding.)

Fair Value

Fair Value	12 Months Ended
	Dec. 31, 2016
Fair Value [Abstract]
Fair Value	4. FAIR VALUE GAAP guidance regarding fair value measurements address how companies should measure fair value when they are required to use fair value measures for recognition or disclosure purposes under GAAP and provides a common definition of fair value to be used throughout GAAP. It defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly fashion between market participants at the measurement date. In addition, it establishes a three-level valuation hierarchy for the disclosure of fair value measurements. The valuation hierarchy is based on the transparency of inputs to the valuation of an asset or liability. The level in the hierarchy within which a given fair value measurement falls is determined based on the lowest level input that is significant to the measurement, with Level 1 being the highest priority and Level 3 being the lowest priority. The levels in the hierarchy are defined as follows: Level 1: Inputs to the valuation methodology are observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in an active market; Level 2: Inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument; Level 3: Inputs to the valuation methodology are unobservable and significant to the fair value measurement. The Company's fixed maturity and equity securities are primarily managed by third party investment asset managers. The investment asset managers obtain prices from nationally recognized pricing services. These services seek to utilize market data and observations in their evaluation process. They use pricing applications that vary by asset class and incorporate available market information and when fixed maturity securities do not trade on a daily basis the services will apply available information through processes such as benchmark curves, benchmarking of like securities, sector groupings and matrix pricing. In addition, they use model processes, such as the Option Adjusted Spread model to develop prepayment and interest rate scenarios for securities that have prepayment features. In limited instances where prices are not provided by pricing services or in rare instances when a manager may not agree with the pricing service, price quotes on a non-binding basis are obtained from investment brokers. The investment asset managers do not make any changes to prices received from either the pricing services or the investment brokers. In addition, the investment asset managers have procedures in place to review the reasonableness of the prices from the service providers and may request verification of the prices. In addition, the Company continually performs analytical reviews of price changes and tests the prices on a random basis to an independent pricing source. No material variances were noted during these price validation procedures. In limited situations, where financial markets are inactive or illiquid, the Company may use its own assumptions about future cash flows and risk-adjusted discount rates to determine fair value. Due to the unavailability of prices for forty-two private placement securities, the investment manager's valuation committee valued the forty-two 86,536 two two 3,593 The Company internally manages a public equity portfolio which had a fair value at December 31, 2016 and 2015 of $ 256,041 253,575 Equity securities denominated in U.S. currency with quoted prices in active markets for identical assets are categorized as level 1 since the quoted prices are directly observable. Equity securities traded on foreign exchanges are categorized as level 2 due to the added input of a foreign exchange conversion rate to determine fair or market value. The Company uses foreign currency exchange rates published by nationally recognized sources. All categories of fixed maturity securities listed in the tables below are generally categorized as level 2, since a particular security may not have traded but the pricing services are able to use valuation models with observable market inputs such as interest rate yield curves and prices for similar fixed maturity securities in terms of issuer, maturity and seniority. For foreign government securities and foreign corporate securities, the fair values provided by the third party pricing services in local currencies, and where applicable, are converted to U.S. dollars using currency exchange rates from nationally recognized sources. The fixed maturities with fair values categorized as level 3 result when prices are not available from the nationally recognized pricing services. The asset managers will then obtain non-binding price quotes for the securities from brokers. The single broker quotes are provided by market makers or broker-dealers who are recognized as market participants in the markets in which they are providing the quotes. The prices received from brokers are reviewed for reasonableness by the third party asset managers and the Company. If the broker quotes are for foreign denominated securities, the quotes are converted to U.S. dollars using currency exchange rates from nationally recognized sources. In limited circumstances when broker prices are not available for private placements, the Company will value the securities using comparable market information. The composition and valuation inputs for the presented fixed maturities categories are as follows: · U.S. Treasury securities and obligations of U.S. government agencies and corporations are primarily comprised of U.S. Treasury bonds and the fair value is based on observable market inputs such as quoted prices, reported trades, quoted prices for similar issuances or benchmark yields; · Obligations of U.S. states and political subdivisions are comprised of state and municipal bond issuances and the fair values are based on observable market inputs such as quoted market prices, quoted prices for similar securities, benchmark yields and credit spreads; · Corporate securities are primarily comprised of U.S. corporate and public utility bond issuances and the fair values are based on observable market inputs such as quoted market prices, quoted prices for similar securities, benchmark yields and credit spreads; · Asset-backed and mortgage-backed securities fair values are based on observable inputs such as quoted prices, reported trades, quoted prices for similar issuances or benchmark yields and cash flow models using observable inputs such as prepayment speeds, collateral performance and default spreads; · Foreign government securities are comprised of global non-U.S. sovereign bond issuances and the fair values are based on observable market inputs such as quoted market prices, quoted prices for similar securities and models with observable inputs such as benchmark yields and credit spreads and then, where applicable, converted to U.S. dollars using an exchange rate from a nationally recognized source; · Foreign corporate securities are comprised of global non-U.S. corporate bond issuances and the fair values are based on observable market inputs such as quoted market prices, quoted prices for similar securities and models with observable inputs such as benchmark yields and credit spreads and then, where applicable, converted to U.S. dollars using an exchange rate from a nationally recognized source. The Company sold seven The Company sold six 22,530 7 zero 3 445,627 2,238.83 no The Company sold one 6,706 25 zero 3 36,231 7,142.83 no At December 31, 2016 and 2015, the fair value for these equity put options was $ 22,059 40,705 The Company's liability for equity index put options is categorized as level 3 since there is no active market for these seven long dated equity put options. The fair values for these options are calculated by the Company using an industry accepted pricing model, Black-Scholes. The model inputs and assumptions are: risk free interest rates, equity market indexes values, volatilities and dividend yields and duration. The model results are then adjusted for the Company's credit default swap rate. All of these inputs and assumptions are updated quarterly. One of the option contacts is in British Pound Sterling so the fair value for this contract is converted to U.S. dollars using an exchange rate from a nationally recognized source. The following table presents the fair value measurement levels for all assets and liabilities, which the Company has recorded at fair value (fair and market value) as of the periods indicated: Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2016 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, market value U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,130,315 $ - $ 1,130,315 $ - Obligations of U.S. States and political subdivisions 729,984 - 729,984 - Corporate securities 5,155,281 - 5,090,084 65,197 Asset-backed securities 488,648 - 488,648 - Mortgage-backed securities Commercial 306,932 - 306,932 - Agency residential 2,405,469 - 2,405,469 - Non-agency residential 641 - 641 - Foreign government securities 1,258,160 - 1,258,160 - Foreign corporate securities 2,631,978 - 2,629,440 2,538 Total fixed maturities, market value 14,107,408 - 14,039,673 67,735 Fixed maturities, fair value - - - - Equity securities, market value 119,067 105,507 13,560 - Equity securities, fair value 1,010,085 949,523 60,562 - Liabilities: Equity index put option contracts $ 22,059 $ - $ - $ 22,059 In addition, $ 18,801 There were no The following table presents the fair value measurement levels for all assets and liabilities, which the Company has recorded at fair value (fair and market value) as of the periods indicated: Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2015 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, market value U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 816,877 $ - $ 816,877 $ - Obligations of U.S. States and political subdivisions 703,075 - 703,075 - Corporate securities 4,804,863 - 4,800,930 3,933 Asset-backed securities 467,226 - 467,226 - Mortgage-backed securities Commercial 266,299 - 266,299 - Agency residential 2,320,524 - 2,320,524 - Non-agency residential 898 - 898 - Foreign government securities 1,259,181 - 1,259,181 - Foreign corporate securities 2,718,351 - 2,716,758 1,593 Total fixed maturities, market value 13,357,294 - 13,351,768 5,526 Fixed maturities, fair value 2,102 - 2,102 - Equity securities, market value 108,940 91,907 17,033 - Equity securities, fair value 1,337,733 1,275,666 62,067 - Liabilities: Equity index put option contracts $ 40,705 $ - $ - $ 40,705 The following tables present the activity under Level 3, fair value measurements using significant unobservable inputs by asset type, for the periods indicated: December 31, 2016 December 31, 2015 Corporate Foreign Corporate Foreign (Dollars in thousands) Securities CMBS Corporate Total Securities CMBS Corporate Total Beginning balance $ 3,933 $ - $ 1,593 $ 5,526 $ - $ 8,597 $ 7,166 $ 15,763 Total gains or (losses) (realized/unrealized) Included in earnings 100 - (1,193 ) (1,093 ) 4 - (9,480 ) (9,476 ) Included in other comprehensive income (loss) 41 16 - 57 (96 ) - 3,908 3,812 Purchases, issuances and settlements 63,054 (44 ) 2,138 65,148 3,626 - - 3,626 Transfers in and/or (out) of Level 3 (1,931 ) 28 - (1,903 ) 399 (8,597 ) (1 ) (8,199 ) Ending balance $ 65,197 $ - $ 2,538 $ 67,735 $ 3,933 $ - $ 1,593 $ 5,526 The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date $ - $ - $ - $ - $ - $ - $ 9,721 $ 9,721 (Some amounts may not reconcile due to rounding.) The net transfers to/(from) level 3, fair value measurements using significant unobservable inputs were ($ 1,903 8,199 The following table presents the activity under Level 3, fair value measurements using significant unobservable inputs for equity index put option contracts, for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 Liabilities: Balance, beginning of period $ 40,705 $ 47,022 Total (gains) or losses (realized/unrealized) Included in earnings (18,646 ) (6,317 ) Included in other comprehensive income (loss) - - Purchases, issuances and settlements - - Transfers in and/or (out) of Level 3 - - Balance, end of period $ 22,059 $ 40,705 The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date $ - $ - (Some amounts may not reconcile due to rounding.)

Credit Facilities

Credit Facilities	12 Months Ended
	Dec. 31, 2016
Credit Facilities [Abstract]
Credit Facilities	5. CREDIT FACILITIES The Company has two 1,000,000 Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Credit facility fees incurred $ 793 $ 756 $ 659 The terms and outstanding amounts for each facility are discussed below: Group Credit Facility Effective May 26, 2016, Group, Everest Reinsurance (Bermuda), Ltd. ("Bermuda Re") and Everest International Reinsurance, Ltd. ("Everest International"), both direct subsidiaries of Group, entered into a five 800,000 four 800,000 200,000 an adjusted London Interbank Offered Rate ("LIBOR") plus a margin. prime commercial lending rate established by Wells Fargo Bank Federal Funds Rate plus 0.5 one month LIBOR Rate plus 1.0 600,000 The Group Credit Facility requires Group to maintain a debt to capital ratio of not greater than 0.35 5,370,979 25 25 5,584,382 The following table summarizes the outstanding letters of credit and/or borrowings for the periods indicated: (Dollars in thousands) At December 31, 2016 At December 31, 2015 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Wells Fargo Bank Group Credit Facility Tranche One $ 200,000 $ - $ 200,000 $ - Tranche Two 600,000 - 600,000 2,488 12/12/2016 - 478,233 12/31/2017 - 447,178 12/31/2016 Total Wells Fargo Bank Group Credit Facility $ 800,000 $ 478,233 $ 800,000 $ 449,666 Bermuda Re Letter of Credit Facility Effective December 30, 2016, Bermuda Re renewed its letter of credit issuance facility with Citibank N.A. referred to as the "Bermuda Re Letter of Credit Facility", which commitment is reconfirmed annually with updated fees. The current renewal of the Bermuda Re Letter of Credit Facility provides for the issuance of up to $ 200,000 0.35 % per annum of the principal amount of issued standard letters of credit (expiry of 15 months or less) 0.45 % per annum of the principal amount of issued extended tenor letters of credit (expiry maximum of up to 60 months). 0.15 The following table summarizes the outstanding letters of credit for the periods indicated: (Dollars in thousands) At December 31, 2016 At December 31, 2015 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Citibank Bilateral Letter of Credit Agreement $ 200,000 $ 4,058 2/28/2017 $ 300,000 $ 3,672 11/24/2016 3,672 11/24/2017 67,783 12/31/2016 69,404 12/31/2017 179 8/30/2017 269 8/30/2018 316 12/31/2017 1,163 12/31/2018 - 93,180 12/30/2020 99,521 12/31/2019 Total Citibank Bilateral Agreement $ 200,000 $ 171,746 $ 300,000 $ 171,471 Everest International Credit Facility Effective November 9, 2016, Everest International renewed its credit facility with Lloyd's of London Bank ("Everest International Credit Facility"). The current renewal of the Everest International Credit Facility has a four 140,000 0.1 0.35 The Everest International Credit Facility requires Group to maintain a debt to capital ratio of not greater than 0.35 5,326,009 70 25 25 5,584,382 The following table summarizes the outstanding letters of credit for the periods indicated: (Dollars in thousands) At December 31, 2016 At December 31, 2015 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Lloyd's Bank plc £ 140,000 £ 130,606 12/31/2019 £ 175,000 £ 164,961 12/31/2019 - - - - Total Lloyd's Bank Credit Facility £ 140,000 £ 130,606 £ 175,000 £ 164,961 Holdings Credit Facility - Expired Effective August 15, 2011 150,000

Senior Notes

Senior Notes	12 Months Ended
	Dec. 31, 2016
Senior Notes [Abstract]
Senior Notes	6. SENIOR NOTES The table below displays Holdings' outstanding senior notes. Market value is based on quoted market prices, but due to limited trading activity, these senior notes are considered Level 2 in the fair value hierarchy. December 31, 2016 December 31, 2015 Consolidated Balance Consolidated Balance (Dollars in thousands) Date Issued Date Due Principal Amounts Sheet Amount Market Value Sheet Amount Market Value 4.868 06/05/2014 06/01/2044 400,000 $ 396,714 $ 383,612 $ 396,594 $ 381,204 5.40% Senior notes 10/12/2004 10/15/2014 250,000 - - - - On June 5, 2014, Holdings issued $400,000 thousand of 30 year senior notes at 4.868%, which will mature on June 1, 2044. Interest will be paid semi-annually on June 1 and December 1 of each year. The proceeds from the issuance have been used in part to pay off the $ 250,000 5.40 October 15, 2014 Interest expense incurred in connection with these senior notes is as follows for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Interest expense incurred $ 19,472 $ 19,472 $ 21,818

Long Term Subordinated Notes

Long Term Subordinated Notes	12 Months Ended
	Dec. 31, 2016
Long Term Subordinated Notes [Abstract]
Long Term Subordinated Notes	7. LONG TERM SUBORDINATED NOTES The table below displays Holdings' outstanding fixed to floating rate long term subordinated notes. Market value is based on quoted market prices, but due to limited trading activity, these subordinated notes are considered Level 2 in the fair value hierarchy. Maturity Date December 31, 2016 December 31, 2015 Original Consolidated Balance Consolidated Balance (Dollars in thousands) Date Issued Principal Amount Scheduled Final Sheet Amount Market Value Sheet Amount Market Value 6.6 04/26/2007 $ 400,000 05/15/2037 05/01/2067 $ 236,462 $ 204,636 $ 236,364 $ 208,978 During the fixed rate interest period from May 3, 2007 May 14, 2017 6.6 Holdings can redeem the long term subordinated notes prior to May 15, 2017, in whole but not in part at the applicable redemption price, which will equal the greater of (a) 100 0.25 0.50 On March 19, 2009, Group announced the commencement of a cash tender offer for any and all of the 6.60% fixed to floating rate long term subordinated notes. Upon expiration of the tender offer, the Company had reduced its outstanding debt by $ 161,441 Interest expense incurred in connection with these long term subordinated notes is as follows for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Interest expense incurred $ 15,749 $ 15,749 $ 15,749

Collateralized Reinsurance And

Collateralized Reinsurance And Trust Agreements	12 Months Ended
	Dec. 31, 2016
Collateralized Reinsurance And Trust Agreements [Abstract]
Collateralized Reinsurance And Trust Agreements	8. COLLATERALIZED REINSURANCE AND TRUST AGREEMENTS Certain subsidiaries of Group have established trust agreements, which effectively use the Company's investments as collateral, as security for assumed losses payable to certain non-affiliated ceding companies. At December 31, 2016, the total amount on deposit in trust accounts was $ 466,029 The Company reinsures some of its catastrophe exposures with the segregated accounts of Mt. Logan Re. Mt. Logan Re is a Class 3 insurer registered in Bermuda effective February 27, 2013 under The Segregated Accounts Companies Act 2000 and 100 The following table summarizes the premiums and losses that are ceded by the Company to Mt. Logan Re segregated accounts and assumed by the Company from Mt. Logan Re segregated accounts. Years Ended December 31, Mt. Logan Re Segregated Accounts 2016 2015 2014 (Dollars in thousands) Ceded written premiums 197,537 234,001 138,362 Ceded earned premiums 191,568 226,385 139,317 Ceded losses and LAE 44,802 40,807 30,598 Assumed written premiums 14,563 15,421 13,889 Assumed earned premiums 14,563 15,421 13,889 Assumed losses and LAE - - - Each segregated account is permitted to assume net risk exposures equal to its amount of preferred shares and posted collateral, which in the aggregate was $ 932,243 798,548 55,536 50,000 On April 24, 2014, the Company entered into two 250,000 200,000 On November 18, 2014, the Company entered into a collateralized reinsurance agreement with Kilimanjaro Re to provide the Company with catastrophe reinsurance coverage. This agreement is a multi-year reinsurance contract which covers specified earthquake events. The agreement provides up to $ 500,000 On December 1, 2015 the Company entered into two 300,000 325,000 Kilimanjaro has financed the various property catastrophe reinsurance coverage by issuing catastrophe bonds to unrelated, external investors. On April 24, 2014, Kilimanjaro issued $ 450,000 500,000 625,000

Operating Lease Agreements

Operating Lease Agreements	12 Months Ended
	Dec. 31, 2016
Operating Lease Agreements [Abstract]
Operating Lease Agreements	9 OPERATING LEASE AGREEMENTS The future minimum rental commitments, exclusive of cost escalation clauses, at December 31, 2016, for all of the Company's operating leases with remaining non-cancelable terms in excess of one year are as follows: (Dollars in thousands) 2017 $ 14,818 2018 15,302 2019 15,801 2020 15,170 2021 6,307 Thereafter 23,769 Net commitments $ 91,168 (Some amounts may not reconcile due to rounding.) All of these leases, the expiration terms of which range from 2018 2027 17,663 15,986 15,519

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Taxes [Abstract]
Income Taxes	10. INCOME TAXES Under Bermuda law, no income or capital gains taxes are imposed on Group and its Bermuda Subsidiaries. The Minister of Finance of Bermuda has assured Group and its Bermuda subsidiaries that, pursuant to The Exempted Undertakings Tax Protection Amendment Act of 2011, they will be exempt until 2035 from imposition of any such taxes. All of the income of Group's non-Bermuda subsidiaries is subject to the applicable federal, foreign, state and local taxes on corporations. Additionally, the income of the foreign branches of the Company's insurance operating companies, in particular the UK branch of Bermuda Re, is subject to various rates of income tax. Group's U.S. subsidiaries conduct business in and are subject to taxation in the U.S. Should the U.S. subsidiaries distribute current or accumulated earnings and profits in the form of dividends or otherwise, the Company would be subject to an accrual of 5 no Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Current tax expense (benefit): U.S. $ 30,971 $ 90,486 $ 143,297 Non-U.S. 4,228 14,811 22,575 Total current tax expense (benefit) 35,199 105,297 165,872 Deferred tax expense (benefit): U.S. 70,995 28,724 21,780 Non-U.S. (2,694 ) - - Total deferred tax expense (benefit) 68,301 28,724 21,780 Total income tax expense (benefit) $ 103,500 $ 134,021 $ 187,652 (Some amounts may not reconcile due to rounding.) The weighted average expected tax provision has been calculated using the pre-tax income (loss) in each jurisdiction multiplied by that jurisdiction's applicable statutory tax rate. Reconciliation of the difference between the provision for income taxes and the expected tax provision at the weighted average tax rate for the periods indicated is provided below: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Underwriting gain (loss) $ 208,821 $ 480,602 $ 294,386 $ 493,025 $ 228,194 $ 585,327 Net investment income 230,691 242,393 234,709 238,763 260,501 269,985 Net realized capital gains (losses) (16,465 ) 9,249 (159,268 ) (24,879 ) 78,006 6,040 Net derivative gain (loss) - 18,647 - 6,317 - (11,599 ) Corporate expenses (8,276 ) (18,955 ) (7,179 ) (16,075 ) (7,252 ) (16,169 ) Interest, fee and bond issue cost amortization expense (35,435 ) (793 ) (35,434 ) (756 ) (37,970 ) (563 ) Other income (expense) (5,536 ) (5,101 ) 27,706 60,574 (1,561 ) 38,869 Pre-tax income (loss) $ 373,801 $ 726,043 $ 354,920 $ 756,970 $ 519,918 $ 866,890 Expected tax provision at the applicable statutory rate(s) 130,830 2,387 124,221 14,848 181,972 21,279 Increase (decrease) in taxes resulting from: Tax exempt income (9,078 ) - (10,004 ) - (12,231 ) - Dividend received deduction (4,913 ) - (5,364 ) - (5,910 ) - Proration 1,931 - 2,160 - 1,835 - Tax audit settlement (18,644 ) - - - - - Other 1,840 (853 ) 8,197 (37 ) (588 ) 1,296 Total income tax provision $ 101,966 $ 1,534 $ 119,210 $ 14,811 $ 165,077 $ 22,575 (Some amounts may not reconcile due to rounding.) During 2016, the Internal Revenue Service ("IRS") completed its audit of the Company for the 2009 through 2013 tax years and issued a final Revenue Agent Report ("RAR"). The RAR reflected that the IRS owed the Company a net refund for the five 44,241 3,396 34,234 5,000 The Company has no reserve for uncertain tax positions. Deferred Income taxes reflect the tax effect of the temporary differences between the value of assets and liabilities for financial statement purposes and such values as measured by the U.S. tax laws and regulations. The principal items making up the net deferred income tax assets/ (liabilities) are as follows for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 Deferred tax assets: Loss reserves $ 104,547 $ 169,771 Unearned premium reserves 37,573 40,624 Net unrealized losses on benefit plans 35,271 33,971 Unrealized foreign currency losses 27,410 - Benefit plan liability 14,576 18,747 Net operating loss carryforward 6,341 3,412 Uncollectible reinsurance reserves 5,534 5,534 Investment impairments 3,093 23,481 Deferred expenses 2,884 3,182 Foreign tax credits - 11,836 Alternative minimum tax credits - 7,604 Other assets 14,843 16,347 Total deferred tax assets 252,071 334,509 Deferred tax liabilities: Net fair value income 78,740 80,268 Deferred acquisition costs 26,652 33,227 Net unrealized investment gains 20,698 7,491 Partnership investments 11,912 6,006 Gain on tender of debt 10,958 16,437 Unrealized foreign currency gains - 3,778 Other liabilities 3,086 5,860 Total deferred tax liabilities 152,045 153,067 Net deferred tax assets 100,026 181,442 Less: Valuation allowance (3,846 ) (3,412 ) Total net deferred tax assets $ 96,181 $ 178,030 (Some amounts may not reconcile due to rounding.) At December 31, 2016, the Company has no 3,846 3,412 The Company has recorded tax benefits related to share-based compensation deductions for dividends on restricted stock, vesting of restricted stock and exercised stock options in 2016 and 2015, respectively of $ 7,458 8,064

Reinsurance

Reinsurance	12 Months Ended
	Dec. 31, 2016
Reinsurance [Abstract]
Reinsurance	11. REINSURANCE The Company utilizes reinsurance agreements to reduce its exposure to large claims and catastrophic loss occurrences. These agreements provide for recovery from reinsurers of a portion of losses and LAE under certain circumstances without relieving the Company of its underlying obligations to the policyholders. Losses and LAE incurred and premiums earned are reported after deduction for reinsurance. In the event that one or more of the reinsurers were unable to meet their obligations under these reinsurance agreements, the Company would not realize the full value of the reinsurance recoverable balances. The Company may hold partial collateral, including letters of credit and funds held, under these agreements. See also Note 1C, Note 3 and Note 8. Premiums written and earned and incurred losses and LAE are comprised of the following for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Written premiums: Direct $ 1,819,588 $ 1,569,791 $ 1,227,645 Assumed 4,214,286 4,321,922 4,535,231 Ceded (762,969 ) (709,402 ) (630,446 ) Net written premiums $ 5,270,905 $ 5,182,311 $ 5,132,430 Premiums earned: Direct $ 1,694,702 $ 1,491,163 $ 1,183,498 Assumed 4,361,944 4,500,526 4,419,322 Ceded (736,180 ) (698,847 ) (559,113 ) Net premiums earned $ 5,320,466 $ 5,292,842 $ 5,043,707 Incurred losses and LAE: Direct $ 1,496,455 $ 1,268,896 $ 1,100,037 Assumed 2,121,902 2,152,633 2,160,663 Ceded (478,728 ) (356,814 ) (384,764 ) Net incurred losses and LAE $ 3,139,629 $ 3,064,715 $ 2,875,936

Comprehensive Income (Loss)

Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2016
Comprehensive Income (Loss) [Abstract]
Comprehensive Income (Loss)	12. COMPREHENSIVE INCOME (LOSS) The following table presents the components of comprehensive income (loss) in the consolidated statements of operations for the periods indicated: Years Ended December 31, 2016 2015 2014 (Dollars in thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary $ 65,645 $ (13,961 ) $ 51,684 $ (333,657 ) $ 54,502 $ (279,155 ) $ (4,278 ) $ 11,653 $ 7,375 URA(D) on securities - OTTI 7,734 (1,789 ) 5,945 8,411 (3,383 ) 5,028 (10,078 ) 3,407 (6,671 ) Reclassification of net realized losses (gains) included in net income (loss) 23,232 (8,114 ) 15,118 131,211 (37,523 ) 93,688 34,668 (13,276 ) 21,392 Foreign currency translation adjustments (53,802 ) (1,539 ) (55,341 ) (140,918 ) 29,388 (111,530 ) (111,145 ) 15,728 (95,417 ) Benefit plan actuarial net gain (loss) (11,520 ) 4,032 (7,488 ) 8,740 (3,059 ) 5,681 (60,169 ) 21,059 (39,110 ) Reclassification of benefit plan liability amortization included in net income (loss) 7,805 (2,732 ) 5,073 9,563 (3,347 ) 6,216 4,647 (1,627 ) 3,020 Total other comprehensive income (loss) $ 39,094 $ (24,103 ) $ 14,991 $ (316,650 ) $ 36,578 $ (280,072 ) $ (146,355 ) $ 36,944 $ (109,411 ) The following table presents details of the amounts reclassified from AOCI for the periods indicated: Years Ended December 31, Affected line item within the statements of AOCI component 2016 2015 operations and comprehensive income (loss) (Dollars in thousands) URA(D) on securities $ 23,232 $ 131,211 Other net realized capital gains (losses) (8,114 ) (37,523 ) Income tax expense (benefit) $ 15,118 $ 93,688 Net income (loss) Benefit plan net gain (loss) $ 7,805 $ 9,563 Other underwriting expenses (2,732 ) (3,347 ) Income tax expense (benefit) $ 5,073 $ 6,216 Net income (loss) The following table presents the components of accumulated other comprehensive income (loss), net of tax, in the consolidated balance sheets for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 Beginning balance of URA (D) on securities $ 42,811 $ 223,250 Current period change in URA (D) of investments - temporary 66,802 (185,467 ) Current period change in URA (D) of investments - non-credit OTTI 5,945 5,028 Ending balance of URA (D) on securities 115,558 42,811 Beginning balance of foreign currency translation adjustments (211,477 ) (99,947 ) Current period change in foreign currency translation adjustments (55,341 ) (111,530 ) Ending balance of foreign currency translation adjustments (266,818 ) (211,477 ) Beginning balance of benefit plan net gain (loss) (63,089 ) (74,986 ) Current period change in benefit plan net gain (loss) (2,415 ) 11,897 Ending balance of benefit plan net gain (loss) (65,504 ) (63,089 ) Ending balance of accumulated other comprehensive income (loss) $ (216,764 ) $ (231,755 )

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Employee Benefit Plans [Abstract]
Employee Benefit Plans	13. EMPLOYEE BENEFIT PLANS Defined Benefit Pension Plans. The Company maintains both qualified and non-qualified defined benefit pension plans for its U.S. employees employed prior to April 1, 2010. Generally, the Company computes the benefits based on average earnings over a period prescribed by the plans and credited length of service. The Company's non-qualified defined benefit pension plan, affected in October 1995, provides compensating pension benefits for participants whose benefits have been curtailed under the qualified plan due to Internal Revenue Code limitations. Although not required to make contributions under IRS regulations, the following table summarizes the Company's contributions to the defined benefit pension plans for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Company contributions $ 30,821 $ 5,949 $ 16,484 The following table summarizes the Company's pension expense for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Pension expense $ 17,188 $ 22,682 $ 18,543 The following table summarizes the status of these defined benefit plans for U.S. employees for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 Change in projected benefit obligation: Benefit obligation at beginning of year $ 254,022 $ 270,065 Service cost 10,924 12,511 Interest cost 9,485 10,759 Actuarial (gain)/loss 12,155 (18,595 ) Benefits paid (4,733 ) (20,718 ) Projected benefit obligation at end of year 281,853 254,022 Change in plan assets: Fair value of plan assets at beginning of year 135,087 157,090 Actual return on plan assets 10,331 (7,234 ) Actual contributions during the year 30,821 5,949 Benefits paid (4,733 ) (20,718 ) Fair value of plan assets at end of year 171,506 135,087 Funded status at end of year $ (110,348 ) $ (118,936 ) (Some amounts may not reconcile due to rounding.) Amounts recognized in the consolidated balance sheets for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Other assets (due beyond one year) $ - $ - Other liabilities (due within one year) (2,371 ) (1,869 ) Other liabilities (due beyond one year) (107,977 ) (117,067 ) Net amount recognized in the consolidated balance sheets $ (110,348 ) $ (118,936 ) Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive income (loss) for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Prior service cost $ - $ - Accumulated income (loss) (96,965 ) (91,920 ) Accumulated other comprehensive income (loss) $ (96,965 ) $ (91,920 ) (Some amounts may not reconcile due to rounding.) Other changes in other comprehensive income (loss) for the periods indicated are as follows: Years Ended December 31, (Dollars in thousands) 2016 2015 Other comprehensive income (loss) at December 31, prior year $ (91,920 ) $ (102,692 ) Net gain (loss) arising during period (12,982 ) (259 ) Recognition of amortizations in net periodic benefit cost: Prior service cost - 21 Actuarial loss 7,937 11,011 Other comprehensive income (loss) at December 31, current year $ (96,965 ) $ (91,920 ) (Some amounts may not reconcile due to rounding.) Net periodic benefit cost for U.S. employees included the following components for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Service cost $ 10,924 $ 12,511 $ 10,015 Interest cost 9,485 10,759 10,474 Expected return on assets (11,158 ) (11,620 ) (11,288 ) Amortization of actuarial loss from earlier periods 7,937 9,243 4,341 Amortization of unrecognized prior service cost - 21 49 Settlement - 1,768 4,953 Net periodic benefit cost $ 17,188 $ 22,682 $ 18,543 Other changes recognized in other comprehensive income (loss): Other comprehensive income (loss) attributable to change from prior year 5,045 (10,773 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 22,233 $ 11,909 (Some amounts may not reconcile due to rounding.) The estimated transition obligation, actuarial loss and prior service cost that will be amortized from accumulated other comprehensive income into net periodic benefit cost over the next year are $ 0 8,758 0 The weighted average discount rates used to determine net periodic benefit cost for 2016, 2015 and 2014 were 4.38 4.00 5.00 4.00 7.50 The weighted average discount rates used to determine the actuarial present value of the projected benefit obligation for years end 2016, 2015 and 2014 were 4.16 4.38 4.00 The following table summarizes the accumulated benefit obligation for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Qualified Plan $ 211,720 $ 188,702 Non-qualified Plan 21,123 17,756 Total $ 232,843 $ 206,458 (Some amounts may not reconcile due to rounding.) The following table displays the plans with projected benefit obligations in excess of plan assets for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Qualified Plan Projected benefit obligation $ 254,320 $ 229,719 Fair value of plan assets 171,506 135,087 Non-qualified Plan Projected benefit obligation $ 27,534 $ 24,303 Fair value of plan assets - - The following table displays the plans with accumulated benefit obligations in excess of plan assets for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Qualified Plan Accumulated benefit obligation $ 211,720 $ 188,702 Fair value of plan assets 171,506 135,087 Non-qualified Plan Accumulated benefit obligation $ 21,123 $ 17,756 Fair value of plan assets - - The following table displays the expected benefit payments in the periods indicated: (Dollars in thousands) 2017 $ 7,926 2018 10,069 2019 12,993 2020 10,732 2021 12,936 Next 5 years 72,113 Plan assets consist of shares in investment trusts with 78 13 7 2 70 30 The following tables present the fair value measurement levels for the qualified plan assets at fair value for the periods indicated: Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2016 (Level 1) (Level 2) (Level 3) Assets: Cash $ - $ - $ - $ - Short-term investments, which approximates fair value (a) 3,665 3,665 - - Mutual funds, fair value Fixed income (b) 21,445 21,445 - - Equities (c) 122,213 122,213 - - Multi-strategy equity fund, fair value (d) 11,274 - - 11,274 Total $ 158,597 $ 147,323 $ - $ 11,274 (Some amounts may not reconcile due to rounding.) (a) This category includes high quality, short-term money market instruments, which are issued and payable in U.S. dollars. (b) This category includes fixed income funds, which invest in investment grade securities of corporations, governments and government agencies with approximately 50 50 (c) This category includes funds, which invest in small, mid and multi-cap equity securities including common stocks, securities convertible into common stock and securities with common stock characteristics, such as rights and warrants, with approximately 90 10 (d) This category consists of a privately held fund of U.S. and international equity funds and may include currency hedges for the foreign funds. The fair value is provided by the external investment manager. Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2015 (Level 1) (Level 2) (Level 3) Assets: Cash $ - $ - $ - $ - Short-term investments, which approximates fair value (a) 4,034 4,034 - - Mutual funds, fair value Fixed income (b) 22,537 22,537 - - Equities (c) 86,505 86,505 - - Multi-strategy equity fund, fair value (d) 10,673 - - 10,673 Total $ 123,749 $ 113,076 $ - $ 10,673 (Some amounts may not reconcile due to rounding.) (a) This category includes high quality, short-term money market instruments, which are issued and payable in U.S. dollars. (b) This category includes fixed income funds, which invest in investment grade securities of corporations, governments and government agencies with approximately 50% in U.S. securities and 50% in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities including common stocks, securities convertible into common stock and securities with common stock characteristics, such as rights and warrants, with approximately 90% in U.S. equities and 10% in international equities. (d) This category consists of a privately held fund of U.S. and international equity funds and may include currency hedges for the foreign funds. The fair value is provided by the external investment manager. In addition, $ 12,909 11,338 The following table presents the activity under Level 3, fair value measurements using significant unobservable inputs for fixed maturity investments, for the period indicated: Year Ended December 31, (Dollars in thousands) 2016 2015 Assets: Balance, beginning of period $ 10,673 $ 10,629 Actual return on plan assets: Realized gains (losses) relating to assets sold during the period 28 9 Unrealized gains (losses) relating to assets still held at the reporting date 517 12 Purchases and capital contributions - 161 Investment income earned on assets 189 - Sales and capital distributions (134 ) (138 ) Transfers in and/or (out) of Level 3 - - Balance, end of period $ 11,274 $ 10,673 The amount of total gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets still held at the reporting date $ 489 $ 3 (Some amounts may not reconcile due to rounding.) The Company does not expect to make any contributions to the qualified plan in 2017. The Company contributed $ 30,000 Defined Contribution Plans. The Company also maintains both qualified and non-qualified defined contribution plans ("Savings Plan" and "Non-Qualified Savings Plan", respectively) covering U.S. employees. Under the plans, the Company contributes up to a maximum 3 3 8 100 The following table presents the Company's incurred expenses related to these plans for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Incurred expenses $ 6,058 $ 5,468 $ 4,676 In addition, the Company maintains several defined contribution pension plans covering non-U.S. employees. Each non-U.S. office (Brazil, Canada, London, Belgium, Singapore, Ireland, Zurich and Bermuda) maintains a separate plan for the non-U.S. employees working in that location. The Company contributes various amounts based on salary, age and/or years of service. The contributions as a percentage of salary for the branch offices range from 5.0 19.7 Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Incurred expenses $ 1,560 $ 1,423 $ 1,387 Post-Retirement Plan. The Company sponsors a Retiree Health Plan for employees employed prior to April 1, 2010. This plan provides healthcare benefits for eligible retired employees (and their eligible dependants), who have elected coverage. The Company anticipates that most covered employees will become eligible for these benefits if they retire while working for the Company. The cost of these benefits is shared with the retiree. The Company accrues the post-retirement benefit expense during the period of the employee's service. The following medical cost trend rates were used to determine net periodic cost: a healthcare inflation rate for pre-Medicare claims of 6.7 4.5 6.2 4.5 The following medical cost trend rates were used to determine benefit obligations: a healthcare inflation rate for pre-Medicare claims of 7.5 4.5 7.5 4.5 Changes in the assumed healthcare cost trend can have a significant effect on the amounts reported for the healthcare plans. A one percent change in the rate would have the following effects on: Percentage Percentage Point Increase Point Decrease (Dollars in thousands) ($ Impact) ($ Impact) a. Effect on total service and interest cost components $ 541 $ (419 ) b. Effect on accumulated post-retirement benefit obligation 6,622 (5,158 ) The following table presents the post-retirement benefit expenses for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Post-retirement benefit expenses $ 2,293 $ 3,280 $ 3,196 The following table summarizes the status of this plan for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Change in projected benefit obligation: Benefit obligation at beginning of year $ 31,687 $ 36,506 Service cost 1,418 1,794 Interest cost 1,007 1,187 Amendments (794 ) - Actuarial (gain)/loss (668 ) (7,231 ) Benefits paid (579 ) (568 ) Benefit obligation at end of year 32,071 31,687 Change in plan assets: Fair value of plan assets at beginning of year - - Employer contributions 579 568 Benefits paid (579 ) (568 ) Fair value of plan assets at end of year - - Funded status at end of year $ (32,071 ) $ (31,687 ) Amounts recognized in the consolidated balance sheets for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Other liabilities (due within one year) $ (614 ) $ (654 ) Other liabilities (due beyond one year) (31,457 ) (31,033 ) Net amount recognized in the consolidated balance sheets $ (32,071 ) $ (31,687 ) (Some amounts may not reconcile due to rounding.) Amounts not yet reflected in net periodic benefit cost and included in accumulated other comprehensive income (loss) for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 Accumulated income (loss) $ (4,471 ) $ (5,139 ) Accumulated prior service credit (cost) 662 $ - Accumulated other comprehensive income (loss) $ (3,809 ) $ (5,139 ) Other changes in other comprehensive income (loss) for the periods indicated are as follows: Years Ended December 31, (Dollars in thousands) 2016 2015 Other comprehensive income (loss) at December 31, prior year $ (5,139 ) $ (12,670 ) Net gain (loss) arising during period 668 7,231 Prior Service credit (cost) arising during period 794 - Recognition of amortizations in net periodic benefit cost: Actuarial loss (gain) - 300 Prior service cost (132 ) - Other comprehensive income (loss) at December 31, current year $ (3,809 ) $ (5,139 ) Net periodic benefit cost included the following components for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Service cost $ 1,418 $ 1,794 $ 1,619 Interest cost 1,007 1,187 1,320 Net loss recognition (132 ) 300 257 Net periodic cost $ 2,293 $ 3,280 $ 3,196 Other changes recognized in other comprehensive income (loss): Other comprehensive gain (loss) attributable to change from prior year (1,330 ) (7,531 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 963 $ (4,251 ) (Some amounts may not reconcile due to rounding.) The estimated transition obligation, actuarial loss and prior service cost that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost over the next fiscal year are $ 0 132 131 The weighted average discount rates used to determine net periodic benefit cost for 2016, 2015 and 2014 were 4.38 4.00 5.00 The weighted average discount rates used to determine the actuarial present value of the projected benefit obligation at year end 2016, 2015 and 2014 were 4.16 4.38 4.00 The following table displays the expected benefit payments in the years indicated: (Dollars in thousands) 2017 $ 614 2018 706 2019 824 2020 951 2021 1,071 Next 5 years 7,804

Dividend Restrictions And Statu

Dividend Restrictions And Statutory Financial Information	12 Months Ended
	Dec. 31, 2016
Dividend Restrictions And Statutory Financial Information [Abstract]
Dividend Restrictions And Statutory Financial Information	14. DIVIDEND RESTRICTIONS AND STATUTORY FINANCIAL INFORMATION Group and its operating subsidiaries are subject to various regulatory restrictions, including the amount of dividends that may be paid and the level of capital that the operating entities must maintain. These regulatory restrictions are based upon statutory capital as opposed to GAAP basis equity or net assets. Group and one of its primary operating subsidiaries, Bermuda Re, are regulated by Bermuda law and its other primary operating subsidiary, Everest Re, is regulated by Delaware law. Bermuda Re is subject to the Bermuda Solvency Capital Requirement ("BSCR") administered by the Bermuda Monetary Authority ("BMA") and Everest Re is subject to the Risk-Based Capital Model ("RBC") developed by the National Association of Insurance Commissioners ("NAIC"). These models represent the aggregate regulatory restrictions on net assets and statutory capital and surplus. Dividend Restrictions. Under Bermuda law, Group is prohibited from declaring or paying a dividend if such payment would reduce the realizable value of its assets to an amount less than the aggregate value of its liabilities and its issued share capital and share premium (additional paid-in capital) accounts. Group's ability to pay dividends and its operating expenses is dependent upon dividends from its subsidiaries. Under Bermuda law, Bermuda Re is prohibited from declaring or making payment of a dividend if it fails to meet its minimum solvency margin or minimum liquidity ratio. As a long term insurer, Bermuda Re is also unable to declare or pay a dividend to anyone who is not a policyholder unless, after payment of the dividend, the value of the assets in their long term business fund, as certified by their approved actuary, exceeds their liabilities for long term business by at least the $ 250 Prior approval of the BMA is required if Bermuda Re's dividend payments would exceed 25 Bermuda Re prepares its statutory financial statements in conformity with the accounting principles set forth in Bermuda in The Insurance Act 1978, amendments thereto and related regulations. The general business statutory capital and surplus of Bermuda Re was $ 2,702,624 2,632,411 682,876 621,643 698,834 Delaware law provides that an insurance company which is a member of an insurance holding company system and is domiciled in the state shall not pay dividends without giving prior notice to the Insurance Commissioner of Delaware and may not pay dividends without the approval of the Insurance Commissioner if the value of the proposed dividend, together with all other dividends and distributions made in the preceding twelve months, exceeds the greater of (1) 10 523,547 Everest Re prepares its statutory financial statements in accordance with accounting practices prescribed or permitted by the NAIC and the Delaware Insurance Department. Prescribed statutory accounting practices are set forth in the NAIC Accounting Practices and Procedures Manual. The capital and statutory surplus of Everest Re was $ 3,635,121 3,210,891 523,547 498,455 357,298 There are certain regulatory and contractual restrictions on the ability of Holdings' operating subsidiaries to transfer funds to Holdings in the form of cash dividends, loans or advances. The insurance laws of the State of Delaware, where Holdings' direct insurance subsidiaries are domiciled, require regulatory approval before those subsidiaries can pay dividends or make loans or advances to Holdings that exceed certain statutory thresholds. Capital Restrictions. In Bermuda, Bermuda Re is subject to the BSCR administered by the BMA. No regulatory action is taken if an insurer's capital and surplus is equal to or in excess of their enhanced capital requirement determined by the BSCR model. In addition, the BMA has established a target capital level for each insurer, which is 120 In the United States, Everest Re is subject to the RBC developed by the NAIC which determines an authorized control level risk-based capital. As long as the total adjusted capital is 200 The regulatory targeted capital and the actual statutory capital for Bermuda Re and Everest Re were as follows: Bermuda Re (1) Everest Re (2) At December 31, At December 31, (Dollars in thousands) 2016 (3) 2015 (3) 2016 2015 Regulatory targeted capital $ - $ 2,079,005 $ 1,411,440 $ 1,355,668 Actual capital $ 2,702,624 $ 2,632,411 $ 3,635,121 $ 3,210,891 (1) Regulatory targeted capital represents the target capital level from the applicable year's BSCR calculation. (2) Regulatory targeted capital represents 200% of the RBC authorized control level calculation for the applicable year. (3) The 2016 BSCR calculation is not yet due to be completed; however, the Company anticipates that Bermuda Re's December 31, 2016 actual capital will exceed the targeted capital level.

Commitments And Contingencies

Commitments And Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies [Abstract]
Commitments And Contingencies	15. COMMITMENTS AND CONTINGENCIES In the ordinary course of business, the Company is involved in lawsuits, arbitrations and other formal and informal dispute resolution procedures, the outcomes of which will determine the Company's rights and obligations under insurance and reinsurance agreements. In some disputes, the Company seeks to enforce its rights under an agreement or to collect funds owing to it. In other matters, the Company is resisting attempts by others to collect funds or enforce alleged rights. These disputes arise from time to time and are ultimately resolved through both informal and formal means, including negotiated resolution, arbitration and litigation. In all such matters, the Company believes that its positions are legally and commercially reasonable. The Company considers the statuses of these proceedings when determining its reserves for unpaid loss and loss adjustment expenses. Aside from litigation and arbitrations related to these insurance and reinsurance agreements, the Company is not a party to any other material litigation or arbitration. The Company has entered into separate annuity agreements with The Prudential Insurance of America ("The Prudential") and an additional unaffiliated life insurance company in which the Company has either purchased annuity contracts or become the assignee of annuity proceeds that are meant to settle claim payment obligations in the future. In both instances, the Company would become contingently liable if either The Prudential or the unaffiliated life insurance company were unable to make payments related to the respective annuity contract. The table below presents the estimated cost to replace all such annuities for which the Company was contingently liable for the periods indicated: At December 31, (Dollars in thousands) 2016 2015 The Prudential Insurance Company of America $ 146,507 $ 142,427 Unaffiliated life insurance company $ 33,860 $ 33,062

Share-Based Compensation Plans

Share-Based Compensation Plans	12 Months Ended
	Dec. 31, 2016
Share-Based Compensation Plans [Abstract]
Share-Based Compensation Plans	16. SHARE-BASED COMPENSATION PLANS The Company has a 2010 Stock Incentive Plan ("2010 Employee Plan"), a 2009 Non-Employee Director Stock Option and Restricted Stock Plan ("2009 Director Plan") and a 2003 Non-Employee Director Equity Compensation Plan ("2003 Director Plan"). Under the 2010 Employee Plan, 4,000,000 2,629,771 no 37,439 34,957 500,000 362,714 Options and restricted shares granted under the 2010 Employee Plan and the 2002 Employee Plan vest at the earliest of 20 33 ten Performance Share Unit awards granted under the 2010 Employee Plan will vest 100 three 0 1.75 50 three 50 For share options, restricted shares and performance share units granted under the 2010 Employee Plan, the 2002 Employee Plan, the 2009 Director Plan and the 2003 Director Plan, share-based compensation expense recognized in the consolidated statements of operations and comprehensive income (loss) was $ 26,398 21,237 21,196 6,898 4,870 5,819 For the year ended December 31, 2016, a total of 173,546 186.015 182.095 194.165 212.120 11,130 186.015 No The Company recognizes, as an increase to additional paid-in capital, a realized income tax benefit from dividends, charged to retained earnings and paid to employees on equity classified non-vested equity shares. In addition, the amount recognized in additional paid-in capital for the realized income tax benefit from dividends on those awards is included in the pool of excess tax benefits available to absorb tax deficiencies on share-based payment awards. For the years ended December 31, 2016, 2015 and 2014, the Company recognized $ 597 446 401 A summary of the option activity under the Company's shareholder approved plans as of December 31, 2016, 2015 and 2014, and changes during the year then ended is presented in the following tables: Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in thousands) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2016 648,034 $ 85.61 Granted - - Exercised 187,940 87.31 Forfeited/Cancelled/Expired 5,100 88.25 Outstanding at December 31, 2016 454,994 84.88 3.7 $ 59,843 Exercisable at December 31, 2016 410,694 84.50 3.5 $ 54,169 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in thousands) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2015 888,184 $ 86.05 Granted - - Exercised 230,350 87.21 Forfeited/Cancelled/Expired 9,800 87.68 Outstanding at December 31, 2015 648,034 85.61 4.5 $ 64,352 Exercisable at December 31, 2015 495,334 84.94 4.1 $ 49,517 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in thousands) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2014 1,190,544 $ 85.44 Granted - - Exercised 286,120 83.53 Forfeited/Cancelled/Expired 16,240 85.73 Outstanding at December 31, 2014 888,184 86.05 5.2 $ 76,485 Exercisable at December 31, 2014 562,684 85.41 4.5 $ 48,812 There were no 19,876 21,434 21,202 16,408 6,480 The following table summarizes information about share options outstanding for the period indicated: At December 31, 2016 Options Outstanding Options Exercisable Weighted- Average Weighted- Weighted- Number Remaining Average Number Average Range of Outstanding Contractual Exercise Exercisable Exercise Exercise Prices at 12/31/16 Life Price at 12/31/16 Price $ 71.7150 78.1700 90,880 2.1 $ 71.72 90,880 $ 71.72 $ 78.1800 85.6300 71,510 3.1 84.63 71,510 84.63 $ 85.6400 87.4700 109,240 4.1 86.62 109,240 86.62 $ 87.4800 110.1300 183,364 4.4 90.46 139,064 91.14 454,994 3.7 84.88 410,694 84.50 The following table summarizes the status of the Company's non-vested shares and changes for the periods indicated: Years Ended December 31, 2016 2015 2014 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Restricted (non-vested) Shares Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 435,336 $ 143.02 467,745 $ 120.84 429,041 $ 103.50 Granted 173,546 186.37 156,262 178.80 176,159 147.44 Vested 145,834 130.54 154,387 113.12 128,549 99.55 Forfeited 27,710 147.32 34,284 138.19 8,906 118.82 Outstanding at December 31, 435,338 164.21 435,336 143.02 467,745 120.84 As of December 31, 2016, there was $ 51,511 3.1 27,427 17,464 12,797 8,061 In addition to the 2010 Employee Plan, the 2009 Director Plan and the 2003 Director Plan, Group issued 547 426 476 103 75 75 Since its 1995 initial public offering, the Company has issued to certain key employees of the Company 1,997,372 258,587 129,817 no 70,010 82,277 82,490 12,111 14,666 12,738 The following table summarized the status of the Company's non-vested performance share unit awards and changes for the period indicated: Year Ended December 31, 2016 2015 Weighted- Weighted- Average Average Grant Date Grant Date Performance Share Unit Awards Shares Fair Value Shares Fair Value Outstanding at January 1, 10,705 $ 178.84 - $ - Granted 11,130 186.02 10,705 178.84 Vested - - - - Forfeited - - - - Outstanding at December 31, 21,835 182.50 10,705 178.84

Segment Reporting

Segment Reporting	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Reporting	17. SEGMENT REPORTING The U.S. Reinsurance operation writes property and casualty reinsurance and specialty lines of business, including Marine, Aviation, Surety and Accident and Health ("A&H") business, on both a treaty and facultative basis, through reinsurance brokers, as well as directly with ceding companies primarily within the U.S. The International operation writes non-U.S. property and casualty reinsurance through Everest Re's branches in Canada and Singapore and through offices in Brazil, Miami and New Jersey. The Bermuda operation provides reinsurance and insurance to worldwide property and casualty markets through brokers and directly with ceding companies from its Bermuda office and reinsurance to the United Kingdom and European markets through its UK branch and Ireland Re. The Insurance operation writes property and casualty insurance directly and through brokers, surplus lines brokers and general agents within the U.S. and Canada. These segments are managed independently, but conform with corporate guidelines with respect to pricing, risk management, control of aggregate catastrophe exposures, capital, investments and support operations. Management generally monitors and evaluates the financial performance of these operating segments based upon their underwriting results. Underwriting results include earned premium less losses and loss adjustment expenses ("LAE") incurred, commission and brokerage expenses and other underwriting expenses. We measure our underwriting results using ratios, in particular loss, commission and brokerage and other underwriting expense ratios, which, respectively, divide incurred losses, commissions and brokerage and other underwriting expenses by premiums earned. For inter-affiliate reinsurance and business written through the Lloyd's Syndicate, business is generally reported within the segment in which the business was first produced, consistent with how the business is managed. The Company does not maintain separate balance sheet data for its operating segments. Accordingly, the Company does not review and evaluate the financial results of its operating segments based upon balance sheet data. The following tables present the underwriting results for the operating segments for the periods indicated: U.S. Reinsurance Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 2,125,792 $ 2,147,892 $ 2,154,530 Net written premiums 1,970,575 1,855,853 1,983,800 Premiums earned $ 2,072,155 $ 1,952,680 $ 1,986,769 Incurred losses and LAE 1,068,475 825,081 954,525 Commission and brokerage 465,953 493,261 466,291 Other underwriting expenses 54,107 50,087 45,583 Underwriting gain (loss) $ 483,620 $ 584,251 $ 520,370 International Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 1,230,683 $ 1,334,206 $ 1,603,566 Net written premiums 1,082,712 1,208,978 1,336,633 Premiums earned $ 1,119,121 $ 1,251,111 $ 1,310,903 Incurred losses and LAE 486,550 749,891 748,174 Commission and brokerage 283,447 298,180 306,229 Other underwriting expenses 35,512 34,303 34,598 Underwriting gain (loss) $ 313,612 $ 168,737 $ 221,902 Bermuda Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 890,375 $ 877,328 $ 786,408 Net written premiums 831,931 791,594 744,664 Premiums earned $ 837,964 $ 822,391 $ 715,736 Incurred losses and LAE 461,909 456,448 361,792 Commission and brokerage 233,989 215,992 198,848 Other underwriting expenses 36,331 36,017 34,923 Underwriting gain (loss) $ 105,735 $ 113,934 $ 120,173 Insurance Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 1,787,024 $ 1,532,287 $ 1,218,372 Net written premiums 1,385,687 1,325,886 1,067,333 Premiums earned $ 1,291,226 $ 1,266,660 $ 1,030,299 Incurred losses and LAE 1,122,695 1,033,295 811,445 Commission and brokerage 205,303 176,213 149,777 Other underwriting expenses 176,772 136,661 118,001 Underwriting gain (loss) $ (213,544 ) $ (79,509 ) $ (48,924 ) The following table reconciles the underwriting results for the operating segments to income before taxes as reported in the consolidated statements of operations and comprehensive income (loss) for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Underwriting gain (loss) $ 689,423 $ 787,412 $ 813,522 Net investment income 473,085 473,473 530,485 Net realized capital gains (losses) (7,216 ) (184,147 ) 84,046 Net derivative gain (loss) 18,647 6,317 (11,599 ) Corporate expenses (27,231 ) (23,254 ) (23,421 ) Interest, fee and bond issue cost amortization expense (36,228 ) (36,191 ) (38,533 ) Other income (expense) (10,636 ) 88,280 32,308 Income (loss) before taxes $ 1,099,844 $ 1,111,890 $ 1,386,808 The Company produces business in the U.S., Bermuda and internationally. The net income deriving from and assets residing in the individual foreign countries in which the Company writes business are not identifiable in the Company's financial records. Based on gross written premium, the table below presents the largest country, other than the U.S., in which the Company writes business, for the periods indicated: Years Ended December 31, (Dollars in thousands) 2016 2015 2014 United Kingdom $ 688,598 $ 740,763 $ 676,490 Approximately 19.4 20.7 22.7

Dispositions

Dispositions	12 Months Ended
	Dec. 31, 2016
Dispositions [Abstract]
Dispositions	18. DISPOSITIONS On August 24, 2016, the Company sold Heartland, its crop Managing General Agent to CGB for $ 49,000 12,942 On July 13, 2015, the Company closed its agreement to sell all of the outstanding shares of capital stock of Mt. McKinley, a Delaware domiciled insurance company and wholly-owned subsidiary of the Company to Clearwater Insurance Company, a Delaware domiciled insurance company. The Company received $ 20,156 Concurrently with the closing, the Company entered into a retrocession treaty with an affiliate of Clearwater Insurance Company. Per the retrocession treaty, the Company retroceded 100 140,279 100,451 440,279 300,000

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	19. SUBSEQUENT EVENTS The Company has evaluated known recognized and non-recognized subsequent events. The Company does not have any subsequent events to report.

Unaudited Quarterly Financial D

Unaudited Quarterly Financial Data	12 Months Ended
	Dec. 31, 2016
Unaudited Quarterly Financial Data [Abstract]
Unaudited Quarterly Financial Data	20. UNAUDITED QUARTERLY FINANCIAL DATA Summarized quarterly financial data for the periods indicated: 2016 (Dollars in thousands, except per share amounts) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Operating data: Gross written premiums $ 1,353,189 $ 1,363,351 $ 1,782,616 $ 1,534,719 Net written premiums 1,181,457 1,154,953 1,564,644 1,369,851 Premiums earned 1,218,867 1,288,860 1,371,474 1,441,265 Net investment income 102,524 132,737 122,657 115,167 Net realized capital gains (losses) (74,259 ) 32,658 380 34,005 Total claims and underwriting expenses 1,047,865 1,225,395 1,174,276 1,183,507 Net income (loss) 171,686 155,692 295,394 373,572 Earnings per common share attributable to Everest Re Group: Basic $ 4.03 $ 3.70 $ 7.11 $ 9.14 Diluted $ 4.00 $ 3.67 $ 7.06 $ 9.08 2015 (Dollars in thousands, except per share amounts) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Operating data: Gross written premiums $ 1,418,025 $ 1,261,660 $ 1,724,943 $ 1,487,085 Net written premiums 1,224,289 1,135,718 1,500,355 1,321,949 Premiums earned 1,272,488 1,285,255 1,362,864 1,372,235 Net investment income 122,566 124,990 115,403 110,514 Net realized capital gains (losses) (10,505 ) (24,178 ) (159,971 ) 10,507 Total claims and underwriting expenses 1,056,990 1,130,606 1,234,785 1,083,049 Net income (loss) 322,978 209,057 88,553 357,281 Earnings per common share attributable to Everest Re Group: Basic $ 7.26 $ 4.72 $ 2.02 $ 8.32 Diluted $ 7.19 $ 4.68 $ 2.00 $ 8.26

Schedule I - Summary Of Investm

Schedule I - Summary Of Investments - Other Than Investments In Related Parties	12 Months Ended
	Dec. 31, 2016
Schedule I - Summary Of Investments - Other Than Investments In Related Parties [Abstract]
Schedule I - Summary Of Investments - Other Than Investments In Related Parties	SCHEDULE I — SUMMARY OF INVESTMENTS — OTHER THAN INVESTMENTS IN RELATED PARTIES December 31, 2016 Column A Column B Column C Column D Amount Shown in Market Balance (Dollars in thousands) Cost Value Sheet Fixed maturities-available for sale Bonds: U.S. government and government agencies $ 1,115,208 $ 1,130,315 $ 1,130,315 State, municipalities and political subdivisions 723,938 729,984 729,984 Foreign government securities 1,254,175 1,258,160 1,258,160 Foreign corporate securities 2,565,710 2,631,978 2,631,978 Public utilities 272,946 277,978 277,978 All other corporate bonds 5,255,468 5,345,900 5,345,900 Mortgage - backed securities: Commercial 308,827 306,932 306,932 Agency residential 2,415,901 2,405,469 2,405,469 Non-agency residential 642 641 641 Redeemable preferred stock 19,798 20,051 20,051 Total fixed maturities-available for sale 13,932,613 14,107,408 14,107,408 Fixed maturities - available for sale at fair value (1) - - - Equity securities - available for sale at market value 129,553 119,067 119,067 Equity securities - available for sale at fair value (1) 778,526 1,010,085 1,010,085 Short-term investments 431,478 431,478 431,478 Other invested assets 1,333,069 1,333,129 1,333,129 Cash 481,922 481,922 481,922 Total investments and cash $ 17,087,161 $ 17,483,089 $ 17,483,089 ( 1 ) Original cost does not reflect fair v alue adjustments, which have been realized through the statements of operations and comprehensive income (loss).

Schedule II - Condensed Financi

Schedule II - Condensed Financial Information Of The Registrant	12 Months Ended
	Dec. 31, 2016
Schedule II - Condensed Financial Information Of The Registrant [Abstract]
Schedule II - Condensed Financial Information Of The Registrant	SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT CONDENSED BALANCE SHEETS December 31, (Dollars and share amounts in thousands, except par value per share) 2016 2015 ASSETS: Fixed maturities - available for sale, at market value $ 2,178 $ 78,282 (amortized cost: 2016, $2,176; 2015, $78,153) Short-term investments - 18,288 Other invested assets (cost: 2016, $145,036; 2015, $0) 145,036 - Cash 2,034 740 Investment in subsidiaries, at equity in the underlying net assets 8,120,595 7,705,868 Accrued investment income 20 71 Receivable from subsidiaries 894 736 Other assets 60,603 56,314 TOTAL ASSETS $ 8,331,360 $ 7,860,299 LIABILITIES: Long term note payable - Affiliated $ 250,000 $ 250,000 Due to subsidiaries 1,020 1,068 Other liabilities 4,944 646 Total liabilities 255,964 251,714 SHAREHOLDERS' EQUITY: Preferred shares, par value: $0.01; 50,000 shares authorized; no shares issued and outstanding - - Common shares, par value: $0.01; 200,000 shares authorized; (2016) 68,871 and (2015) 68,606 issued outstanding before treasury shares 689 686 Additional paid-in capital 2,140,783 2,103,638 Accumulated other comprehensive income (loss), net of deferred income tax expense (benefit) of $8,240 at 2016 and ($15,863) at 2015 (216,764 ) (231,755 ) Treasury shares, at cost; 27,972 shares (2016) and 25,912 shares (2015) (3,272,244 ) (2,885,956 ) Retained earnings 9,422,932 8,621,972 Total shareholders' equity 8,075,396 7,608,585 TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY $ 8,331,360 $ 7,860,299 See notes to consolidated financial statements. SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT CONDENSED STATEMENTS OF OPERATIONS Years Ended December 31, 2016 2015 2014 (Dollars in thousands) REVENUES: Net investment income $ 879 $ 3,895 $ 824 Net realized capital gains (losses) 144 (3,057 ) 15 Other income (expense) 5,022 7,809 5,568 Net income (loss) of subsidiaries 1,012,315 989,462 1,208,192 Total revenues 1,018,360 998,109 1,214,599 EXPENSES: Interest expense - affiliated 4,300 4,300 - Other expenses 17,716 15,940 15,443 Total expenses 22,016 20,240 15,443 INCOME (LOSS) BEFORE TAXES 996,344 977,869 1,199,156 Income tax expense (benefit) - - - NET INCOME (LOSS) $ 996,344 $ 977,869 $ 1,199,156 Other comprehensive income (loss), net of tax: Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period 57,629 (274,127 ) 704 Reclassification adjustment for realized losses (gains) included in net income (loss) 15,118 93,688 21,392 Total URA(D) on securities arising during the period 72,747 (180,439 ) 22,096 Foreign currency translation adjustments (55,341 ) (111,530 ) (95,417 ) Benefit plan actuarial net gain (loss) for the period (7,488 ) 5,681 (39,110 ) Reclassification adjustment for amortization of net (gain) loss included in net income (loss) 5,073 6,216 3,020 Total benefit plan net gain (loss) for the period (2,415 ) 11,897 (36,090 ) Total other comprehensive income (loss), net of tax 14,991 (280,072 ) (109,411 ) COMPREHENSIVE INCOME (LOSS) $ 1,011,335 $ 697,797 $ 1,089,745 See notes to consolidated financial statements. SCHEDULE II — CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (Dollars in thousands) 2016 2015 2014 CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 996,344 $ 977,869 $ 1,199,156 Adjustments to reconcile net income to net cash provided by operating activities: Equity in retained (earnings) deficit of subsidiaries (1,012,315 ) (989,462 ) (1,208,192 ) Dividends received from subsidiaries 690,000 590,000 690,000 Change in other assets and liabilities, net 66 (7,626 ) 14,470 Increase (decrease) in due to/from affiliates (206 ) 839 (2,520 ) Amortization of bond premium (accrual of bond discount) (56 ) 525 156 Realized capital losses (gains) (144 ) 3,057 (15 ) Non-cash compensation expense 2,311 1,841 1,828 Net cash provided by (used in) operating activities 676,000 577,043 694,883 CASH FLOWS FROM INVESTING ACTIVITIES: Additional investment in subsidiaries (77,324 ) (60,600 ) (73,873 ) Proceeds from fixed maturities matured/called - available for sale, at market value 1,152 26,074 4,765 Proceeds from fixed maturities sold - available for sale, at market value 75,025 252,047 50,010 Distribution from other invested assets 757,399 - - Cost of fixed maturities acquired - available for sale, at market value - (532,480 ) (49,994 ) Cost of other invested assets acquired (902,435 ) - - Net change in short-term investments 18,288 279,462 (269,307 ) Net cash provided by (used in) investing activities (127,895 ) (35,497 ) (338,399 ) CASH FLOWS FROM FINANCING ACTIVITIES: Common shares issued during the period, net 34,861 32,962 37,208 Purchase of treasury shares (386,288 ) (400,059 ) (500,024 ) Proceeds from issuance of long term notes - affiliated - - 250,000 Dividends paid to shareholders (195,384 ) (175,107 ) (145,913 ) Net cash provided by (used in) financing activities (546,811 ) (542,204 ) (358,729 ) EFFECT OF EXCHANGE RATE CHANGES ON CASH - - - Net increase (decrease) in cash 1,294 (658 ) (2,245 ) Cash, beginning of period 740 1,398 3,643 Cash, end of period $ 2,034 $ 740 $ 1,398 See notes to consolidated financial statements. SCHEDULE II – CONDENSED FINANCIAL INFORMATION OF THE REGISTRANT NOTES TO CONDENSED FINANCIAL INFORMATION 1.) The accompanying condensed financial information should be read in conjunction with the Consolidated Financial Statements and related Notes of Everest Re Group, Ltd. and its Subsidiaries. 2.) Everest Re Group, Ltd. entered into a $ 250,000 December 31, 2023 1.72 3.) Everest Re Group, Ltd. has invested funds in the segregated accounts of Mt. Logan Re, Ltd. ("Mt. Logan Re"), an affiliated entity. As of December 31, 2016 and 2015, Everest Re Group, Ltd. had investments in preferred shares of Mt. Logan Re, Ltd. segregated accounts of $ 55,536 50,000 Based upon ASU 2015-02, authoritative guidance regarding consolidation of reporting entities, the separate segregated accounts of Mt. Logan Re are no longer included as part of the consolidated financial statements of Everest Re Group, Ltd. and its subsidiaries. Therefore, for the condensed financial statements, the presentation of Everest Re Group, Ltd. investments and operating results related to Mt. Logan Re have been reclassified for the presented periods in accordance with the guidance. On the Condensed Balance Sheets, investments in Mt. Logan Re valued at $ 58,955 55,673 5,536 8,268 6,142

Schedule III - Supplementary In

Schedule III - Supplementary Insurance Information	12 Months Ended
	Dec. 31, 2016
Schedule III - Supplementary Insurance Information [Abstract]
Schedule III - Supplementary Insurance Information	SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION Column A Column B Column C Column D Column E Column F Column G Column H Column I Column J Reserve Incurred Geographic Area for Losses Loss and Amortization Deferred and Loss Unearned Net Loss of Deferred Other Net Acquisition Adjustment Premium Premiums Investment Adjustment Acquisition Operating Written (Dollars in thousands) Costs Expenses Reserves Earned Income Expenses Costs Expenses Premium December 31, 2016 Domestic $ 220,864 $ 6,604,867 $ 1,110,528 $ 3,363,381 $ 234,123 $ 2,191,170 $ 671,256 $ 230,879 $ 3,356,262 International 52,014 1,748,380 237,120 1,119,121 33,059 486,550 283,447 35,512 1,082,712 Bermuda 71,174 1,959,065 229,898 837,964 205,902 461,909 233,989 36,331 831,931 Total $ 344,052 $ 10,312,313 $ 1,577,546 $ 5,320,466 $ 473,085 $ 3,139,629 $ 1,188,692 $ 302,722 $ 5,270,905 December 31, 2015 Domestic $ 234,061 $ 6,114,129 $ 1,083,493 $ 3,219,340 $ 245,159 $ 1,858,376 $ 669,474 $ 186,748 $ 3,181,739 International 61,217 1,819,700 273,677 1,251,111 34,181 749,891 298,180 34,303 1,208,978 Bermuda 77,074 2,017,970 256,220 822,391 194,133 456,448 215,992 36,017 791,594 Total $ 372,351 $ 9,951,798 $ 1,613,390 $ 5,292,842 $ 473,473 $ 3,064,715 $ 1,183,646 $ 257,069 $ 5,182,311 December 31, 2014 Domestic $ 242,178 $ 6,041,129 $ 1,099,842 $ 3,017,068 $ 253,304 $ 1,765,970 $ 616,068 $ 163,584 $ 3,051,133 International 69,050 1,785,695 347,352 1,310,903 40,262 748,174 306,229 34,598 1,336,633 Bermuda 87,103 1,893,989 281,551 715,736 236,920 361,792 198,848 34,923 744,664 Total $ 398,331 $ 9,720,813 $ 1,728,745 $ 5,043,707 $ 530,485 $ 2,875,936 $ 1,121,145 $ 233,104 $ 5,132,430 (Some amounts may not reconcile due to rounding.)

Schedule IV - Reinsurance

Schedule IV - Reinsurance	12 Months Ended
	Dec. 31, 2016
Schedule IV - Reinsurance [Abstract]
Schedule IV - Reinsurance	SCHEDULE IV - REINSURANCE Column A Column B Column C Column D Column E Column F Ceded to Assumed Gross Other from Other Net Assumed (Dollars in thousands) Amount Companies Companies Amount to Net December 31, 2016 Total property and liability insurance premiums earned $ 1,694,702 $ 736,180 $ 4,361,944 $ 5,320,466 82.0 % December 31, 2015 Total property and liability insurance premiums earned $ 1,491,163 $ 698,847 $ 4,500,526 $ 5,292,842 85.0 % December 31, 2014 Total property and liability insurance premiums earned $ 1,183,498 $ 559,113 $ 4,419,322 $ 5,043,707 87.6 %

Summary Of Significant Accoun32

Summary Of Significant Accounting Policies (Policy)	12 Months Ended
	Dec. 31, 2016
Summary Of Significant Accounting Policies [Abstract]
Business And Basis Of Presentation	A. Business and Basis of Presentation. Everest Re Group, Ltd. ("Group"), a Bermuda company, through its subsidiaries, principally provides reinsurance and insurance in the U.S., Bermuda and international markets. As used in this document, "Company" means Group and its subsidiaries. During the third quarter of 2016, the Company established domestic subsidiaries, Everest Premier Insurance Company ("Everest Premier") and Everest Denali Insurance Company ("Everest Denali"), which will be used in the continued expansion of the Insurance operations. Effective July 1, 2016, the Company established a new Irish holding company, Everest Dublin Insurance Holdings Limited (Ireland) ("Everest Dublin Holdings"). Effective August 24, 2016, the Company sold its wholly-owned subsidiary, Heartland Crop Insurance Company ("Heartland"), a managing agent for crop insurance, to CGB Diversified Services, Inc. ("CGB"). The operating results of Heartland through August 24, 2016, are included within the Company's financial statements. During the fourth quarter of 2015, the Company established new subsidiaries, Everest Preferred International Holdings, Ltd. ("Preferred International"), a Bermuda based company and Everest International Holdings (Bermuda), Ltd. ("International Holdings"), a Bermuda based company. These new subsidiaries were part of a capital restructuring within the Company to support a planned increase in international business production, which includes directly supporting Group's new Lloyd's of London Syndicate corporate member. Effective July 13, 2015, the Company sold all of the outstanding shares of capital stock of a wholly-owned subsidiary entity, Mt. McKinley Insurance Company ("Mt. McKinley"), to Clearwater Insurance Company. The operating results of Mt. McKinley through July 13, 2015 are included within the Company's financial statements. Effective February 27, 2013, the Company established a new subsidiary, Mt. Logan Reinsurance Limited ("Mt. Logan Re"). Mt. Logan Re manages separate segregated accounts whose assets and capital relate mainly to third party external investors. The segregated account activities related to third party external investors are not included as part of the Company's financial statements. The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("GAAP"). The statements include all of the following domestic and foreign direct and indirect subsidiaries of Group: Everest International Reinsurance, Ltd. ("Everest International"), Everest Global Services, Inc. ("Global Services"), Mt. Logan Insurance Managers, Ltd., Mt. Logan Management, Ltd., International Holdings, Everest Corporate Member Limited, Everest Service Company (UK), Ltd., Preferred International, Everest Reinsurance (Bermuda), Ltd. ("Bermuda Re"), Everest Re Advisors, Ltd., Everest Advisors (UK), Ltd., Everest Underwriting Group (Ireland), Limited ("Holdings Ireland"), Everest Insurance Company of Canada ("Everest Canada"), Premiere Insurance Underwriting Services ("Premiere"), Everest Dublin Holdings, Everest Dublin Insurance Limited, Everest Reinsurance Company (Ireland), designated activity company ("Ireland Re"), Everest Reinsurance Holdings, Inc. ("Holdings"), Heartland, Everest International Assurance, Ltd. (Bermuda) ("Everest Assurance"), Specialty Insurance Group, Inc. ("Specialty"), Specialty Insurance Group - Leisure and Entertainment Risk Purchasing Group LLC ("Specialty RPG"), Mt. McKinley, Mt. McKinley Managers, L.L.C., Workcare Southeast of Georgia, Inc., Everest Specialty Underwriters Services, LLC, Everest Reinsurance Company ("Everest Re"), Everest National Insurance Company ("Everest National"), Everest Reinsurance Company Ltda. (Brazil), Mt. Whitney Securities, Inc., Everest Indemnity Insurance Company ("Everest Indemnity"), Everest Denali, Everest Premier and Everest Security Insurance Company ("Everest Security"). All amounts are reported in U.S. dollars. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities (and disclosure of contingent assets and liabilities) at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Ultimate actual results could differ, possibly materially, from those estimates. All intercompany accounts and transactions have been eliminated. Certain reclassifications and format changes have been made to prior years' amounts to conform to the 2016 presentation.
Investments	B. Investments. Fixed maturity and equity security investments available for sale, at market value, reflect unrealized appreciation and depreciation, as a result of temporary changes in market value during the period, in shareholders' equity, net of income taxes in "accumulated other comprehensive income (loss)" in the consolidated balance sheets. Fixed maturity and equity securities carried at fair value reflect fair value re-measurements as net realized capital gains and losses in the consolidated statements of operations and comprehensive income (loss). The Company records changes in fair value for its fixed maturities available for sale, at market value through shareholders' equity, net of taxes in accumulated other comprehensive income (loss) since cash flows from these investments will be primarily used to settle its reserve for losses and loss adjustment expense liabilities. The Company anticipates holding these investments for an extended period as the cash flow from interest and maturities will fund the projected payout of these liabilities. Fixed maturities carried at fair value represent a portfolio of convertible bond securities, which have characteristics similar to equity securities and at times, designated foreign denominated fixed maturity securities, which will be used to settle loss and loss adjustment reserves in the same currency. The Company carries all of its equity securities at fair value except for mutual fund investments whose underlying investments are comprised of fixed maturity securities. For equity securities, available for sale, at fair value, the Company reflects changes in value as net realized capital gains and losses since these securities may be sold in the near term depending on financial market conditions. Interest income on all fixed maturities and dividend income on all equity securities are included as part of net investment income in the consolidated statements of operations and comprehensive income (loss). Unrealized losses on fixed maturities, which are deemed other-than-temporary and related to the credit quality of a security, are charged to net income (loss) as net realized capital losses. Short-term investments are stated at cost, which approximates market value. Realized gains or losses on sales of investments are determined on the basis of identified cost. For some non-publicly traded securities, market prices are determined through the use of pricing models that evaluate securities relative to the U.S. Treasury yield curve, taking into account the issue type, credit quality, and cash flow characteristics of each security. For other non-publicly traded securities, an investment manager's valuation committee will estimate fair value, which is reviewed by the Company for reasonableness. For publicly traded securities, market value is based on quoted market prices or valuation models that use observable market inputs. When a sector of the financial markets is inactive or illiquid, the Company may use its own assumptions about future cash flows and risk-adjusted discount rates to determine fair value. Retrospective adjustments are employed to recalculate the values of asset-backed securities. Each acquisition lot is reviewed to recalculate the effective yield. The recalculated effective yield is used to derive a book value as if the new yield were applied at the time of acquisition. Outstanding principal factors from the time of acquisition to the adjustment date are used to calculate the prepayment history for all applicable securities. Conditional prepayment rates, computed with life to date factor histories and weighted average maturities, are used to effect the calculation of projected and prepayments for pass-through security types. Other invested assets include limited partnerships, a private placement liquidity sweep facility and rabbi trusts. Cash contributions to and cash distributions from the sweep facility are reported gross in cash flows from investing activities in the Consolidated Statements of Cash Flows. Limited partnerships are accounted for under the equity method of accounting, which can be recorded on a monthly or quarterly lag.
Uncollectible Receivable Balances	C. Uncollectible Receivable Balances. The Company provides reserves for uncollectible reinsurance recoverable and premium receivable balances based on management's assessment of the collectability of the outstanding balances. Such reserves are presented in the table below for the periods indicated. Years Ended December 31, (Dollars in thousands) 2016 2015 Reinsurance receivables and premium receivables $ 23,360 $ 22,878
Deferred Acquisition Costs	D. Deferred Acquisition Costs. Acquisition costs, consisting principally of commissions and brokerage expenses and certain premium taxes and fees incurred at the time a contract or policy is issued and that vary with and are directly related to the Company's reinsurance and insurance business, are deferred and amortized over the period in which the related premiums are earned. Deferred acquisition costs are limited to their estimated realizable value by line of business based on the related unearned premiums, anticipated claims and claim expenses and anticipated investment income. Deferred acquisition costs amortized to income are presented in the table below for the periods indicated. Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Deferred acquisition costs $ 1,188,692 $ 1,183,646 $ 1,121,145
Reserve For Losses And Loss Adjustment Expenses	E. Reserve for Losses and Loss Adjustment Expenses. The reserve for losses and loss adjustment expenses ("LAE") is based on individual case estimates and reports received from ceding companies. A provision is included for losses and LAE incurred but not reported ("IBNR") based on past experience. A provision is also included for certain potential liabilities relating to asbestos and environmental ("A&E") exposures, which liabilities cannot be estimated using traditional reserving techniques. See also Note 3. The reserves are reviewed periodically and any changes in estimates are reflected in earnings in the period the adjustment is made. The Company's loss and LAE reserves represent management's best estimate of the ultimate liability. Loss and LAE reserves are presented gross of reinsurance receivables and incurred losses and LAE are presented net of reinsurance. Accruals for commissions are established for reinsurance contracts that provide for the stated commission percentage to increase or decrease based on the loss experience of the contract. Changes in estimates for such arrangements are recorded as commission expense. Commission accruals for contracts with adjustable features are estimated based on expected loss and LAE.
Future Policy Benefit Reserve	F. Future Policy Benefit Reserve. Liabilities for future policy benefits on annuity policies are carried at their accumulated values. Reserves for policy benefits include mortality claims in the process of settlement and IBNR claims. Actual experience in a particular period may fluctuate from expected results.
Premium Revenues	G. Premium Revenues. Written premiums are earned ratably over the periods of the related insurance and reinsurance contracts. Unearned premium reserves are established relative to the unexpired contract period. Such reserves are established based upon reports received from ceding companies or estimated using pro rata methods based on statistical data. Reinstatement premiums represent additional premium received on reinsurance coverages, most prevalently catastrophe related, when limits have been depleted under the original reinsurance contract and additional coverage is granted. Written and earned premiums and the related costs, which have not yet been reported to the Company, are estimated and accrued. Premiums are net of ceded reinsurance. Payout annuity premiums are recognized as revenue over the premium-paying period of the policies.
Prepaid Reinsurance Premiums	H. Prepaid Reinsurance Premiums. Prepaid reinsurance premiums represent unearned premium reserves ceded to other reinsurers. Prepaid reinsurance premiums for any foreign reinsurers comprising more than 10
Income Taxes	I. Income Taxes. Holdings and its wholly-owned subsidiaries file a consolidated U.S. federal income tax return. Foreign subsidiaries and branches of subsidiaries file local tax returns as required. Group and subsidiaries not included in Holdings' consolidated tax return file separate company U.S. federal income tax returns as required. Deferred income taxes have been recorded to recognize the tax effect of temporary differences between the financial reporting and income tax bases of assets and liabilities, which arise because of differences between GAAP and income tax accounting rules.
Foreign Currency	J. Foreign Currency. As a global entity, the Company transacts business in numerous currencies through business units located around the world. The base transactional currency for each business unit is determined by the local currency used for most economic activity in that area. Movements in exchange rates related to assets and liabilities at the business units between the original currency and the base currency are recorded through the consolidated statements of operations and comprehensive income (loss) in other income (expense), except for currency movements related to available for sale investments, which are excluded from net income (loss) and accumulated in shareholders' equity, net of deferred taxes. The business units' base currency financial statements are translated to U.S. dollars using the exchange rates at the end of period for the balance sheets and the average exchange rates in effect for the reporting period for the income statements. Gains and losses resulting from translating the foreign currency financial statements, net of deferred income taxes, are excluded from net income loss and accumulated in shareholder's equity.
Earnings Per Common Share	K. Earnings Per Common Share. Basic earnings per share are calculated by dividing net income by the weighted average number of common shares outstanding. Diluted earnings per share reflect the potential dilution that would occur if options granted under various share-based compensation plans were exercised resulting in the issuance of common shares that would participate in the earnings of the entity. Net income (loss) attributable to Everest Re Group per common share has been computed as per below, based upon weighted average common basic and dilutive shares outstanding. Years Ended December 31, (Dollars in thousands, except per share amounts) 2016 2015 2014 Net income (loss) per share: Numerator Net income (loss) $ 996,344 $ 977,869 $ 1,199,156 Less: dividends declared-common shares and nonvested common shares (195,384 ) (175,107 ) (145,913 ) Undistributed earnings 800,960 802,762 1,053,243 Percentage allocated to common shareholders (1) 98.9 % 98.9 % 99.0 % 792,415 794,309 1,042,423 Add: dividends declared-common shareholders 193,413 173,367 144,447 Numerator for basic and diluted earnings per common share $ 985,829 $ 967,676 $ 1,186,870 Denominator Denominator for basic earnings per weighted-average common shares 41,329 43,415 45,377 Effect of dilutive securities: Options 300 380 425 Denominator for diluted earnings per adjusted weighted-average common shares 41,628 43,795 45,802 Per common share net income (loss) Basic $ 23.85 $ 22.29 $ 26.16 Diluted $ 23.68 $ 22.10 $ 25.91 (1) 41,329 43,415 45,377 Basic weighted-average common shares outstanding and nonvested common shares expected to vest 41,774 43,877 45,848 Percentage allocated to common shareholders 98.9 % 98.9 % 99.0 % (Some amounts may not reconcile due to rounding.) There were no All outstanding options expire on or between February 21, 2017 September 19, 2022
Segmentation	L. Segmentation. The Company, through its subsidiaries, operates in four
Derivatives	M. Derivatives. The Company sold seven equity index put option contracts, based on two indices, in 2001 and 2005, which remain outstanding. The Company sold these equity index put options as insurance products with the intent of achieving a profit. These equity index put option contracts meet the definition of a derivative under FASB guidance and the Company's position in these equity index put option contracts is unhedged. Accordingly, these equity index put option contracts are carried at fair value in the consolidated balance sheets with changes in fair value recorded in the consolidated statements of operations and comprehensive income (loss). The fair value of the equity index put options can be found in the Company's consolidated balance sheets as follows: (Dollars in thousands) Derivatives not designated as Location of fair value At December 31, hedging instruments in balance sheets 2016 2015 Equity index put option contracts Equity index put option liability $ 22,059 $ 40,705 Total $ 22,059 $ 40,705 The change in fair value of the equity index put option contracts can be found in the Company's statement of operations and comprehensive income (loss) as follows: (Dollars in thousands) Derivatives not designated as Location of gain (loss) in statements of For the Years Ended December 31, hedging instruments operations and comprehensive income (loss) 2016 2015 2014 Equity index put option contracts Net derivative gain (loss) $ 18,647 $ 6,317 $ (11,599 ) Total $ 18,647 $ 6,317 $ (11,599 )
Deposit Assets And Liabilities	N. Deposit Assets and Liabilities. In the normal course of its operations, the Company may enter into contracts that do not meet risk transfer provisions. Such contracts are accounted for using the deposit accounting method and are included in other liabilities in the Company's consolidated balance sheets. For such contracts, the Company originally records deposit liabilities for an amount equivalent to the assets received. Actuarial studies are used to estimate the final liabilities under such contracts with any change reflected in the consolidated statements of operations and comprehensive income (loss).
Share-Based Compensation	O. Share-Based Compensation. Share-based compensation stock option, restricted share and performance share unit awards are fair valued at the grant date and expensed over the vesting period of the award. The tax benefit on the recorded expense is deferred until the time the award is exercised or vests (becomes unrestricted). See Note 16.
Application Of Recently Issued Accounting Guidance	P. Application of Recently Issued Accounting Guidance. Accounting for Share-Based Compensation. Disclosures about Short-Duration Contracts. Disclosures for Investments in Certain Entities that Calculate Net Asset Value Per Share. Debt Issuance Costs. Consolidation. The following tables present certain financial statement line items as previously reported in 2015 and 2014, the effect on those line items due to not consolidating the segregated accounts of Mt. Logan Re, in accordance with the newly adopted accounting policy and the line items as currently reported within the financial statements. CONSOLIDATED BALANCE SHEET: December 31, 2015 Effect of adoption As previously of new accounting reported policy As adopted (Dollars in thousands) ASSETS: Short-term investments $ 1,795,455 $ (995,771 ) $ 799,684 Total investments and cash 17,672,176 (995,771 ) 16,676,405 Premiums receivable 1,479,293 3,797 1,483,090 Reinsurance receivables 840,420 53,617 894,037 Deferred acquisition costs 373,072 (721 ) 372,351 Prepaid reinsurance premiums 157,424 7,547 164,971 Other assets 265,634 56,184 321,818 TOTAL ASSETS 21,426,175 (875,347 ) 20,550,828 LIABILITIES: Funds held under reinsurance treaties 88,544 (75,000 ) 13,544 Commission reserves 79,849 (19,751 ) 60,098 Other net payable to reinsurers 166,822 6,265 173,087 Other liabilities 291,322 (30,000 ) 261,322 Total liabilities 13,060,729 (118,486 ) 12,942,243 NONCONTROLLING INTERESTS: Redeemable noncontrolling interests - Mt. Logan Re 756,861 (756,861 ) - TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY 21,426,175 (875,347 ) 20,550,828 CONSOLIDATED STATEMENTS OF OPERATIONS Twelve Months Ended December 31, 2015 Twelve Months Ended December 31, 2014 AND COMPREHENSIVE INCOME (LOSS): Effect of Effect of adoption of adoption of As previously new accounting As previously new accounting reported policy As adopted reported policy As adopted (Dollars in thousands) REVENUES: Premiums earned $ 5,481,459 $ (188,617 ) $ 5,292,842 $ 5,169,135 $ (125,428 ) $ 5,043,707 Net investment income 473,825 (352 ) 473,473 530,570 (85 ) 530,485 Other income (expense) 60,435 27,845 88,280 18,437 13,871 32,308 Total revenues 5,837,889 (161,124 ) 5,676,765 5,790,589 (111,642 ) 5,678,947 CLAIMS AND EXPENSES: Incurred losses and loss adjustment expenses 3,101,915 (37,200 ) 3,064,715 2,906,534 (30,598 ) 2,875,936 Commission, brokerage, taxes and fees 1,202,036 (18,390 ) 1,183,646 1,135,586 (14,441 ) 1,121,145 Other underwriting expenses 265,984 (8,915 ) 257,069 240,400 (7,296 ) 233,104 Total claims and expenses 4,629,380 (64,505 ) 4,564,875 4,344,474 (52,335 ) 4,292,139 INCOME (LOSS) BEFORE TAXES 1,208,509 (96,619 ) 1,111,890 1,446,115 (59,307 ) 1,386,808 NET INCOME (LOSS) 1,074,488 (96,619 ) 977,869 1,258,463 (59,307 ) 1,199,156 Net income (loss) attributable to noncontrolling interests (96,619 ) 96,619 - (59,307 ) 59,307 - NET INCOME (LOSS) ATTRIBUTABLE TO EVEREST RE GROUP 977,869 (977,869 ) - 1,199,156 (1,199,156 ) - CONSOLIDATED STATEMENT OF CASH FLOWS: Twelve Months Ended December 31, 2015 Twelve Months Ended December 31, 2014 Effect of Effect of adoption of adoption of As previously new accounting As previously new accounting (Dollars in thousands) reported policy As adopted reported policy As adopted CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 1,074,488 $ (96,619 ) $ 977,869 $ 1,258,463 $ (59,307 ) $ 1,199,156 Decrease (increase) in premiums receivable (93,837 ) (4,374 ) (98,211 ) 45,282 3,089 48,371 Decrease (increase) in funds held by reinsureds, net 31,225 (75,000 ) (43,775 ) (1,835 ) - (1,835 ) Decrease (increase) in reinsurance receivables (240,414 ) (24,689 ) (265,103 ) (186,014 ) (24,634 ) (210,648 ) Decrease (increase) in prepaid reinsurance premiums (14,486 ) (7,333 ) (21,819 ) (79,086 ) 956 (78,130 ) Increase (decrease) in other net payable to reinsurers 38,262 5,465 43,727 29,410 (1,102 ) 28,308 Change in other assets and liabilities, net 264 (9,198 ) (8,934 ) 35,419 (178,054 ) (142,635 ) Net cash provided by (used in) operating activities 1,308,382 (211,748 ) 1,096,634 1,313,821 (259,059 ) 1,054,762 CASH FLOWS FROM INVESTING ACTIVITIES: Net change in short-term investments (98,903 ) 440,636 341,733 (497,983 ) 421,500 (76,483 ) Net cash provided by (used in) investing activities (1,121,737 ) 440,636 (681,101 ) (1,180,072 ) 421,500 (758,572 ) CASH FLOWS FROM FINANCING ACTIVITIES: Third party investment in redeemable noncontrolling interest 266,848 (266,848 ) - 136,200 (136,200 ) - Subscription advances for third party redeemable noncontrolling interest 30,000 (30,000 ) - 40,000 (40,000 ) - Dividends paid on third party investment in redeemable noncontrolling interest (68,158 ) 68,158 - (10,334 ) 10,334 - Net cash provided by (used in) financing activities (332,879 ) (228,690 ) (561,569 ) (312,232 ) (165,866 ) (478,098 ) EFFECT OF EXCHANGE RATE CHANGES ON CASH (7,582 ) (198 ) (7,780 ) 4,575 3,425 8,000

Summary Of Significant Accoun33

Summary Of Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2016
Summary Of Significant Accounting Policies [Abstract]
Schedule Of Uncollectible Reinsurance Recoverable And Premium Receivables	Years Ended December 31, (Dollars in thousands) 2016 2015 Reinsurance receivables and premium receivables $ 23,360 $ 22,878
Schedule Of Deferred Acquisition Costs Amortized To Income	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Deferred acquisition costs $ 1,188,692 $ 1,183,646 $ 1,121,145
Net Income (Loss) Per Common Share	Years Ended December 31, (Dollars in thousands, except per share amounts) 2016 2015 2014 Net income (loss) per share: Numerator Net income (loss) $ 996,344 $ 977,869 $ 1,199,156 Less: dividends declared-common shares and nonvested common shares (195,384 ) (175,107 ) (145,913 ) Undistributed earnings 800,960 802,762 1,053,243 Percentage allocated to common shareholders (1) 98.9 % 98.9 % 99.0 % 792,415 794,309 1,042,423 Add: dividends declared-common shareholders 193,413 173,367 144,447 Numerator for basic and diluted earnings per common share $ 985,829 $ 967,676 $ 1,186,870 Denominator Denominator for basic earnings per weighted-average common shares 41,329 43,415 45,377 Effect of dilutive securities: Options 300 380 425 Denominator for diluted earnings per adjusted weighted-average common shares 41,628 43,795 45,802 Per common share net income (loss) Basic $ 23.85 $ 22.29 $ 26.16 Diluted $ 23.68 $ 22.10 $ 25.91 (1) 41,329 43,415 45,377 Basic weighted-average common shares outstanding and nonvested common shares expected to vest 41,774 43,877 45,848 Percentage allocated to common shareholders 98.9 % 98.9 % 99.0 % (Some amounts may not reconcile due to rounding.)
Fair Value Of The Equity Index Put Options	(Dollars in thousands) Derivatives not designated as Location of fair value At December 31, hedging instruments in balance sheets 2016 2015 Equity index put option contracts Equity index put option liability $ 22,059 $ 40,705 Total $ 22,059 $ 40,705
Change In Fair Value Of The Equity Index Put Option Contracts	(Dollars in thousands) Derivatives not designated as Location of gain (loss) in statements of For the Years Ended December 31, hedging instruments operations and comprehensive income (loss) 2016 2015 2014 Equity index put option contracts Net derivative gain (loss) $ 18,647 $ 6,317 $ (11,599 ) Total $ 18,647 $ 6,317 $ (11,599 )
Schedule of Effect of Newly Adopted Accounting Policies, Balance Sheet	CONSOLIDATED BALANCE SHEET: December 31, 2015 Effect of adoption As previously of new accounting reported policy As adopted (Dollars in thousands) ASSETS: Short-term investments $ 1,795,455 $ (995,771 ) $ 799,684 Total investments and cash 17,672,176 (995,771 ) 16,676,405 Premiums receivable 1,479,293 3,797 1,483,090 Reinsurance receivables 840,420 53,617 894,037 Deferred acquisition costs 373,072 (721 ) 372,351 Prepaid reinsurance premiums 157,424 7,547 164,971 Other assets 265,634 56,184 321,818 TOTAL ASSETS 21,426,175 (875,347 ) 20,550,828 LIABILITIES: Funds held under reinsurance treaties 88,544 (75,000 ) 13,544 Commission reserves 79,849 (19,751 ) 60,098 Other net payable to reinsurers 166,822 6,265 173,087 Other liabilities 291,322 (30,000 ) 261,322 Total liabilities 13,060,729 (118,486 ) 12,942,243 NONCONTROLLING INTERESTS: Redeemable noncontrolling interests - Mt. Logan Re 756,861 (756,861 ) - TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY 21,426,175 (875,347 ) 20,550,828
Schedule of Effect of Newly Adopted Accounting Policies, Operations and Comprehensive Income	CONSOLIDATED STATEMENTS OF OPERATIONS Twelve Months Ended December 31, 2015 Twelve Months Ended December 31, 2014 AND COMPREHENSIVE INCOME (LOSS): Effect of Effect of adoption of adoption of As previously new accounting As previously new accounting reported policy As adopted reported policy As adopted (Dollars in thousands) REVENUES: Premiums earned $ 5,481,459 $ (188,617 ) $ 5,292,842 $ 5,169,135 $ (125,428 ) $ 5,043,707 Net investment income 473,825 (352 ) 473,473 530,570 (85 ) 530,485 Other income (expense) 60,435 27,845 88,280 18,437 13,871 32,308 Total revenues 5,837,889 (161,124 ) 5,676,765 5,790,589 (111,642 ) 5,678,947 CLAIMS AND EXPENSES: Incurred losses and loss adjustment expenses 3,101,915 (37,200 ) 3,064,715 2,906,534 (30,598 ) 2,875,936 Commission, brokerage, taxes and fees 1,202,036 (18,390 ) 1,183,646 1,135,586 (14,441 ) 1,121,145 Other underwriting expenses 265,984 (8,915 ) 257,069 240,400 (7,296 ) 233,104 Total claims and expenses 4,629,380 (64,505 ) 4,564,875 4,344,474 (52,335 ) 4,292,139 INCOME (LOSS) BEFORE TAXES 1,208,509 (96,619 ) 1,111,890 1,446,115 (59,307 ) 1,386,808 NET INCOME (LOSS) 1,074,488 (96,619 ) 977,869 1,258,463 (59,307 ) 1,199,156 Net income (loss) attributable to noncontrolling interests (96,619 ) 96,619 - (59,307 ) 59,307 - NET INCOME (LOSS) ATTRIBUTABLE TO EVEREST RE GROUP 977,869 (977,869 ) - 1,199,156 (1,199,156 ) -
Schedule of Effect of Newly Adopted Accounting Policies, Cash Flow	CONSOLIDATED STATEMENT OF CASH FLOWS: Twelve Months Ended December 31, 2015 Twelve Months Ended December 31, 2014 Effect of Effect of adoption of adoption of As previously new accounting As previously new accounting (Dollars in thousands) reported policy As adopted reported policy As adopted CASH FLOWS FROM OPERATING ACTIVITIES: Net income (loss) $ 1,074,488 $ (96,619 ) $ 977,869 $ 1,258,463 $ (59,307 ) $ 1,199,156 Decrease (increase) in premiums receivable (93,837 ) (4,374 ) (98,211 ) 45,282 3,089 48,371 Decrease (increase) in funds held by reinsureds, net 31,225 (75,000 ) (43,775 ) (1,835 ) - (1,835 ) Decrease (increase) in reinsurance receivables (240,414 ) (24,689 ) (265,103 ) (186,014 ) (24,634 ) (210,648 ) Decrease (increase) in prepaid reinsurance premiums (14,486 ) (7,333 ) (21,819 ) (79,086 ) 956 (78,130 ) Increase (decrease) in other net payable to reinsurers 38,262 5,465 43,727 29,410 (1,102 ) 28,308 Change in other assets and liabilities, net 264 (9,198 ) (8,934 ) 35,419 (178,054 ) (142,635 ) Net cash provided by (used in) operating activities 1,308,382 (211,748 ) 1,096,634 1,313,821 (259,059 ) 1,054,762 CASH FLOWS FROM INVESTING ACTIVITIES: Net change in short-term investments (98,903 ) 440,636 341,733 (497,983 ) 421,500 (76,483 ) Net cash provided by (used in) investing activities (1,121,737 ) 440,636 (681,101 ) (1,180,072 ) 421,500 (758,572 ) CASH FLOWS FROM FINANCING ACTIVITIES: Third party investment in redeemable noncontrolling interest 266,848 (266,848 ) - 136,200 (136,200 ) - Subscription advances for third party redeemable noncontrolling interest 30,000 (30,000 ) - 40,000 (40,000 ) - Dividends paid on third party investment in redeemable noncontrolling interest (68,158 ) 68,158 - (10,334 ) 10,334 - Net cash provided by (used in) financing activities (332,879 ) (228,690 ) (561,569 ) (312,232 ) (165,866 ) (478,098 ) EFFECT OF EXCHANGE RATE CHANGES ON CASH (7,582 ) (198 ) (7,780 ) 4,575 3,425 8,000

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2016
Investments [Abstract]
Summary Of Unrealized Appreciation (Depreciation) Of Available For Sale, Fixed Maturity And Equity Security Investments	At December 31, 2016 Amortized Unrealized Unrealized Market OTTI in AOCI (Dollars in thousands) Cost Appreciation Depreciation Value (a) Fixed maturity securities U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,115,208 $ 20,410 $ (5,303 ) $ 1,130,315 $ - Obligations of U.S. states and political subdivisions 723,938 18,016 (11,970 ) 729,984 - Corporate securities 5,059,388 131,651 (35,758 ) 5,155,281 7,936 Asset-backed securities 488,824 1,110 (1,286 ) 488,648 - Mortgage-backed securities Commercial 308,827 1,983 (3,878 ) 306,932 - Agency residential 2,415,901 17,478 (27,910 ) 2,405,469 - Non-agency residential 642 44 (45 ) 641 - Foreign government securities 1,254,175 61,226 (57,241 ) 1,258,160 115 Foreign corporate securities 2,565,710 130,714 (64,446 ) 2,631,978 1,184 Total fixed maturity securities $ 13,932,613 $ 382,632 $ (207,837 ) $ 14,107,408 $ 9,235 Equity securities $ 129,553 $ 2,298 $ (12,784 ) $ 119,067 $ - At December 31, 2015 Amortized Unrealized Unrealized Market OTTI in AOCI (Dollars in thousands) Cost Appreciation Depreciation Value (a) Fixed maturity securities U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 805,273 $ 13,465 $ (1,861 ) $ 816,877 $ - Obligations of U.S. states and political subdivisions 669,945 34,020 (890 ) 703,075 - Corporate securities 4,817,014 97,159 (109,310 ) 4,804,863 1,412 Asset-backed securities 470,320 719 (3,813 ) 467,226 - Mortgage-backed securities Commercial 264,924 4,750 (3,375 ) 266,299 - Agency residential 2,313,265 25,318 (18,059 ) 2,320,524 - Non-agency residential 893 51 (46 ) 898 - Foreign government securities 1,256,983 54,403 (52,205 ) 1,259,181 53 Foreign corporate securities 2,677,589 107,163 (66,401 ) 2,718,351 36 Total fixed maturity securities $ 13,276,206 $ 337,048 $ (255,960 ) $ 13,357,294 $ 1,501 Equity securities $ 122,271 $ 3,401 $ (16,732 ) $ 108,940 $ - (a)
Summary Of Amortized Cost And Market Value Of Fixed Maturity Securities, By Contractual Maturity	At December 31, 2016 At December 31, 2015 Amortized Market Amortized Market (Dollars in thousands) Cost Value Cost Value Fixed maturity securities - available for sale: Due in one year or less $ 956,945 $ 966,970 $ 1,021,200 $ 1,036,016 Due after one year through five years 6,769,585 6,870,056 6,193,426 6,220,563 Due after five years through ten years 2,020,215 2,052,733 2,217,075 2,203,932 Due after ten years 971,674 1,015,959 795,103 841,836 Asset-backed securities 488,824 488,648 470,320 467,226 Mortgage-backed securities: Commercial 308,827 306,932 264,924 266,299 Agency residential 2,415,901 2,405,469 2,313,265 2,320,524 Non-agency residential 642 641 893 898 Total fixed maturity securities $ 13,932,613 $ 14,107,408 $ 13,276,206 $ 13,357,294
Summary Of Changes In Net Unrealized Appreciation (Depreciation) For The Company's Investments	Years Ended December 31, (Dollars in thousands) 2016 2015 Increase (decrease) during the period between the market value and cost of investments carried at market value, and deferred taxes thereon: Fixed maturity securities $ 85,972 $ (197,231 ) Fixed maturity securities, other-than-temporary impairment 7,734 8,411 Equity securities 2,845 (5,215 ) Other invested assets 60 - Change in unrealized appreciation (depreciation), pre-tax 96,611 (194,035 ) Deferred tax benefit (expense) (22,075 ) 16,979 Deferred tax benefit (expense), other-than-temporary impairment (1,789 ) (3,383 ) Change in unrealized appreciation (depreciation), net of deferred taxes, included in shareholders' equity $ 72,747 $ (180,439 )
Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Security Type	Duration of Unrealized Loss at December 31, 2016 By Security Type Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities - available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 638,740 $ (5,303 ) $ - $ - $ 638,740 $ (5,303 ) Obligations of U.S. states and political subdivisions 221,088 (11,486 ) 564 (484 ) 221,652 (11,970 ) Corporate securities 1,360,743 (24,023 ) 177,153 (11,735 ) 1,537,896 (35,758 ) Asset-backed securities 150,023 (565 ) 18,786 (721 ) 168,809 (1,286 ) Mortgage-backed securities Commercial 143,554 (3,223 ) 7,184 (655 ) 150,738 (3,878 ) Agency residential 1,618,372 (22,461 ) 189,665 (5,449 ) 1,808,037 (27,910 ) Non-agency residential - - 113 (45 ) 113 (45 ) Foreign government securities 360,289 (12,041 ) 236,820 (45,200 ) 597,109 (57,241 ) Foreign corporate securities 687,599 (12,769 ) 295,500 (51,677 ) 983,099 (64,446 ) Total fixed maturity securities $ 5,180,408 $ (91,871 ) $ 925,785 $ (115,966 ) $ 6,106,193 $ (207,837 ) Equity securities - - 105,507 (12,784 ) 105,507 (12,784 ) Total $ 5,180,408 $ (91,871 ) $ 1,031,292 $ (128,750 ) $ 6,211,700 $ (220,621 ) Duration of Unrealized Loss at December 31, 2015 By Security Type Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities - available for sale U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 539,177 $ (1,855 ) $ 692 $ (6 ) $ 539,869 $ (1,861 ) Obligations of U.S. states and political subdivisions 6,434 (84 ) 4,917 (806 ) 11,351 (890 ) Corporate securities 1,818,331 (74,161 ) 440,682 (35,149 ) 2,259,013 (109,310 ) Asset-backed securities 348,545 (2,510 ) 67,230 (1,303 ) 415,775 (3,813 ) Mortgage-backed securities Commercial 145,490 (3,375 ) - - 145,490 (3,375 ) Agency residential 1,021,390 (10,014 ) 326,449 (8,045 ) 1,347,839 (18,059 ) Non-agency residential 152 (2 ) 38 (44 ) 190 (46 ) Foreign government securities 227,384 (21,996 ) 216,428 (30,209 ) 443,812 (52,205 ) Foreign corporate securities 821,548 (25,627 ) 295,389 (40,774 ) 1,116,937 (66,401 ) Total fixed maturity securities $ 4,928,451 $ (139,624 ) $ 1,351,825 $ (116,336 ) $ 6,280,276 $ (255,960 ) Equity securities - - 91,907 (16,732 ) 91,907 (16,732 ) Total $ 4,928,451 $ (139,624 ) $ 1,443,732 $ (133,068 ) $ 6,372,183 $ (272,692 )
Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Contractual Maturity	Duration of Unrealized Loss at December 31, 2016 By Maturity Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities Due in one year or less $ 178,281 $ (1,122 ) $ 78,153 $ (14,318 ) $ 256,434 $ (15,440 ) Due in one year through five years 2,123,113 (26,263 ) 538,130 (84,803 ) 2,661,243 (111,066 ) Due in five years through ten years 680,334 (22,555 ) 86,631 (8,754 ) 766,965 (31,309 ) Due after ten years 286,731 (15,682 ) 7,123 (1,221 ) 293,854 (16,903 ) Asset-backed securities 150,023 (565 ) 18,786 (721 ) 168,809 (1,286 ) Mortgage-backed securities 1,761,926 (25,684 ) 196,962 (6,149 ) 1,958,888 (31,833 ) Total fixed maturity securities $ 5,180,408 $ (91,871 ) $ 925,785 $ (115,966 ) $ 6,106,193 $ (207,837 ) Duration of Unrealized Loss at December 31, 2015 By Maturity Less than 12 months Greater than 12 months Total Gross Gross Gross Unrealized Unrealized Unrealized (Dollars in thousands) Market Value Depreciation Market Value Depreciation Market Value Depreciation Fixed maturity securities Due in one year or less $ 29,737 $ (1,840 ) $ 74,615 $ (13,440 ) $ 104,352 $ (15,280 ) Due in one year through five years 2,328,805 (62,329 ) 651,228 (59,993 ) 2,980,033 (122,322 ) Due in five years through ten years 969,139 (52,725 ) 206,538 (28,018 ) 1,175,677 (80,743 ) Due after ten years 85,193 (6,829 ) 25,727 (5,493 ) 110,920 (12,322 ) Asset-backed securities 348,545 (2,510 ) 67,230 (1,303 ) 415,775 (3,813 ) Mortgage-backed securities 1,167,032 (13,391 ) 326,487 (8,089 ) 1,493,519 (21,480 ) Total fixed maturity securities $ 4,928,451 $ (139,624 ) $ 1,351,825 $ (116,336 ) $ 6,280,276 $ (255,960 )
Summary Of Components Of Net Investment Income	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Fixed maturities $ 410,337 $ 433,097 $ 462,757 Equity securities 40,707 45,617 47,193 Short-term investments and cash 1,769 1,225 1,550 Other invested assets Limited partnerships 38,647 14,431 40,868 Other 2,852 1,804 3,619 Gross investment income before adjustments 494,312 496,174 555,988 Funds held interest income (expense) 7,853 10,767 9,471 Future policy benefit reserve income (expense) (1,633 ) (1,907 ) (1,686 ) Gross investment income 500,532 505,034 563,772 Investment expenses (27,447 ) (31,561 ) (33,287 ) Net investment income $ 473,085 $ 473,473 $ 530,485
Summary Of Components Of Net Realized Capital Gains (Losses)	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Fixed maturity securities, market value: Other-than-temporary impairments $ (31,595 ) $ (102,199 ) $ (39,502 ) Gains (losses) from sales 6,918 (22,310 ) 4,408 Fixed maturity securities, fair value: Gains (losses) from sales (1,586 ) 24 (3,137 ) Gains (losses) from fair value adjustments 1,381 (44 ) (1,498 ) Equity securities, market value: Gains (losses) from sales 1,426 (6,702 ) 426 Equity securities, fair value: Gains (losses) from sales (13,442 ) (7,305 ) 156 Gains (losses) from fair value adjustments 57,686 (45,627 ) 123,196 Sale of Subsidiary (28,032 ) - - Other invested assets 18 - - Short-term investments gain (loss) 10 16 (3 ) Total net realized capital gains (losses) $ (7,216 ) $ (184,147 ) $ 84,046
Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Proceeds from sales of fixed maturity securities $ 1,264,271 $ 1,725,917 $ 1,848,268 Gross gains from sales 53,093 47,899 37,427 Gross losses from sales (47,761 ) (70,185 ) (36,156 ) Proceeds from sales of equity securities $ 729,782 $ 642,980 $ 600,970 Gross gains from sales 18,462 27,675 20,900 Gross losses from sales (30,478 ) (41,682 ) (20,318 )

Reserve For Losses, LAE And F35

Reserve For Losses, LAE And Future Policy Benefit Reserve (Tables)	12 Months Ended
	Dec. 31, 2016
Reserve For Losses LAE And Future Policy Benefit Reserve [Abstract]
Summary Of Activity In The Reserve For Losses And LAE	At December 31, (Dollars in thousands) 2016 2015 2014 Gross reserves at January 1 $ 9,951,798 $ 9,720,813 $ 9,673,240 Less reinsurance recoverables (881,503 ) (655,095 ) (478,151 ) Net reserves at January 1 9,070,295 9,065,718 9,195,089 Incurred related to: Current year 3,434,964 3,129,744 2,915,612 Prior years (295,335 ) (65,029 ) (39,676 ) Total incurred losses and LAE 3,139,629 3,064,715 2,875,936 Paid related to: Current year 745,642 690,030 755,880 Prior years 2,042,972 2,180,076 2,088,772 Total paid losses and LAE 2,788,614 2,870,106 2,844,652 Foreign exchange/translation adjustment (99,859 ) (190,032 ) (160,655 ) Net reserves at December 31 9,321,451 9,070,295 9,065,718 Plus reinsurance recoverables 990,862 881,503 655,095 Gross reserves at December 31 $ 10,312,313 $ 9,951,798 $ 9,720,813
Ultimate Loss and ALAE And Paid Loss And ALAE, Net Of Reinsurance	U.S. Reinsurance - Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 400,944 $ 395,674 $ 328,910 $ 324,870 $ 320,908 69,381 N/A 2013 310,899 388,247 385,498 388,157 147,320 N/A 2014 367,454 383,597 392,300 215,144 N/A 2015 326,321 354,224 248,529 N/A 2016 330,352 272,614 N/A $ 1,785,940 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 9,930 $ 38,398 $ 82,900 $ 143,370 $ 187,125 2013 14,814 48,891 108,736 170,781 2014 18,791 54,220 110,199 2015 19,882 53,592 2016 18,920 $ 540,617 All outstanding liabilities prior to 2012, net of reinsurance 1,103,846 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 2,349,169 (Some amounts may not reconcile due to rounding.) U.S. Reinsurance - Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 937,168 $ 723,126 $ 621,543 $ 608,568 $ 608,182 15,899 N/A 2013 621,644 547,741 494,573 455,623 8,005 N/A 2014 641,489 550,471 473,579 46,920 N/A 2015 679,170 543,978 113,327 N/A 2016 966,314 488,562 N/A $ 3,047,676 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 242,129 $ 401,879 $ 492,597 $ 528,903 $ 546,305 2013 234,163 322,603 381,281 405,331 2014 218,595 321,473 369,615 2015 226,198 327,261 2016 286,082 $ 1,934,594 All outstanding liabilities prior to 2012, net of reinsurance 70,472 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 1,183,554 (Some amounts may not reconcile due to rounding.) International - Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 222,381 $ 145,165 $ 134,433 $ 134,806 $ 118,381 19,893 N/A 2013 182,388 167,152 164,664 146,192 38,720 N/A 2014 194,110 187,335 170,072 66,586 N/A 2015 192,610 179,393 99,975 N/A 2016 183,120 135,120 N/A $ 797,159 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 18,968 $ 30,309 $ 46,356 $ 56,937 $ 66,755 2013 17,945 41,511 55,190 68,508 2014 25,854 45,309 63,412 2015 24,408 49,198 2016 26,582 $ 274,456 All outstanding liabilities prior to 2012, net of reinsurance 132,472 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 655,175 (Some amounts may not reconcile due to rounding.) International - Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 562,356 $ 516,568 $ 464,379 $ 468,016 $ 468,340 3,276 N/A 2013 493,798 446,011 409,911 402,109 5,153 N/A 2014 590,986 536,437 491,539 73,701 N/A 2015 563,857 439,133 68,845 N/A 2016 510,072 151,258 N/A $ 2,311,193 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 200,839 $ 327,627 $ 396,237 $ 420,097 $ 433,538 2013 135,240 272,527 326,747 357,358 2014 163,098 285,019 352,586 2015 145,406 267,899 2016 150,819 $ 1,562,200 All outstanding liabilities prior to 2012, net of reinsurance 135,170 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 884,163 (Some amounts may not reconcile due to rounding.) Bermuda - Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 277,335 $ 257,552 $ 238,136 $ 228,861 $ 236,554 69,097 N/A 2013 223,085 254,485 250,151 259,719 120,413 N/A 2014 205,404 239,078 257,310 163,951 N/A 2015 263,919 293,967 196,691 N/A 2016 282,729 208,938 N/A $ 1,330,278 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 12,975 $ 29,971 $ 52,026 $ 76,682 $ 103,489 2013 17,185 34,498 53,035 78,476 2014 13,846 25,272 43,582 2015 13,664 58,647 2016 45,134 $ 329,328 All outstanding liabilities prior to 2012, net of reinsurance 507,747 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 1,508,697 (Some amounts may not reconcile due to rounding.) Bermuda - Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 233,738 $ 177,683 $ 162,787 $ 158,711 $ 159,285 624 N/A 2013 203,306 147,275 129,687 120,904 1,207 N/A 2014 178,615 157,187 131,588 13,592 N/A 2015 187,738 157,662 45,387 N/A 2016 198,310 123,224 N/A $ 767,749 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 45,233 $ 84,680 $ 115,938 $ 141,516 $ 148,159 2013 31,315 67,966 106,936 114,050 2014 28,540 81,535 101,239 2015 32,687 72,186 2016 26,324 $ 461,959 All outstanding liabilities prior to 2012, net of reinsurance 44,730 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 350,520 (Some amounts may not reconcile due to rounding.) Insurance - Casualty Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 349,301 $ 351,107 $ 346,685 $ 347,989 $ 353,145 50,190 15,638 2013 393,201 393,103 392,539 392,829 101,156 21,168 2014 430,554 456,532 454,071 151,768 24,829 2015 518,706 527,109 282,784 25,939 2016 552,006 406,759 23,463 $ 2,279,161 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 33,162 $ 101,258 $ 157,834 $ 213,365 $ 246,294 2013 33,303 117,016 176,280 224,558 2014 41,182 124,865 201,545 2015 44,298 134,658 2016 54,710 $ 861,765 All outstanding liabilities prior to 2012, net of reinsurance 644,177 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 2,061,572 (Some amounts may not reconcile due to rounding.) Insurance - Property Business At December 31, 2016 Total of IBNR Liabilites Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance Plus Expected Years Ended December 31, Development Cumulative 2012 2013 2014 2015 2016 on Reported Number of Accident Year (unaudited) (unaudited) (unaudited) (unaudited) Claims Reported Claims (Dollars in thousands) 2012 $ 106,229 $ 88,908 $ 81,682 $ 82,382 $ 81,957 52 N/A 2013 111,926 97,870 91,054 91,956 5 N/A 2014 131,505 123,487 119,781 1,044 N/A 2015 172,535 152,580 3,999 N/A 2016 300,127 82,989 N/A $ 746,400 (Some amounts may not reconcile due to rounding.) Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance Years Ended December 31, 2012 2013 2014 2015 2016 Accident Year (unaudited) (unaudited) (unaudited) (unaudited) (Dollars in thousands) 2012 $ 56,498 $ 81,712 $ 80,405 $ 81,686 $ 81,830 2013 68,656 92,945 91,653 91,923 2014 81,766 115,913 118,085 2015 102,005 141,010 2016 162,060 $ 594,908 All outstanding liabilities prior to 2012, net of reinsurance 171 Liabilities for claims and claim adjustment expenses, net of reinsurance $ 151,663 (Some amounts may not reconcile due to rounding.)
Average Annual Percentage Payout Incurred Claims By Age, Net Of Reinsurance	U.S. Reinsurance - Casualty Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 4.6% 9.0% 14.6% 17.3% 13.6% U.S. Reinsurance - Property Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 39.6% 21.7% 12.8% 5.7% 2.9% International - Casualty Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 14.3% 12.9% 11.0% 9.0% 8.3% International - Property Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 34.4% 28.2% 14.0% 6.3% 2.9% Bermuda - Casualty Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 7.7% 8.7% 7.8% 10.1% 11.3% Bermuda - Property Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 21.4% 29.6% 21.8% 11.7% 4.2% Insurance - Casualty Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Casualty 9.1% 18.9% 16.0% 13.9% 9.3% Insurance - Property Business Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance (unaudited) Years 1 2 3 4 5 Property 63.1% 27.5% -0.1% 0.9% 0.2%
Reconciliation of the Net Incurred and Paid Claims Development	December 31, 2016 (Dollars in thousands) Net outstanding liabilities U.S. Reinsurance Casualty $ 2,349,169 U.S. Reinsurance Property 1,183,554 International Casualty 655,175 International Property 884,163 Bermuda Casualty 1,508,697 Bermuda Property 350,520 Insurance Casualty 2,061,572 Insurance Property 151,663 Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance 9,144,514 Reinsurance recoverable on unpaid claims U.S. Reinsurance Casualty 98,282 U.S. Reinsurance Property 84,224 International Casualty 83,912 International Property 79,044 Bermuda Casualty 10,135 Bermuda Property 101,210 Insurance Casualty 498,493 Insurance Property 35,562 Total reinsurance recoverable on unpaid claims 990,862 Insurance lines other than short-duration - Unallocated claims adjustment expenses 132,210 Other 44,727 176,937 Total gross liability for unpaid claims and claim adjustment expense $ 10,312,313 (Some amounts may not reconcile due to rounding.)
Summary Of Incurred Losses With Respect To A&E Reserve On Both Gross And Net Of Reinsurance Basis	At December 31, (Dollars in thousands) 2016 2015 2014 Gross basis: Beginning of period reserves $ 433,117 $ 476,205 $ 402,461 Incurred losses 73,336 40,000 142,233 Paid losses (65,342 ) (83,088 ) (68,489 ) End of period reserves $ 441,111 $ 433,117 $ 476,205 Net basis: Beginning of period reserves $ 319,620 $ 458,211 $ 386,677 Incurred losses 53,909 38,440 137,769 Paid losses (54,457 ) (177,031 ) (66,235 ) End of period reserves $ 319,072 $ 319,620 $ 458,211
Summary Of Activity In The Reserve For Future Policy Benefits	At December 31, (Dollars in thousands) 2016 2015 2014 Balance at beginning of year $ 58,910 $ 59,820 $ 59,512 Liabilities assumed 175 315 250 Adjustments to reserves 303 2,310 4,724 Benefits paid in the current year (4,315 ) (3,535 ) (4,667 ) Balance at end of year $ 55,074 $ 58,910 $ 59,820 (Some amounts may not reconcile due to rounding.)

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value [Abstract]
Fair Value Measurement Levels For All Assets And Liabilities	Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2016 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, market value U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 1,130,315 $ - $ 1,130,315 $ - Obligations of U.S. States and political subdivisions 729,984 - 729,984 - Corporate securities 5,155,281 - 5,090,084 65,197 Asset-backed securities 488,648 - 488,648 - Mortgage-backed securities Commercial 306,932 - 306,932 - Agency residential 2,405,469 - 2,405,469 - Non-agency residential 641 - 641 - Foreign government securities 1,258,160 - 1,258,160 - Foreign corporate securities 2,631,978 - 2,629,440 2,538 Total fixed maturities, market value 14,107,408 - 14,039,673 67,735 Fixed maturities, fair value - - - - Equity securities, market value 119,067 105,507 13,560 - Equity securities, fair value 1,010,085 949,523 60,562 - Liabilities: Equity index put option contracts $ 22,059 $ - $ - $ 22,059 Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2015 (Level 1) (Level 2) (Level 3) Assets: Fixed maturities, market value U.S. Treasury securities and obligations of U.S. government agencies and corporations $ 816,877 $ - $ 816,877 $ - Obligations of U.S. States and political subdivisions 703,075 - 703,075 - Corporate securities 4,804,863 - 4,800,930 3,933 Asset-backed securities 467,226 - 467,226 - Mortgage-backed securities Commercial 266,299 - 266,299 - Agency residential 2,320,524 - 2,320,524 - Non-agency residential 898 - 898 - Foreign government securities 1,259,181 - 1,259,181 - Foreign corporate securities 2,718,351 - 2,716,758 1,593 Total fixed maturities, market value 13,357,294 - 13,351,768 5,526 Fixed maturities, fair value 2,102 - 2,102 - Equity securities, market value 108,940 91,907 17,033 - Equity securities, fair value 1,337,733 1,275,666 62,067 - Liabilities: Equity index put option contracts $ 40,705 $ - $ - $ 40,705
Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type	December 31, 2016 December 31, 2015 Corporate Foreign Corporate Foreign (Dollars in thousands) Securities CMBS Corporate Total Securities CMBS Corporate Total Beginning balance $ 3,933 $ - $ 1,593 $ 5,526 $ - $ 8,597 $ 7,166 $ 15,763 Total gains or (losses) (realized/unrealized) Included in earnings 100 - (1,193 ) (1,093 ) 4 - (9,480 ) (9,476 ) Included in other comprehensive income (loss) 41 16 - 57 (96 ) - 3,908 3,812 Purchases, issuances and settlements 63,054 (44 ) 2,138 65,148 3,626 - - 3,626 Transfers in and/or (out) of Level 3 (1,931 ) 28 - (1,903 ) 399 (8,597 ) (1 ) (8,199 ) Ending balance $ 65,197 $ - $ 2,538 $ 67,735 $ 3,933 $ - $ 1,593 $ 5,526 The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date $ - $ - $ - $ - $ - $ - $ 9,721 $ 9,721 (Some amounts may not reconcile due to rounding.)
Fair Value Measurements Using Significant Unobservable Inputs For Equity Index Put Option Contracts	Years Ended December 31, (Dollars in thousands) 2016 2015 Liabilities: Balance, beginning of period $ 40,705 $ 47,022 Total (gains) or losses (realized/unrealized) Included in earnings (18,646 ) (6,317 ) Included in other comprehensive income (loss) - - Purchases, issuances and settlements - - Transfers in and/or (out) of Level 3 - - Balance, end of period $ 22,059 $ 40,705 The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date $ - $ - (Some amounts may not reconcile due to rounding.)

Credit Facilities (Tables)

Credit Facilities (Tables)	12 Months Ended
	Dec. 31, 2016
Line of Credit Facility [Line Items]
Summary Of Costs Incurred Connection With Credit Facilities	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Credit facility fees incurred $ 793 $ 756 $ 659
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And/Or Borrowings	(Dollars in thousands) At December 31, 2016 At December 31, 2015 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Wells Fargo Bank Group Credit Facility Tranche One $ 200,000 $ - $ 200,000 $ - Tranche Two 600,000 - 600,000 2,488 12/12/2016 - 478,233 12/31/2017 - 447,178 12/31/2016 Total Wells Fargo Bank Group Credit Facility $ 800,000 $ 478,233 $ 800,000 $ 449,666
Citibank Bilateral Agreement [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And/Or Borrowings	(Dollars in thousands) At December 31, 2016 At December 31, 2015 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Citibank Bilateral Letter of Credit Agreement $ 200,000 $ 4,058 2/28/2017 $ 300,000 $ 3,672 11/24/2016 3,672 11/24/2017 67,783 12/31/2016 69,404 12/31/2017 179 8/30/2017 269 8/30/2018 316 12/31/2017 1,163 12/31/2018 - 93,180 12/30/2020 99,521 12/31/2019 Total Citibank Bilateral Agreement $ 200,000 $ 171,746 $ 300,000 $ 171,471
Lloyd's of London Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Summary Of Outstanding Letters Of Credit And/Or Borrowings	(Dollars in thousands) At December 31, 2016 At December 31, 2015 Bank Commitment In Use Date of Expiry Commitment In Use Date of Expiry Lloyd's Bank plc £ 140,000 £ 130,606 12/31/2019 £ 175,000 £ 164,961 12/31/2019 - - - - Total Lloyd's Bank Credit Facility £ 140,000 £ 130,606 £ 175,000 £ 164,961

Senior Notes (Tables)

Senior Notes (Tables)	12 Months Ended
	Dec. 31, 2016
Senior Notes [Abstract]
Schedule Of Outstanding Senior Notes	December 31, 2016 December 31, 2015 Consolidated Balance Consolidated Balance (Dollars in thousands) Date Issued Date Due Principal Amounts Sheet Amount Market Value Sheet Amount Market Value 4.868 06/05/2014 06/01/2044 400,000 $ 396,714 $ 383,612 $ 396,594 $ 381,204 5.40% Senior notes 10/12/2004 10/15/2014 250,000 - - - -
Schedule Of Interest Expense Incurred In Connection With Senior Notes	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Interest expense incurred $ 19,472 $ 19,472 $ 21,818

Long Term Subordinated Notes (T

Long Term Subordinated Notes (Tables)	12 Months Ended
	Dec. 31, 2016
Long Term Subordinated Notes [Abstract]
Schedule Of Outstanding Fixed To Floating Rate Long Term Subordinated Notes	Maturity Date December 31, 2016 December 31, 2015 Original Consolidated Balance Consolidated Balance (Dollars in thousands) Date Issued Principal Amount Scheduled Final Sheet Amount Market Value Sheet Amount Market Value 6.6 04/26/2007 $ 400,000 05/15/2037 05/01/2067 $ 236,462 $ 204,636 $ 236,364 $ 208,978
Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Interest expense incurred $ 15,749 $ 15,749 $ 15,749

Collateralized Reinsurance An40

Collateralized Reinsurance And Trust Agreements (Tables)	12 Months Ended
	Dec. 31, 2016
Collateralized Reinsurance And Trust Agreements [Abstract]
Premiums And Losses Ceded By The Company To Affiliate	Years Ended December 31, Mt. Logan Re Segregated Accounts 2016 2015 2014 (Dollars in thousands) Ceded written premiums 197,537 234,001 138,362 Ceded earned premiums 191,568 226,385 139,317 Ceded losses and LAE 44,802 40,807 30,598 Assumed written premiums 14,563 15,421 13,889 Assumed earned premiums 14,563 15,421 13,889 Assumed losses and LAE - - -

Operating Lease Agreements (Tab

Operating Lease Agreements (Tables)	12 Months Ended
	Dec. 31, 2016
Operating Lease Agreements [Abstract]
Future Minimum Rental Commitments	(Dollars in thousands) 2017 $ 14,818 2018 15,302 2019 15,801 2020 15,170 2021 6,307 Thereafter 23,769 Net commitments $ 91,168 (Some amounts may not reconcile due to rounding.)

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Taxes [Abstract]
Components Of The Provision	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Current tax expense (benefit): U.S. $ 30,971 $ 90,486 $ 143,297 Non-U.S. 4,228 14,811 22,575 Total current tax expense (benefit) 35,199 105,297 165,872 Deferred tax expense (benefit): U.S. 70,995 28,724 21,780 Non-U.S. (2,694 ) - - Total deferred tax expense (benefit) 68,301 28,724 21,780 Total income tax expense (benefit) $ 103,500 $ 134,021 $ 187,652 (Some amounts may not reconcile due to rounding.)
Reconciliation Of The Difference Between The Provision For Income Taxes And The Expected Tax Provision At The Weighted Average Tax Rate	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 U.S. Non-U.S. U.S. Non-U.S. U.S. Non-U.S. Underwriting gain (loss) $ 208,821 $ 480,602 $ 294,386 $ 493,025 $ 228,194 $ 585,327 Net investment income 230,691 242,393 234,709 238,763 260,501 269,985 Net realized capital gains (losses) (16,465 ) 9,249 (159,268 ) (24,879 ) 78,006 6,040 Net derivative gain (loss) - 18,647 - 6,317 - (11,599 ) Corporate expenses (8,276 ) (18,955 ) (7,179 ) (16,075 ) (7,252 ) (16,169 ) Interest, fee and bond issue cost amortization expense (35,435 ) (793 ) (35,434 ) (756 ) (37,970 ) (563 ) Other income (expense) (5,536 ) (5,101 ) 27,706 60,574 (1,561 ) 38,869 Pre-tax income (loss) $ 373,801 $ 726,043 $ 354,920 $ 756,970 $ 519,918 $ 866,890 Expected tax provision at the applicable statutory rate(s) 130,830 2,387 124,221 14,848 181,972 21,279 Increase (decrease) in taxes resulting from: Tax exempt income (9,078 ) - (10,004 ) - (12,231 ) - Dividend received deduction (4,913 ) - (5,364 ) - (5,910 ) - Proration 1,931 - 2,160 - 1,835 - Tax audit settlement (18,644 ) - - - - - Other 1,840 (853 ) 8,197 (37 ) (588 ) 1,296 Total income tax provision $ 101,966 $ 1,534 $ 119,210 $ 14,811 $ 165,077 $ 22,575 (Some amounts may not reconcile due to rounding.)
Net Deferred Income Tax Assets	Years Ended December 31, (Dollars in thousands) 2016 2015 Deferred tax assets: Loss reserves $ 104,547 $ 169,771 Unearned premium reserves 37,573 40,624 Net unrealized losses on benefit plans 35,271 33,971 Unrealized foreign currency losses 27,410 - Benefit plan liability 14,576 18,747 Net operating loss carryforward 6,341 3,412 Uncollectible reinsurance reserves 5,534 5,534 Investment impairments 3,093 23,481 Deferred expenses 2,884 3,182 Foreign tax credits - 11,836 Alternative minimum tax credits - 7,604 Other assets 14,843 16,347 Total deferred tax assets 252,071 334,509 Deferred tax liabilities: Net fair value income 78,740 80,268 Deferred acquisition costs 26,652 33,227 Net unrealized investment gains 20,698 7,491 Partnership investments 11,912 6,006 Gain on tender of debt 10,958 16,437 Unrealized foreign currency gains - 3,778 Other liabilities 3,086 5,860 Total deferred tax liabilities 152,045 153,067 Net deferred tax assets 100,026 181,442 Less: Valuation allowance (3,846 ) (3,412 ) Total net deferred tax assets $ 96,181 $ 178,030 (Some amounts may not reconcile due to rounding.)

Reinsurance (Tables)

Reinsurance (Tables)	12 Months Ended
	Dec. 31, 2016
Reinsurance [Abstract]
Premiums Written And Earned And Incurred Losses And LAE	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Written premiums: Direct $ 1,819,588 $ 1,569,791 $ 1,227,645 Assumed 4,214,286 4,321,922 4,535,231 Ceded (762,969 ) (709,402 ) (630,446 ) Net written premiums $ 5,270,905 $ 5,182,311 $ 5,132,430 Premiums earned: Direct $ 1,694,702 $ 1,491,163 $ 1,183,498 Assumed 4,361,944 4,500,526 4,419,322 Ceded (736,180 ) (698,847 ) (559,113 ) Net premiums earned $ 5,320,466 $ 5,292,842 $ 5,043,707 Incurred losses and LAE: Direct $ 1,496,455 $ 1,268,896 $ 1,100,037 Assumed 2,121,902 2,152,633 2,160,663 Ceded (478,728 ) (356,814 ) (384,764 ) Net incurred losses and LAE $ 3,139,629 $ 3,064,715 $ 2,875,936

Comprehensive Income (Loss) (Ta

Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2016
Comprehensive Income (Loss) [Abstract]
Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations	Years Ended December 31, 2016 2015 2014 (Dollars in thousands) Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Before Tax Tax Effect Net of Tax Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary $ 65,645 $ (13,961 ) $ 51,684 $ (333,657 ) $ 54,502 $ (279,155 ) $ (4,278 ) $ 11,653 $ 7,375 URA(D) on securities - OTTI 7,734 (1,789 ) 5,945 8,411 (3,383 ) 5,028 (10,078 ) 3,407 (6,671 ) Reclassification of net realized losses (gains) included in net income (loss) 23,232 (8,114 ) 15,118 131,211 (37,523 ) 93,688 34,668 (13,276 ) 21,392 Foreign currency translation adjustments (53,802 ) (1,539 ) (55,341 ) (140,918 ) 29,388 (111,530 ) (111,145 ) 15,728 (95,417 ) Benefit plan actuarial net gain (loss) (11,520 ) 4,032 (7,488 ) 8,740 (3,059 ) 5,681 (60,169 ) 21,059 (39,110 ) Reclassification of benefit plan liability amortization included in net income (loss) 7,805 (2,732 ) 5,073 9,563 (3,347 ) 6,216 4,647 (1,627 ) 3,020 Total other comprehensive income (loss) $ 39,094 $ (24,103 ) $ 14,991 $ (316,650 ) $ 36,578 $ (280,072 ) $ (146,355 ) $ 36,944 $ (109,411 )
Reclassification From Accumulated Other Comprehensive Income	Years Ended December 31, Affected line item within the statements of AOCI component 2016 2015 operations and comprehensive income (loss) (Dollars in thousands) URA(D) on securities $ 23,232 $ 131,211 Other net realized capital gains (losses) (8,114 ) (37,523 ) Income tax expense (benefit) $ 15,118 $ 93,688 Net income (loss) Benefit plan net gain (loss) $ 7,805 $ 9,563 Other underwriting expenses (2,732 ) (3,347 ) Income tax expense (benefit) $ 5,073 $ 6,216 Net income (loss)
Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets	Years Ended December 31, (Dollars in thousands) 2016 2015 Beginning balance of URA (D) on securities $ 42,811 $ 223,250 Current period change in URA (D) of investments - temporary 66,802 (185,467 ) Current period change in URA (D) of investments - non-credit OTTI 5,945 5,028 Ending balance of URA (D) on securities 115,558 42,811 Beginning balance of foreign currency translation adjustments (211,477 ) (99,947 ) Current period change in foreign currency translation adjustments (55,341 ) (111,530 ) Ending balance of foreign currency translation adjustments (266,818 ) (211,477 ) Beginning balance of benefit plan net gain (loss) (63,089 ) (74,986 ) Current period change in benefit plan net gain (loss) (2,415 ) 11,897 Ending balance of benefit plan net gain (loss) (65,504 ) (63,089 ) Ending balance of accumulated other comprehensive income (loss) $ (216,764 ) $ (231,755 )

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]
Summary Of Contributions To Defined Benefit Pension Plans	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Company contributions $ 30,821 $ 5,949 $ 16,484
Summary Of Pension Expense	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Pension expense $ 17,188 $ 22,682 $ 18,543
Summary Of Accumulated Benefit Obligation	At December 31, (Dollars in thousands) 2016 2015 Qualified Plan $ 211,720 $ 188,702 Non-qualified Plan 21,123 17,756 Total $ 232,843 $ 206,458 (Some amounts may not reconcile due to rounding.)
Projected Benefit Obligations In Excess Of Plan Assets	At December 31, (Dollars in thousands) 2016 2015 Qualified Plan Projected benefit obligation $ 254,320 $ 229,719 Fair value of plan assets 171,506 135,087 Non-qualified Plan Projected benefit obligation $ 27,534 $ 24,303 Fair value of plan assets - -
Accumulated Benefit Obligations In Excess Of Plan Assets	At December 31, (Dollars in thousands) 2016 2015 Qualified Plan Accumulated benefit obligation $ 211,720 $ 188,702 Fair value of plan assets 171,506 135,087 Non-qualified Plan Accumulated benefit obligation $ 21,123 $ 17,756 Fair value of plan assets - -
Fair Value Measurements Using Significant Unobservable Inputs For Fixed Maturity Investments	Year Ended December 31, (Dollars in thousands) 2016 2015 Assets: Balance, beginning of period $ 10,673 $ 10,629 Actual return on plan assets: Realized gains (losses) relating to assets sold during the period 28 9 Unrealized gains (losses) relating to assets still held at the reporting date 517 12 Purchases and capital contributions - 161 Investment income earned on assets 189 - Sales and capital distributions (134 ) (138 ) Transfers in and/or (out) of Level 3 - - Balance, end of period $ 11,274 $ 10,673 The amount of total gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets still held at the reporting date $ 489 $ 3 (Some amounts may not reconcile due to rounding.)
Incurred Expenses Related To Defined Contribution Plans For U.S. Employees	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Incurred expenses $ 6,058 $ 5,468 $ 4,676
Incurred Expenses Related To Defined Contribution Plans For Non-U.S. Employees	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Incurred expenses $ 1,560 $ 1,423 $ 1,387
Changes In The Assumed Healthcare Cost Trend	Percentage Percentage Point Increase Point Decrease (Dollars in thousands) ($ Impact) ($ Impact) a. Effect on total service and interest cost components $ 541 $ (419 ) b. Effect on accumulated post-retirement benefit obligation 6,622 (5,158 )
Post-Retirement Benefit Expenses	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Post-retirement benefit expenses $ 2,293 $ 3,280 $ 3,196
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Summary Of Status Of Plan	Years Ended December 31, (Dollars in thousands) 2016 2015 Change in projected benefit obligation: Benefit obligation at beginning of year $ 254,022 $ 270,065 Service cost 10,924 12,511 Interest cost 9,485 10,759 Actuarial (gain)/loss 12,155 (18,595 ) Benefits paid (4,733 ) (20,718 ) Projected benefit obligation at end of year 281,853 254,022 Change in plan assets: Fair value of plan assets at beginning of year 135,087 157,090 Actual return on plan assets 10,331 (7,234 ) Actual contributions during the year 30,821 5,949 Benefits paid (4,733 ) (20,718 ) Fair value of plan assets at end of year 171,506 135,087 Funded status at end of year $ (110,348 ) $ (118,936 ) (Some amounts may not reconcile due to rounding.)
Amounts Recognized In The Consolidated Balance Sheets	At December 31, (Dollars in thousands) 2016 2015 Other assets (due beyond one year) $ - $ - Other liabilities (due within one year) (2,371 ) (1,869 ) Other liabilities (due beyond one year) (107,977 ) (117,067 ) Net amount recognized in the consolidated balance sheets $ (110,348 ) $ (118,936 )
Amounts Not Yet Reflected In Net Periodic Benefit Cost And Included In Accumulated Other Comprehensive Income (Loss)	At December 31, (Dollars in thousands) 2016 2015 Prior service cost $ - $ - Accumulated income (loss) (96,965 ) (91,920 ) Accumulated other comprehensive income (loss) $ (96,965 ) $ (91,920 ) (Some amounts may not reconcile due to rounding.)
Other Changes In Other Comprehensive Income (Loss)	Years Ended December 31, (Dollars in thousands) 2016 2015 Other comprehensive income (loss) at December 31, prior year $ (91,920 ) $ (102,692 ) Net gain (loss) arising during period (12,982 ) (259 ) Recognition of amortizations in net periodic benefit cost: Prior service cost - 21 Actuarial loss 7,937 11,011 Other comprehensive income (loss) at December 31, current year $ (96,965 ) $ (91,920 ) (Some amounts may not reconcile due to rounding.)
Net Periodic Benefit Cost For U.S. Employees	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Service cost $ 10,924 $ 12,511 $ 10,015 Interest cost 9,485 10,759 10,474 Expected return on assets (11,158 ) (11,620 ) (11,288 ) Amortization of actuarial loss from earlier periods 7,937 9,243 4,341 Amortization of unrecognized prior service cost - 21 49 Settlement - 1,768 4,953 Net periodic benefit cost $ 17,188 $ 22,682 $ 18,543 Other changes recognized in other comprehensive income (loss): Other comprehensive income (loss) attributable to change from prior year 5,045 (10,773 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 22,233 $ 11,909 (Some amounts may not reconcile due to rounding.)
Expected Benefit Payments	(Dollars in thousands) 2017 $ 7,926 2018 10,069 2019 12,993 2020 10,732 2021 12,936 Next 5 years 72,113
Fair Value Measurement Levels For Qualified Plan Assets	Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2016 (Level 1) (Level 2) (Level 3) Assets: Cash $ - $ - $ - $ - Short-term investments, which approximates fair value (a) 3,665 3,665 - - Mutual funds, fair value Fixed income (b) 21,445 21,445 - - Equities (c) 122,213 122,213 - - Multi-strategy equity fund, fair value (d) 11,274 - - 11,274 Total $ 158,597 $ 147,323 $ - $ 11,274 (Some amounts may not reconcile due to rounding.) (a) This category includes high quality, short-term money market instruments, which are issued and payable in U.S. dollars. (b) This category includes fixed income funds, which invest in investment grade securities of corporations, governments and government agencies with approximately 50% in U.S. securities and 50% in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities including common stocks, securities convertible into common stock and securities with common stock characteristics, such as rights and warrants, with approximately 90% in U.S. equities and 10% in international equities. (d) This category consists of a privately held fund of U.S. and international equity funds and may include currency hedges for the foreign funds. The fair value is provided by the external investment manager. Fair Value Measurement Using: Quoted Prices in Active Significant Markets for Other Significant Identical Observable Unobservable Assets Inputs Inputs (Dollars in thousands) December 31, 2015 (Level 1) (Level 2) (Level 3) Assets: Cash $ - $ - $ - $ - Short-term investments, which approximates fair value (a) 4,034 4,034 - - Mutual funds, fair value Fixed income (b) 22,537 22,537 - - Equities (c) 86,505 86,505 - - Multi-strategy equity fund, fair value (d) 10,673 - - 10,673 Total $ 123,749 $ 113,076 $ - $ 10,673 (Some amounts may not reconcile due to rounding.) (a) This category includes high quality, short-term money market instruments, which are issued and payable in U.S. dollars. (b) This category includes fixed income funds, which invest in investment grade securities of corporations, governments and government agencies with approximately 50% in U.S. securities and 50% in international securities. (c) This category includes funds, which invest in small, mid and multi-cap equity securities including common stocks, securities convertible into common stock and securities with common stock characteristics, such as rights and warrants, with approximately 90% in U.S. equities and 10% in international equities. (d) This category consists of a privately held fund of U.S. and international equity funds and may include currency hedges for the foreign funds. The fair value is provided by the external investment manager.
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Summary Of Status Of Plan	At December 31, (Dollars in thousands) 2016 2015 Change in projected benefit obligation: Benefit obligation at beginning of year $ 31,687 $ 36,506 Service cost 1,418 1,794 Interest cost 1,007 1,187 Amendments (794 ) - Actuarial (gain)/loss (668 ) (7,231 ) Benefits paid (579 ) (568 ) Benefit obligation at end of year 32,071 31,687 Change in plan assets: Fair value of plan assets at beginning of year - - Employer contributions 579 568 Benefits paid (579 ) (568 ) Fair value of plan assets at end of year - - Funded status at end of year $ (32,071 ) $ (31,687 )
Amounts Recognized In The Consolidated Balance Sheets	At December 31, (Dollars in thousands) 2016 2015 Other liabilities (due within one year) $ (614 ) $ (654 ) Other liabilities (due beyond one year) (31,457 ) (31,033 ) Net amount recognized in the consolidated balance sheets $ (32,071 ) $ (31,687 ) (Some amounts may not reconcile due to rounding.)
Amounts Not Yet Reflected In Net Periodic Benefit Cost And Included In Accumulated Other Comprehensive Income (Loss)	At December 31, (Dollars in thousands) 2016 2015 Accumulated income (loss) $ (4,471 ) $ (5,139 ) Accumulated prior service credit (cost) 662 $ - Accumulated other comprehensive income (loss) $ (3,809 ) $ (5,139 )
Other Changes In Other Comprehensive Income (Loss)	Years Ended December 31, (Dollars in thousands) 2016 2015 Other comprehensive income (loss) at December 31, prior year $ (5,139 ) $ (12,670 ) Net gain (loss) arising during period 668 7,231 Prior Service credit (cost) arising during period 794 - Recognition of amortizations in net periodic benefit cost: Actuarial loss (gain) - 300 Prior service cost (132 ) - Other comprehensive income (loss) at December 31, current year $ (3,809 ) $ (5,139 )
Net Periodic Benefit Cost For U.S. Employees	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Service cost $ 1,418 $ 1,794 $ 1,619 Interest cost 1,007 1,187 1,320 Net loss recognition (132 ) 300 257 Net periodic cost $ 2,293 $ 3,280 $ 3,196 Other changes recognized in other comprehensive income (loss): Other comprehensive gain (loss) attributable to change from prior year (1,330 ) (7,531 ) Total recognized in net periodic benefit cost and other comprehensive income (loss) $ 963 $ (4,251 ) (Some amounts may not reconcile due to rounding.)
Expected Benefit Payments	(Dollars in thousands) 2017 $ 614 2018 706 2019 824 2020 951 2021 1,071 Next 5 years 7,804

Dividend Restrictions And Sta46

Dividend Restrictions And Statutory Financial Information (Tables)	12 Months Ended
	Dec. 31, 2016
Dividend Restrictions And Statutory Financial Information [Abstract]
Regulatory Targeted Capital And The Actual Statutory Capital	Bermuda Re (1) Everest Re (2) At December 31, At December 31, (Dollars in thousands) 2016 (3) 2015 (3) 2016 2015 Regulatory targeted capital $ - $ 2,079,005 $ 1,411,440 $ 1,355,668 Actual capital $ 2,702,624 $ 2,632,411 $ 3,635,121 $ 3,210,891 (1) (2) (3)

Commitments And Contingencies (

Commitments And Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments And Contingencies [Abstract]
Summary Of Estimated Cost To Replace Annuities For Contingent Liability	At December 31, (Dollars in thousands) 2016 2015 The Prudential Insurance Company of America $ 146,507 $ 142,427 Unaffiliated life insurance company $ 33,860 $ 33,062

Share-Based Compensation Plans

Share-Based Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Share-Based Compensation Plans [Abstract]
Company's Shareholder Approved Plans	Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in thousands) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2016 648,034 $ 85.61 Granted 0 0 Exercised 0 0 Forfeited/Cancelled/Expired 0 0 Outstanding at December 31, 2016 648,034 0 0.0 $ 0 Exercisable at December 31, 2016 0 0 0.0 $ 0 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in thousands) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2015 888,184 $ 86.05 Granted - 0 Exercised 230,350 87.21 Forfeited/Cancelled/Expired 9,800 87.68 Outstanding at December 31, 2015 648,034 85.61 4.5 $ 64,352 Exercisable at December 31, 2015 495,334 84.94 4.1 $ 49,517 Weighted- Weighted- Average Average Remaining Aggregate (Aggregate Intrinsic Value in thousands) Exercise Contractual Intrinsic Options Shares Price/Share Term Value Outstanding at January 1, 2014 1,190,544 $ 85.44 Granted 0 0 Exercised 286,120 83.53 Forfeited/Cancelled/Expired 16,240 85.73 Outstanding at December 31, 2014 888,184 86.05 5.2 $ 76,485 Exercisable at December 31, 2014 562,684 85.41 4.5 $ 48,812
Share Options Outstanding And Exercisable	At December 31, 2016 Options Outstanding Options Exercisable Weighted- Average Weighted- Weighted- Number Remaining Average Number Average Range of Outstanding Contractual Exercise Exercisable Exercise Exercise Prices at 12/31/16 Life Price at 12/31/16 Price $ 71.7150 78.1700 90,880 2.1 $ 71.72 90,880 $ 71.72 $ 78.1800 85.6300 71,510 3.1 84.63 71,510 84.63 $ 85.6400 87.4700 109,240 4.1 86.62 109,240 86.62 $ 87.4800 110.1300 183,364 4.4 90.46 139,064 91.14 454,994 3.7 84.88 410,694 84.50
Summary Of Company's Non-Vested Shares And Changes	Years Ended December 31, 2016 2015 2014 Weighted- Weighted- Weighted- Average Average Average Grant Date Grant Date Grant Date Restricted (non-vested) Shares Shares Fair Value Shares Fair Value Shares Fair Value Outstanding at January 1, 435,336 $ 143.02 467,745 $ 120.84 429,041 $ 103.50 Granted 173,546 186.37 156,262 178.80 176,159 147.44 Vested 145,834 130.54 154,387 113.12 128,549 99.55 Forfeited 27,710 147.32 34,284 138.19 8,906 118.82 Outstanding at December 31, 435,338 164.21 435,336 143.02 467,745 120.84
Company's Non-Vested Performance Share Unit Awards	Year Ended December 31, 2016 2015 Weighted- Weighted- Average Average Grant Date Grant Date Performance Share Unit Awards Shares Fair Value Shares Fair Value Outstanding at January 1, 10,705 $ 178.84 - $ - Granted 11,130 186.02 10,705 178.84 Vested - - - - Forfeited - - - - Outstanding at December 31, 21,835 182.50 10,705 178.84

Segment Reporting (Tables)

Segment Reporting (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Schedule Of Underwriting Results For Operating Segments	U.S. Reinsurance Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 2,125,792 $ 2,147,892 $ 2,154,530 Net written premiums 1,970,575 1,855,853 1,983,800 Premiums earned $ 2,072,155 $ 1,952,680 $ 1,986,769 Incurred losses and LAE 1,068,475 825,081 954,525 Commission and brokerage 465,953 493,261 466,291 Other underwriting expenses 54,107 50,087 45,583 Underwriting gain (loss) $ 483,620 $ 584,251 $ 520,370 International Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 1,230,683 $ 1,334,206 $ 1,603,566 Net written premiums 1,082,712 1,208,978 1,336,633 Premiums earned $ 1,119,121 $ 1,251,111 $ 1,310,903 Incurred losses and LAE 486,550 749,891 748,174 Commission and brokerage 283,447 298,180 306,229 Other underwriting expenses 35,512 34,303 34,598 Underwriting gain (loss) $ 313,612 $ 168,737 $ 221,902 Bermuda Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 890,375 $ 877,328 $ 786,408 Net written premiums 831,931 791,594 744,664 Premiums earned $ 837,964 $ 822,391 $ 715,736 Incurred losses and LAE 461,909 456,448 361,792 Commission and brokerage 233,989 215,992 198,848 Other underwriting expenses 36,331 36,017 34,923 Underwriting gain (loss) $ 105,735 $ 113,934 $ 120,173 Insurance Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Gross written premiums $ 1,787,024 $ 1,532,287 $ 1,218,372 Net written premiums 1,385,687 1,325,886 1,067,333 Premiums earned $ 1,291,226 $ 1,266,660 $ 1,030,299 Incurred losses and LAE 1,122,695 1,033,295 811,445 Commission and brokerage 205,303 176,213 149,777 Other underwriting expenses 176,772 136,661 118,001 Underwriting gain (loss) $ (213,544 ) $ (79,509 ) $ (48,924 )
Schedule Of Underwriting Results For Operating Segments To Income (Loss) Before Taxes	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 Underwriting gain (loss) $ 689,423 $ 787,412 $ 813,522 Net investment income 473,085 473,473 530,485 Net realized capital gains (losses) (7,216 ) (184,147 ) 84,046 Net derivative gain (loss) 18,647 6,317 (11,599 ) Corporate expenses (27,231 ) (23,254 ) (23,421 ) Interest, fee and bond issue cost amortization expense (36,228 ) (36,191 ) (38,533 ) Other income (expense) (10,636 ) 88,280 32,308 Income (loss) before taxes $ 1,099,844 $ 1,111,890 $ 1,386,808
Schedule Of Gross Written Premiums Derived From Largest Non-U.S. Market	Years Ended December 31, (Dollars in thousands) 2016 2015 2014 United Kingdom $ 688,598 $ 740,763 $ 676,490

Unaudited Quarterly Financial50

Unaudited Quarterly Financial Data (Tables)	12 Months Ended
	Dec. 31, 2016
Unaudited Quarterly Financial Data [Abstract]
Summary Of Quarterly Financial Data	2016 (Dollars in thousands, except per share amounts) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Operating data: Gross written premiums $ 1,353,189 $ 1,363,351 $ 1,782,616 $ 1,534,719 Net written premiums 1,181,457 1,154,953 1,564,644 1,369,851 Premiums earned 1,218,867 1,288,860 1,371,474 1,441,265 Net investment income 102,524 132,737 122,657 115,167 Net realized capital gains (losses) (74,259 ) 32,658 380 34,005 Total claims and underwriting expenses 1,047,865 1,225,395 1,174,276 1,183,507 Net income (loss) 171,686 155,692 295,394 373,572 Earnings per common share attributable to Everest Re Group: Basic $ 4.03 $ 3.70 $ 7.11 $ 9.14 Diluted $ 4.00 $ 3.67 $ 7.06 $ 9.08 2015 (Dollars in thousands, except per share amounts) 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter Operating data: Gross written premiums $ 1,418,025 $ 1,261,660 $ 1,724,943 $ 1,487,085 Net written premiums 1,224,289 1,135,718 1,500,355 1,321,949 Premiums earned 1,272,488 1,285,255 1,362,864 1,372,235 Net investment income 122,566 124,990 115,403 110,514 Net realized capital gains (losses) (10,505 ) (24,178 ) (159,971 ) 10,507 Total claims and underwriting expenses 1,056,990 1,130,606 1,234,785 1,083,049 Net income (loss) 322,978 209,057 88,553 357,281 Earnings per common share attributable to Everest Re Group: Basic $ 7.26 $ 4.72 $ 2.02 $ 8.32 Diluted $ 7.19 $ 4.68 $ 2.00 $ 8.26

Summary Of Significant Accoun51

Summary Of Significant Accounting Policies (Narrative) (Details) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)segmentitemshares	Dec. 31, 2015USD ($)shares	Dec. 31, 2014USD ($)shares
Summary Of Significant Accounting Policies [Line Items]
Minimum percent of prepaid reinsurance premiums for any foreign reinsurers that were collateralized	10.00%
Number of Operating Segments | segment	4
Equity index put option contracts sold | item	7
Derivatives, number of indices | item	2
Deferred acquisition costs | $	$ 344,052	$ 372,351
Supplementary Insurance Information, Amortization of Deferred Policy Acquisition Costs | $	$ 1,188,692	$ 1,183,646	$ 1,121,145
Anti-dilutive options | shares	0	0	0
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Options expiration date	Feb. 21, 2017
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Options expiration date	Sep. 19, 2022

Summary Of Significant Accoun52

Summary Of Significant Accounting Policies (Schedule Of Uncollectible Reinsurance Recoverable And Premium Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary Of Significant Accounting Policies [Abstract]
Reinsurance receivables and premium receivables	$ 23,360	$ 22,878

Summary Of Significant Accoun53

Summary Of Significant Accounting Policies (Schedule Of Deferred Acquisition Costs Amortized To Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Deferred acquisition costs	$ 1,188,692	$ 1,183,646	$ 1,121,145

Summary Of Significant Accoun54

Summary Of Significant Accounting Policies (Net Income (Loss) Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary Of Significant Accounting Policies [Abstract]
Net income (loss)	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	$ 996,344	$ 977,869	$ 1,199,156
Less: dividends declared-common shares and nonvested common shares									(195,384)	(175,107)	(145,913)
Undistributed earnings									$ 800,960	$ 802,762	$ 1,053,243
Percentage allocated to common shareholders									98.90%	98.90%	99.00%
Net income (loss) available to common stockholders, total									$ 792,415	$ 794,309	$ 1,042,423
Add: dividends declared-common shareholders									193,413	173,367	144,447
Numerator for basic and diluted earnings per common share									$ 985,829	$ 967,676	$ 1,186,870
Denominator for basic earnings per weighted-average common shares									41,329	43,415	45,377
Effect of dilutive securities: Options									300	380	425
Denominator for diluted earnings per adjusted weighted-average common shares									41,628	43,795	45,802
Basic	$ 9.14	$ 7.11	$ 3.70	$ 4.03	$ 8.32	$ 2.02	$ 4.72	$ 7.26	$ 23.85	$ 22.29	$ 26.16
Diluted	$ 9.08	$ 7.06	$ 3.67	$ 4	$ 8.26	$ 2	$ 4.68	$ 7.19	$ 23.68	$ 22.10	$ 25.91
Basic weighted-average common shares outstanding									41,329	43,415	45,377
Basic weighted-average common shares outstanding and nonvested common shares expected to vest									41,774	43,877	45,848

Summary Of Significant Accoun55

Summary Of Significant Accounting Policies (Fair Value Of The Equity Index Put Options) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Option Indexed to Issuer's Equity [Line Items]
Equity index put option liability	$ 22,059	$ 40,705
Equity Index Put Option Contracts [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Option Indexed to Issuer's Equity [Line Items]
Equity index put option liability	$ 22,059	$ 40,705

Summary Of Significant Accoun56

Summary Of Significant Accounting Policies (Changes In Fair Value Of The Equity Index Put Option Contracts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Option Indexed to Issuer's Equity [Line Items]
Net derivative gain (loss)	$ 18,647	$ 6,317	$ (11,599)
Derivatives Not Designated As Hedging Instruments [Member] | Equity Index Put Option Contracts [Member]
Option Indexed to Issuer's Equity [Line Items]
Net derivative gain (loss)	$ 18,647	$ 6,317	$ (11,599)

Summary Of Signigicant Accounti

Summary Of Signigicant Accounting Policies (Schedule of Effect of Newly Adopted Accounting Policies, Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
ASSETS:
Short-term investments	$ 431,478	$ 799,684
Total investments and cash	17,483,089	16,676,405
Premiums receivable	1,485,990	1,483,090
Reinsurance receivables	1,018,325	894,037
Deferred acquisition costs	344,052	372,351
Prepaid reinsurance premiums	191,768	164,971
Other assets	263,459	316,408
TOTAL ASSETS	21,321,504	20,545,418
LIABILITIES:
Funds held under reinsurance treaties	21,278	13,544
Commission reserves	70,335	60,098
Other net payable to reinsurers	190,986	173,087
Other liabilities	264,770	261,322
Total liabilities	13,246,108	12,936,833
NONCONTROLLING INTERESTS:
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY	21,321,504	20,545,418
New Accounting Pronouncements Early Adoption Effect [Member]
ASSETS:
Short-term investments		799,684
Total investments and cash		16,676,405
Premiums receivable		1,483,090
Reinsurance receivables		894,037
Deferred acquisition costs		372,351
Prepaid reinsurance premiums		164,971
Other assets		321,818
TOTAL ASSETS		20,550,828
LIABILITIES:
Funds held under reinsurance treaties		13,544
Commission reserves		60,098
Other net payable to reinsurers		173,087
Other liabilities		261,322
Total liabilities		12,942,243
NONCONTROLLING INTERESTS:
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY		20,550,828
New Accounting Pronouncements Early Adoption Effect [Member] | As Previously Reported [Member]
ASSETS:
Short-term investments		1,795,455
Total investments and cash		17,672,176
Premiums receivable		1,479,293
Reinsurance receivables		840,420
Deferred acquisition costs		373,072
Prepaid reinsurance premiums		157,424
Other assets		265,634
TOTAL ASSETS		21,426,175
LIABILITIES:
Funds held under reinsurance treaties		88,544
Commission reserves		79,849
Other net payable to reinsurers		166,822
Other liabilities		291,322
Total liabilities		13,060,729
NONCONTROLLING INTERESTS:
Redeemable noncontrolling interest - Mt. Logan Re		756,861
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY		21,426,175
New Accounting Pronouncements Early Adoption Effect [Member] | Effect Of Adoption Of New Accounting Policy [Member]
ASSETS:
Short-term investments		(995,771)
Total investments and cash		(995,771)
Premiums receivable		3,797
Reinsurance receivables		53,617
Deferred acquisition costs		(721)
Prepaid reinsurance premiums		7,547
Other assets		56,184
TOTAL ASSETS		(875,347)
LIABILITIES:
Funds held under reinsurance treaties		(75,000)
Commission reserves		(19,751)
Other net payable to reinsurers		6,265
Other liabilities		(30,000)
Total liabilities		(118,486)
NONCONTROLLING INTERESTS:
Redeemable noncontrolling interest - Mt. Logan Re		(756,861)
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY		(875,347)
Parent Company [Member]
ASSETS:
Short-term investments		18,288
Other assets	60,603	56,314
TOTAL ASSETS	8,331,360	7,860,299
LIABILITIES:
Other liabilities	4,944	646
Total liabilities	255,964	251,714
NONCONTROLLING INTERESTS:
TOTAL LIABILITIES, NONCONTROLLING INTERESTS AND SHAREHOLDERS' EQUITY	$ 8,331,360	$ 7,860,299

Summary Of Significant Accoun58

Summary Of Significant Accounting Policies (Schedule of Effect of Newly Adopted Accounting Policies, Operations and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
REVENUES:
Premiums earned	$ 1,441,265	$ 1,371,474	$ 1,288,860	$ 1,218,867	$ 1,372,235	$ 1,362,864	$ 1,285,255	$ 1,272,488	$ 5,320,466	$ 5,292,842	$ 5,043,707
Net investment income	115,167	122,657	132,737	102,524	110,514	115,403	124,990	122,566	473,085	473,473	530,485
Other income (expense)									(10,636)	88,280	32,308
Total revenues									5,794,346	5,676,765	5,678,947
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses									3,139,629	3,064,715	2,875,936
Commission, brokerage, taxes and fees									1,188,692	1,183,646	1,121,145
Other underwriting expenses									302,722	257,069	233,104
Total claims and expenses	1,183,507	1,174,276	1,225,395	1,047,865	1,083,049	1,234,785	1,130,606	1,056,990	4,694,502	4,564,875	4,292,139
INCOME (LOSS) BEFORE TAXES									1,099,844	1,111,890	1,386,808
NET INCOME (LOSS)	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	996,344	977,869	1,199,156
Parent Company [Member]
REVENUES:
Net investment income									879	3,895	824
Other income (expense)									5,022	7,809	5,568
Total revenues									1,018,360	998,109	1,214,599
CLAIMS AND EXPENSES:
Total claims and expenses									22,016	20,240	15,443
INCOME (LOSS) BEFORE TAXES									996,344	977,869	1,199,156
NET INCOME (LOSS)									$ 996,344	977,869	1,199,156
New Accounting Pronouncements Early Adoption Effect [Member]
REVENUES:
Premiums earned										5,292,842	5,043,707
Net investment income										473,473	530,485
Other income (expense)										88,280	32,308
Total revenues										5,676,765	5,678,947
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses										3,064,715	2,875,936
Commission, brokerage, taxes and fees										1,183,646	1,121,145
Other underwriting expenses										257,069	233,104
Total claims and expenses										4,564,875	4,292,139
INCOME (LOSS) BEFORE TAXES										1,111,890	1,386,808
NET INCOME (LOSS)										977,869	1,199,156
New Accounting Pronouncements Early Adoption Effect [Member] | As Previously Reported [Member]
REVENUES:
Premiums earned										5,481,459	5,169,135
Net investment income										473,825	530,570
Other income (expense)										60,435	18,437
Total revenues										5,837,889	5,790,589
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses										3,101,915	2,906,534
Commission, brokerage, taxes and fees										1,202,036	1,135,586
Other underwriting expenses										265,984	240,400
Total claims and expenses										4,629,380	4,344,474
INCOME (LOSS) BEFORE TAXES										1,208,509	1,446,115
NET INCOME (LOSS)										1,074,488	1,258,463
Net Income (Loss) Attributable to Noncontrolling Interest										(96,619)	(59,307)
NET INCOME (LOSS) ATTRIBUTABLE TO EVEREST RE GROUP										977,869	1,199,156
New Accounting Pronouncements Early Adoption Effect [Member] | Effect Of Adoption Of New Accounting Policy [Member]
REVENUES:
Premiums earned										(188,617)	(125,428)
Net investment income										(352)	(85)
Other income (expense)										27,845	13,871
Total revenues										(161,124)	(111,642)
CLAIMS AND EXPENSES:
Incurred losses and loss adjustment expenses										(37,200)	(30,598)
Commission, brokerage, taxes and fees										(18,390)	(14,441)
Other underwriting expenses										(8,915)	(7,296)
Total claims and expenses										(64,505)	(52,335)
INCOME (LOSS) BEFORE TAXES										(96,619)	(59,307)
NET INCOME (LOSS)										(96,619)	(59,307)
Net Income (Loss) Attributable to Noncontrolling Interest										96,619	59,307
NET INCOME (LOSS) ATTRIBUTABLE TO EVEREST RE GROUP										$ (977,869)	$ (1,199,156)

Summary Of Significant Accoun59

Summary Of Significant Accounting Policies (Schedule of Effect of Newly Adopted Accounting Policies, Cash Flow) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	$ 996,344	$ 977,869	$ 1,199,156
Decrease (increase) in premiums receivable									(15,655)	(98,211)	48,371
Decrease (increase) in funds held by reinsureds, net									22,219	(43,775)	(1,835)
Decrease (increase) in reinsurance receivables									(202,950)	(265,103)	(210,648)
Decrease (increase) in prepaid reinsurance premiums									(32,455)	(21,819)	(78,130)
Increase (decrease) in other net payable to reinsurers									26,200	43,727	28,308
Change in other assets and liabilities, net									(56,204)	(8,934)	(142,635)
Net cash provided by (used in) operating activities									1,373,005	1,096,634	1,054,762
CASH FLOWS FROM INVESTING ACTIVITIES:
Net change in short-term investments									368,977	341,733	(76,483)
Net cash provided by (used in) investing activities									(657,873)	(681,101)	(758,572)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by (used in) financing activities									(570,921)	(561,569)	(478,098)
EFFECT OF EXCHANGE RATE CHANGES ON CASH									54,053	(7,780)	8,000
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)									996,344	977,869	1,199,156
Change in other assets and liabilities, net									66	(7,626)	14,470
Net cash provided by (used in) operating activities									676,000	577,043	694,883
CASH FLOWS FROM INVESTING ACTIVITIES:
Net change in short-term investments									18,288	279,462	(269,307)
Net cash provided by (used in) investing activities									(127,895)	(35,497)	(338,399)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by (used in) financing activities									(546,811)	(542,204)	(358,729)
EFFECT OF EXCHANGE RATE CHANGES ON CASH
New Accounting Pronouncements Early Adoption Effect [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)										977,869	1,199,156
Decrease (increase) in premiums receivable										(98,211)	48,371
Decrease (increase) in funds held by reinsureds, net										(43,775)	(1,835)
Decrease (increase) in reinsurance receivables										(265,103)	(210,648)
Decrease (increase) in prepaid reinsurance premiums										(21,819)	(78,130)
Increase (decrease) in other net payable to reinsurers										43,727	28,308
Change in other assets and liabilities, net										(8,934)	(142,635)
Net cash provided by (used in) operating activities										1,096,634	1,054,762
CASH FLOWS FROM INVESTING ACTIVITIES:
Net change in short-term investments										341,733	(76,483)
Net cash provided by (used in) investing activities										(681,101)	(758,572)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net cash provided by (used in) financing activities										(561,569)	(478,098)
EFFECT OF EXCHANGE RATE CHANGES ON CASH										(7,780)	8,000
New Accounting Pronouncements Early Adoption Effect [Member] | As Previously Reported [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)										1,074,488	1,258,463
Decrease (increase) in premiums receivable										(93,837)	45,282
Decrease (increase) in funds held by reinsureds, net										31,225	(1,835)
Decrease (increase) in reinsurance receivables										(240,414)	(186,014)
Decrease (increase) in prepaid reinsurance premiums										(14,486)	(79,086)
Increase (decrease) in other net payable to reinsurers										38,262	29,410
Change in other assets and liabilities, net										264	35,419
Net cash provided by (used in) operating activities										1,308,382	1,313,821
CASH FLOWS FROM INVESTING ACTIVITIES:
Net change in short-term investments										(98,903)	(497,983)
Net cash provided by (used in) investing activities										(1,121,737)	(1,180,072)
CASH FLOWS FROM FINANCING ACTIVITIES:
Third party investment in redeemable noncontrolling interest										266,848	136,200
Subscription Advances For Third Party Redeemable Noncontrolling Interest										30,000	40,000
Dividends paid on third party investment in redeemable noncontrolling interest										(68,158)	(10,334)
Net cash provided by (used in) financing activities										(332,879)	(312,232)
EFFECT OF EXCHANGE RATE CHANGES ON CASH										(7,582)	4,575
New Accounting Pronouncements Early Adoption Effect [Member] | Effect Of Adoption Of New Accounting Policy [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)										(96,619)	(59,307)
Decrease (increase) in premiums receivable										(4,374)	3,089
Decrease (increase) in funds held by reinsureds, net										(75,000)
Decrease (increase) in reinsurance receivables										(24,689)	(24,634)
Decrease (increase) in prepaid reinsurance premiums										(7,333)	956
Increase (decrease) in other net payable to reinsurers										5,465	(1,102)
Change in other assets and liabilities, net										(9,198)	(178,054)
Net cash provided by (used in) operating activities										(211,748)	(259,059)
CASH FLOWS FROM INVESTING ACTIVITIES:
Net change in short-term investments										440,636	421,500
Net cash provided by (used in) investing activities										440,636	421,500
CASH FLOWS FROM FINANCING ACTIVITIES:
Third party investment in redeemable noncontrolling interest										(266,848)	(136,200)
Subscription Advances For Third Party Redeemable Noncontrolling Interest										(30,000)	(40,000)
Dividends paid on third party investment in redeemable noncontrolling interest										68,158	10,334
Net cash provided by (used in) financing activities										(228,690)	(165,866)
EFFECT OF EXCHANGE RATE CHANGES ON CASH										$ (198)	$ 3,425

Investments (Narrative) (Detail

Investments (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Percentage threshold that triggers a review of available for sale debt securities for declines in market value	80.00%
Aggregate market value of investments in unrealized loss position	$ 6,211,700	$ 6,372,183
Gross unrealized losses on investments in unrealized loss position	220,621	272,692
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation	91,871	139,624
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation	128,750	133,068
Additional contractual commitments	507,244
Other invested assets	1,333,129	$ 786,994
Securities with a carrying value	$ 1,415,085
Sales Revenue, Net [Member]
Schedule of Available-for-sale Securities [Line Items]
Percentage threshold of unrealized losses not exceeded by any one single issuer	1.10%	0.70%
Minimum [Member]
Schedule of Available-for-sale Securities [Line Items]
Limited partnership financial reporting lag time, months	1 month
Maximum [Member]
Schedule of Available-for-sale Securities [Line Items]
Limited partnership financial reporting lag time, months	3 months
Parent Company [Member]
Schedule of Available-for-sale Securities [Line Items]
Other invested assets	$ 145,036
Investment Grade [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation	85,078
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Aggregate market value of investments in unrealized loss position	6,106,193	$ 6,280,276
Gross unrealized losses on investments in unrealized loss position	207,837	255,960
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation	91,871	139,624
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation	115,966	116,336
Energy Sector [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation		46,793
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation		18,447
Foreign Exchange Losses [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, duration of unrealized loss, less than 12 months, gross unrealized depreciation		39,037
Fixed maturity securities, duration of unrealized loss, greater than 12 months, gross unrealized depreciation	112,132	72,738
Sub-prime and Alt-A Loans [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross unrealized depreciation	0	$ 0
Private Placement Liquidity Sweep [Member]
Schedule of Available-for-sale Securities [Line Items]
Other invested assets	$ 378,862

Investments (Summary Of Unreali

Investments (Summary Of Unrealized Appreciation (Depreciation) Of Available For Sale, Fixed Maturity And Equity Security Investments) (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		$ 13,932,613	$ 13,276,206
Unrealized Appreciation		382,632	337,048
Unrealized Depreciation		(207,837)	(255,960)
Market Value		14,107,408	13,357,294
OTTI in AOCI	[1]	9,235	1,501
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,115,208	805,273
Unrealized Appreciation		20,410	13,465
Unrealized Depreciation		(5,303)	(1,861)
Market Value		1,130,315	816,877
Obligations Of U.S. States And Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		723,938	669,945
Unrealized Appreciation		18,016	34,020
Unrealized Depreciation		(11,970)	(890)
Market Value		729,984	703,075
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		5,059,388	4,817,014
Unrealized Appreciation		131,651	97,159
Unrealized Depreciation		(35,758)	(109,310)
Market Value		5,155,281	4,804,863
OTTI in AOCI	[1]	7,936	1,412
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		488,824	470,320
Unrealized Appreciation		1,110	719
Unrealized Depreciation		(1,286)	(3,813)
Market Value		488,648	467,226
Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		308,827	264,924
Unrealized Appreciation		1,983	4,750
Unrealized Depreciation		(3,878)	(3,375)
Market Value		306,932	266,299
Agency Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		2,415,901	2,313,265
Unrealized Appreciation		17,478	25,318
Unrealized Depreciation		(27,910)	(18,059)
Market Value		2,405,469	2,320,524
Non-Agency Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		642	893
Unrealized Appreciation		44	51
Unrealized Depreciation		(45)	(46)
Market Value		641	898
Foreign Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		1,254,175	1,256,983
Unrealized Appreciation		61,226	54,403
Unrealized Depreciation		(57,241)	(52,205)
Market Value		1,258,160	1,259,181
OTTI in AOCI	[1]	115	53
Foreign Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		2,565,710	2,677,589
Unrealized Appreciation		130,714	107,163
Unrealized Depreciation		(64,446)	(66,401)
Market Value		2,631,978	2,718,351
OTTI in AOCI	[1]	1,184	36
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		129,553	122,271
Unrealized Appreciation		2,298	3,401
Unrealized Depreciation		(12,784)	(16,732)
Market Value		$ 119,067	$ 108,940
[1]	Represents the amount of OTTI recognized in AOCI. Amount includes unrealized gains and losses on impaired securities relating to changes in the value of such securities subsequent to the impairment measurement date

Investments (Summary Of Amortiz

Investments (Summary Of Amortized Cost And Market Value Of Fixed Maturity Securities, By Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities - available for sale, Amortized Cost	$ 13,932,613	$ 13,276,206
Fixed maturity securities - available for sale, Market Value	14,107,408	13,357,294
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities - available for sale, Due in one year or less, Amortized Cost	956,945	1,021,200
Fixed maturity securities - available for sale, Due after one year through five years, Amortized Cost	6,769,585	6,193,426
Fixed maturity securities - available for sale, Due after five years through ten years, Amortized Cost	2,020,215	2,217,075
Fixed maturity securities - available for sale, Due after ten years, Amortized Cost	971,674	795,103
Fixed maturity securities - available for sale, Due in one year or less, Market Value	966,970	1,036,016
Fixed maturity securities - available for sale, Due after one year through five years, Market Value	6,870,056	6,220,563
Fixed maturity securities - available for sale, Due after five years through ten years, Market Value	2,052,733	2,203,932
Fixed maturity securities - available for sale, Due after ten years, Market Value	1,015,959	841,836
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities - available for sale, Amortized Cost	488,824	470,320
Fixed maturity securities - available for sale, Market Value	488,648	467,226
Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities - available for sale, Amortized Cost	308,827	264,924
Fixed maturity securities - available for sale, Market Value	306,932	266,299
Agency Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities - available for sale, Amortized Cost	2,415,901	2,313,265
Fixed maturity securities - available for sale, Market Value	2,405,469	2,320,524
Non-Agency Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities - available for sale, Amortized Cost	642	893
Fixed maturity securities - available for sale, Market Value	$ 641	$ 898

Investments (Summary Of Changes

Investments (Summary Of Changes In Net Unrealized Appreciation (Depreciation) For The Company's Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Deferred tax benefit (expense)	$ (68,301)	$ (28,724)	$ (21,780)
Total URA(D) on securities arising during the period	72,747	(180,439)	$ 22,096
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	96,611	(194,035)
Deferred tax benefit (expense)	(22,075)	16,979
Deferred tax benefit (expense), other-than-temporary impairment	(1,789)	(3,383)
Total URA(D) on securities arising during the period	72,747	(180,439)
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	85,972	(197,231)
Fixed Maturity Securities, Other-Than-Temporary Impairment [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	7,734	8,411
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	2,845	$ (5,215)
Other Invested Assets [Member]
Schedule of Available-for-sale Securities [Line Items]
Change in unrealized appreciation (depreciation), pre-tax	$ 60

Investments (Summary Of Aggrega

Investments (Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Security Type) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	$ 5,180,408	$ 4,928,451
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(91,871)	(139,624)
Fixed maturity securities, Greater than 12 months, Market Value	1,031,292	1,443,732
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(128,750)	(133,068)
Fixed maturity securities, Total, Market Value	6,211,700	6,372,183
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(220,621)	(272,692)
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	5,180,408	4,928,451
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(91,871)	(139,624)
Fixed maturity securities, Greater than 12 months, Market Value	925,785	1,351,825
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(115,966)	(116,336)
Fixed maturity securities, Total, Market Value	6,106,193	6,280,276
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(207,837)	(255,960)
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	638,740	539,177
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(5,303)	(1,855)
Fixed maturity securities, Greater than 12 months, Market Value		692
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation		(6)
Fixed maturity securities, Total, Market Value	638,740	539,869
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(5,303)	(1,861)
Obligations Of U.S. States And Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	221,088	6,434
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(11,486)	(84)
Fixed maturity securities, Greater than 12 months, Market Value	564	4,917
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(484)	(806)
Fixed maturity securities, Total, Market Value	221,652	11,351
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(11,970)	(890)
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	1,360,743	1,818,331
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(24,023)	(74,161)
Fixed maturity securities, Greater than 12 months, Market Value	177,153	440,682
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(11,735)	(35,149)
Fixed maturity securities, Total, Market Value	1,537,896	2,259,013
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(35,758)	(109,310)
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	150,023	348,545
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(565)	(2,510)
Fixed maturity securities, Greater than 12 months, Market Value	18,786	67,230
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(721)	(1,303)
Fixed maturity securities, Total, Market Value	168,809	415,775
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(1,286)	(3,813)
Commercial Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	143,554	145,490
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(3,223)	(3,375)
Fixed maturity securities, Greater than 12 months, Market Value	7,184
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(655)
Fixed maturity securities, Total, Market Value	150,738	145,490
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(3,878)	(3,375)
Agency Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	1,618,372	1,021,390
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(22,461)	(10,014)
Fixed maturity securities, Greater than 12 months, Market Value	189,665	326,449
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(5,449)	(8,045)
Fixed maturity securities, Total, Market Value	1,808,037	1,347,839
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(27,910)	(18,059)
Non-Agency Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value		152
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation		(2)
Fixed maturity securities, Greater than 12 months, Market Value	113	38
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(45)	(44)
Fixed maturity securities, Total, Market Value	113	190
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(45)	(46)
Foreign Government Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	360,289	227,384
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(12,041)	(21,996)
Fixed maturity securities, Greater than 12 months, Market Value	236,820	216,428
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(45,200)	(30,209)
Fixed maturity securities, Total, Market Value	597,109	443,812
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(57,241)	(52,205)
Foreign Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Less than 12 months, Market Value	687,599	821,548
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(12,769)	(25,627)
Fixed maturity securities, Greater than 12 months, Market Value	295,500	295,389
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(51,677)	(40,774)
Fixed maturity securities, Total, Market Value	983,099	1,116,937
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(64,446)	(66,401)
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Greater than 12 months, Market Value	105,507	91,907
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(12,784)	(16,732)
Fixed maturity securities, Total, Market Value	105,507	91,907
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	$ (12,784)	$ (16,732)

Investments (Summary Of Aggre65

Investments (Summary Of Aggregate Market Value And Gross Unrealized Depreciation Of Fixed Maturity And Equity Securities, By Contractual Maturity) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	$ 5,180,408	$ 4,928,451
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(91,871)	(139,624)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	1,031,292	1,443,732
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(128,750)	(133,068)
Fixed maturity securities, Total, Market Value	6,211,700	6,372,183
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(220,621)	(272,692)
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	5,180,408	4,928,451
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(91,871)	(139,624)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	925,785	1,351,825
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(115,966)	(116,336)
Fixed maturity securities, Total, Market Value	6,106,193	6,280,276
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(207,837)	(255,960)
Due In One Year Or Less [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	178,281	29,737
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(1,122)	(1,840)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	78,153	74,615
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(14,318)	(13,440)
Fixed maturity securities, Total, Market Value	256,434	104,352
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(15,440)	(15,280)
Due In One Year Through Five Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	2,123,113	2,328,805
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(26,263)	(62,329)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	538,130	651,228
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(84,803)	(59,993)
Fixed maturity securities, Total, Market Value	2,661,243	2,980,033
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(111,066)	(122,322)
Due In Five Years Through Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	680,334	969,139
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(22,555)	(52,725)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	86,631	206,538
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(8,754)	(28,018)
Fixed maturity securities, Total, Market Value	766,965	1,175,677
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(31,309)	(80,743)
Due After Ten Years [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	286,731	85,193
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(15,682)	(6,829)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	7,123	25,727
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(1,221)	(5,493)
Fixed maturity securities, Total, Market Value	293,854	110,920
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(16,903)	(12,322)
Asset-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	150,023	348,545
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(565)	(2,510)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	18,786	67,230
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(721)	(1,303)
Fixed maturity securities, Total, Market Value	168,809	415,775
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	(1,286)	(3,813)
Mortgage Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Fixed maturity securities, Duration of Unrealized Loss, Less than 12 months, Market Value	1,761,926	1,167,032
Fixed maturity securities, Duration of Unrealized loss, less than 12 months, Gross Unrealized Depreciation	(25,684)	(13,391)
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Market Value	196,962	326,487
Fixed maturity securities, Duration of Unrealized Loss, Greater than 12 months, Gross Unrealized Depreciation	(6,149)	(8,089)
Fixed maturity securities, Total, Market Value	1,958,888	1,493,519
Fixed maturity securities, Duration of Unrealized Loss, Total, Gross Unrealized Depreciation, Total	$ (31,833)	$ (21,480)

Investments (Summary Of Compone

Investments (Summary Of Components Of Net Investment Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	$ 494,312	$ 496,174	$ 555,988
Funds held interest income (expense)	7,853	10,767	9,471
Future policy benefit reserve income (expense)	(1,633)	(1,907)	(1,686)
Gross investment income	500,532	505,034	563,772
Investment expenses	(27,447)	(31,561)	(33,287)
Net investment income	473,085	473,473	530,485
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	410,337	433,097	462,757
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	40,707	45,617	47,193
Short-Term Investments And Cash [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	1,769	1,225	1,550
Limited Partnerships [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	38,647	14,431	40,868
Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Gross investment income before adjustments	$ 2,852	$ 1,804	$ 3,619

Investments (Summary Of Compo67

Investments (Summary Of Components Of Net Realized Capital Gains (Losses)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Other-than-temporary impairments									$ (31,595)	$ (102,199)	$ (39,502)
Total net realized capital gains (losses)	$ 34,005	$ 380	$ 32,658	$ (74,259)	$ 10,507	$ (159,971)	$ (24,178)	$ (10,505)	(7,216)	(184,147)	84,046
Fixed Maturity Securities [Member] | Market Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Other-than-temporary impairments									(31,595)	(102,199)	(39,502)
Gains (losses) from sales									6,918	(22,310)	4,408
Fixed Maturity Securities [Member] | Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									(1,586)	24	(3,137)
Gains (losses) from fair value adjustments									1,381	(44)	(1,498)
Equity Securities [Member] | Market Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									1,426	(6,702)	426
Equity Securities [Member] | Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									(13,442)	(7,305)	156
Gains (losses) from fair value adjustments									57,686	(45,627)	123,196
Sale of Subsidiary									(28,032)
Short-Term Investments And Cash [Member] | Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									10	$ 16	$ (3)
Other Invested Assets [Member] | Fair Value [Member]
Schedule of Available-for-sale Securities [Line Items]
Gains (losses) from sales									$ 18

Investments (Summary Of Gross G

Investments (Summary Of Gross Gains (Losses) From Sales Of Fixed Maturity And Equity Securities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fixed Maturity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of securities	$ 1,264,271	$ 1,725,917	$ 1,848,268
Gross gains from sales	53,093	47,899	37,427
Gross losses from sales	(47,761)	(70,185)	(36,156)
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of securities	729,782	642,980	600,970
Gross gains from sales	18,462	27,675	20,900
Gross losses from sales	$ (30,478)	$ (41,682)	$ (20,318)

Reserve For Losses, LAE And F69

Reserve For Losses, LAE And Future Policy Benefit Reserve (Narrative) (Details) $ in Thousands	Jul. 13, 2015USD ($)	Dec. 31, 2016USD ($)item	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Increase (decrease) in reinsurance business		$ 468,749	$ 217,169	$ 202,418
Increase (decrease) in insurance business		(295,335)	(65,029)	(39,676)
Partially offset, related to development on A&E reserves		173,414
Reinsurance receivables		$ 1,018,325	894,037
Reinsurance receivable, percent		5.00%
Contracts of insurance and reinsurance received claims during the past three years, in years		20 years
Case reserve established by the Company on direct excess insurance claims		$ 10,312,313	9,951,798	9,720,813	$ 9,673,240
Liabilites retroceded, percentage	100.00%
Business acquisition, cost of acquired entity and operations, cash paid	$ 140,279
Maximum liability retroceded	440,279
Total amount of liabilities retroceded	300,000
Number of exposure groupings | item		200
Construction Liability, Umbrella, and Workers Compenstion Reserves [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Increase (decrease) in insurance business			152,140	24,973
Explosion, Port Of Tianjin, China [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Partially offset, related to development on A&E reserves		$ 43,280
Explosion, Port Of Tianjin, China [Member] | Estimated [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Increase (decrease) in reinsurance business			$ 60,000
Explosion, Port Of Tianjin, China [Member] | Projected [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Increase (decrease) in reinsurance business		16,720
Resolution Group Reinsurance (Barbados) Limited [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance receivables		$ 175,042
Reinsurance receivable, percent		17.20%
Zurich Vericherungs Gesellschaft [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance receivables		$ 109,392
Reinsurance receivable, percent		10.70%
C. V. Starr [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance receivables		$ 129,040
Reinsurance receivable, percent		12.70%
Mt. Logan Re [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance receivables		$ 78,225
Reinsurance receivable, percent		7.70%
Federal Crop Insurance Company [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Reinsurance receivables		$ 51,124
Reinsurance receivable, percent		5.00%
A&E [Member]
Reserve For Losses LAE And Future Policy Benefit Reserve [Line Items]
Partially offset, related to development on A&E reserves		$ 53,909		$ 137,769
Business acquisition, cost of acquired entity and operations, cash paid	$ 100,451

Reserve For Losses, LAE And F70

Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Activity In The Reserve For Losses And LAE) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Reserve For Losses LAE And Future Policy Benefit Reserve [Abstract]
Gross reserves at January 1	$ 9,951,798	$ 9,720,813	$ 9,673,240
Less reinsurance recoverable	990,862	881,503	655,095	$ 478,151
Net reserves at January 1	9,070,295	9,065,718	9,195,089
Incurred related to: Current year	3,434,964	3,129,744	2,915,612
Incurred related to: Prior years	(295,335)	(65,029)	(39,676)
Total incurred losses and LAE	3,139,629	3,064,715	2,875,936
Paid related to: Current year	745,642	690,030	755,880
Paid related to: Prior years	2,042,972	2,180,076	2,088,772
Total paid losses and LAE	2,788,614	2,870,106	2,844,652
Foreign exchange/translation adjustment	(99,859)	(190,032)	(160,655)
Net reserves at December 31	9,321,451	9,070,295	9,065,718
Plus reinsurance recoverable	990,862	881,503	655,095
Gross reserves at December 31	$ 10,312,313	$ 9,951,798	$ 9,720,813

Reserve For Losses, LAE And F71

Reserve For Losses, LAE And Future Policy Benefit Reserve (Ultimate Loss and ALAE And Paid Loss And ALAE, Net Of Reinsurance) (Details) item in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)item	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)	Dec. 31, 2012USD ($)
Liability for claims and claim adjustments expenses, net of reinsurance	$ 9,144,514
U.S. Reinsurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,785,940
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	540,617
All outstanding liabilities prior to 2012, net of reinsurance	1,103,846
Liability for claims and claim adjustments expenses, net of reinsurance	2,349,169
U.S. Reinsurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	3,047,676
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	1,934,594
All outstanding liabilities prior to 2012, net of reinsurance	70,472
Liability for claims and claim adjustments expenses, net of reinsurance	1,183,554
International [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	797,159
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	274,456
All outstanding liabilities prior to 2012, net of reinsurance	132,472
Liability for claims and claim adjustments expenses, net of reinsurance	655,175
International [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,311,193
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	1,562,200
All outstanding liabilities prior to 2012, net of reinsurance	135,170
Liability for claims and claim adjustments expenses, net of reinsurance	884,163
Bermuda [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	1,330,278
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	329,328
All outstanding liabilities prior to 2012, net of reinsurance	507,747
Liability for claims and claim adjustments expenses, net of reinsurance	1,508,697
Bermuda [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	767,749
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	461,959
All outstanding liabilities prior to 2012, net of reinsurance	44,730
Liability for claims and claim adjustments expenses, net of reinsurance	350,520
Insurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	2,279,161
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	861,765
All outstanding liabilities prior to 2012, net of reinsurance	644,177
Liability for claims and claim adjustments expenses, net of reinsurance	2,061,572
Insurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	746,400
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	594,908
All outstanding liabilities prior to 2012, net of reinsurance	171
Liability for claims and claim adjustments expenses, net of reinsurance	151,663
2012 [Member] | U.S. Reinsurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	320,908	$ 324,870	$ 328,910	$ 395,674	$ 400,944
Total of IBNR Liabilities Plus Expected Development on Reported Claims	69,381
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	2,012
2012 [Member] | U.S. Reinsurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	608,182	608,568	621,543	723,126	937,168
Total of IBNR Liabilities Plus Expected Development on Reported Claims	15,899
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	2,012
2012 [Member] | International [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	118,381	134,806	134,433	145,165	222,381
Total of IBNR Liabilities Plus Expected Development on Reported Claims	19,893
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	2,012
2012 [Member] | International [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	468,340	468,016	464,379	516,568	562,356
Total of IBNR Liabilities Plus Expected Development on Reported Claims	3,276
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	2,012
2012 [Member] | Bermuda [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	236,554	228,861	238,136	257,552	277,335
Total of IBNR Liabilities Plus Expected Development on Reported Claims	69,097
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	2,012
2012 [Member] | Bermuda [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	159,285	158,711	162,787	177,683	233,738
Total of IBNR Liabilities Plus Expected Development on Reported Claims	624
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	2,012
2012 [Member] | Insurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	353,145	347,989	346,685	351,107	349,301
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 50,190
Cumulative Number of Reported Claims | item	15,638
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 2,016	2,015	2,014	2,013	2,012
2012 [Member] | Insurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	81,957	82,382	81,682	88,908	106,229
Total of IBNR Liabilities Plus Expected Development on Reported Claims	52
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	2,016	2,015	2,014	2,013	$ 2,012
2013 [Member] | U.S. Reinsurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	388,157	385,498	388,247	310,899
Total of IBNR Liabilities Plus Expected Development on Reported Claims	147,320
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	170,781	108,736	48,891	14,814
2013 [Member] | U.S. Reinsurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	455,623	494,573	547,741	621,644
Total of IBNR Liabilities Plus Expected Development on Reported Claims	8,005
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	405,331	381,281	322,603	234,163
2013 [Member] | International [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	146,192	164,664	167,152	182,388
Total of IBNR Liabilities Plus Expected Development on Reported Claims	38,720
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	68,508	55,190	41,511	17,945
2013 [Member] | International [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	402,109	409,911	446,011	493,798
Total of IBNR Liabilities Plus Expected Development on Reported Claims	5,153
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	357,358	326,747	272,527	135,240
2013 [Member] | Bermuda [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	259,719	250,151	254,485	223,085
Total of IBNR Liabilities Plus Expected Development on Reported Claims	120,413
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	78,476	53,035	34,498	17,185
2013 [Member] | Bermuda [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	120,904	129,687	147,275	203,306
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1,207
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	114,050	106,936	67,966	31,315
2013 [Member] | Insurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	392,829	392,539	393,103	393,201
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 101,156
Cumulative Number of Reported Claims | item	21,168
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 224,558	176,280	117,016	33,303
2013 [Member] | Insurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	91,956	91,054	97,870	111,926
Total of IBNR Liabilities Plus Expected Development on Reported Claims	5
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	91,923	91,653	92,945	$ 68,656
2014 [Member] | U.S. Reinsurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	392,300	383,597	367,454
Total of IBNR Liabilities Plus Expected Development on Reported Claims	215,144
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	110,199	54,220	18,791
2014 [Member] | U.S. Reinsurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	473,579	550,471	641,489
Total of IBNR Liabilities Plus Expected Development on Reported Claims	46,920
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	369,615	321,473	218,595
2014 [Member] | International [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	170,072	187,335	194,110
Total of IBNR Liabilities Plus Expected Development on Reported Claims	66,586
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	63,412	45,309	25,854
2014 [Member] | International [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	491,539	536,437	590,986
Total of IBNR Liabilities Plus Expected Development on Reported Claims	73,701
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	352,586	285,019	163,098
2014 [Member] | Bermuda [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	257,310	239,078	205,404
Total of IBNR Liabilities Plus Expected Development on Reported Claims	163,951
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	43,582	25,272	13,846
2014 [Member] | Bermuda [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	131,588	157,187	178,615
Total of IBNR Liabilities Plus Expected Development on Reported Claims	13,592
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	101,239	81,535	28,540
2014 [Member] | Insurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	454,071	456,532	430,554
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 151,768
Cumulative Number of Reported Claims | item	24,829
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 201,545	124,865	41,182
2014 [Member] | Insurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	119,781	123,487	131,505
Total of IBNR Liabilities Plus Expected Development on Reported Claims	1,044
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	118,085	115,913	$ 81,766
2015 [Member] | U.S. Reinsurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	354,224	326,321
Total of IBNR Liabilities Plus Expected Development on Reported Claims	248,529
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	53,592	19,882
2015 [Member] | U.S. Reinsurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	543,978	679,170
Total of IBNR Liabilities Plus Expected Development on Reported Claims	113,327
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	327,261	226,198
2015 [Member] | International [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	179,393	192,610
Total of IBNR Liabilities Plus Expected Development on Reported Claims	99,975
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	49,198	24,408
2015 [Member] | International [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	439,133	563,857
Total of IBNR Liabilities Plus Expected Development on Reported Claims	68,845
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	267,899	145,406
2015 [Member] | Bermuda [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	293,967	263,919
Total of IBNR Liabilities Plus Expected Development on Reported Claims	196,691
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	58,647	13,664
2015 [Member] | Bermuda [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	157,662	187,738
Total of IBNR Liabilities Plus Expected Development on Reported Claims	45,387
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	72,186	32,687
2015 [Member] | Insurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	527,109	518,706
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 282,784
Cumulative Number of Reported Claims | item	25,939
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 134,658	44,298
2015 [Member] | Insurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	152,580	172,535
Total of IBNR Liabilities Plus Expected Development on Reported Claims	3,999
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	141,010	$ 102,005
2016 [Member] | U.S. Reinsurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	330,352
Total of IBNR Liabilities Plus Expected Development on Reported Claims	272,614
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	18,920
2016 [Member] | U.S. Reinsurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	966,314
Total of IBNR Liabilities Plus Expected Development on Reported Claims	488,562
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	286,082
2016 [Member] | International [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	183,120
Total of IBNR Liabilities Plus Expected Development on Reported Claims	135,120
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	26,582
2016 [Member] | International [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	510,072
Total of IBNR Liabilities Plus Expected Development on Reported Claims	151,258
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	150,819
2016 [Member] | Bermuda [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	282,729
Total of IBNR Liabilities Plus Expected Development on Reported Claims	208,938
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	45,134
2016 [Member] | Bermuda [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	198,310
Total of IBNR Liabilities Plus Expected Development on Reported Claims	123,224
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	26,324
2016 [Member] | Insurance [Member] | Casualty [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	552,006
Total of IBNR Liabilities Plus Expected Development on Reported Claims	$ 406,759
Cumulative Number of Reported Claims | item	23,463
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 54,710
2016 [Member] | Insurance [Member] | Property Business [Member]
Incurred Claims and Allocated Claim Adjustment Expenses, Net of reinsurance	300,127
Total of IBNR Liabilities Plus Expected Development on Reported Claims	82,989
Cumulative Paid Claims and Allocated Claim Adjustment Expenses, Net of Reinsurance	$ 162,060

Reserve For Losses, LAE And F72

Reserve For Losses, LAE And Future Policy Benefit Reserve (Average Annual Percentage Payout Incurred Claims By Age, Net Of Reinsurance) (Details)	12 Months Ended
	Dec. 31, 2016
Casualty [Member] | U.S. Reinsurance [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	4.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	9.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	14.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	17.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	13.60%
Casualty [Member] | International [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	14.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	12.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	11.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	9.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	8.30%
Casualty [Member] | Bermuda [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	7.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	8.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	7.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	10.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	11.30%
Casualty [Member] | Insurance [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	9.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	18.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	16.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	13.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	9.30%
Property Business [Member] | U.S. Reinsurance [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	39.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	21.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	12.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	5.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	2.90%
Property Business [Member] | International [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	34.40%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	28.20%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	14.00%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	6.30%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	2.90%
Property Business [Member] | Bermuda [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	21.40%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	29.60%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	21.80%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	11.70%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	4.20%
Property Business [Member] | Insurance [Member]
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year One	63.10%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Two	27.50%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Three	(0.10%)
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Four	0.90%
Average Annual Percentage Payout of Incurred Claims by Age, Net of Reinsurance, Year Five	0.20%

Reserve For Losses, LAE And F73

Reserve For Losses, LAE And Future Policy Benefit Reserve (Reconciliation of the Net Incurred and Paid Claims Development) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	$ 9,144,514
Total reinsurance recoverable on unpaid claims	990,862
Insurance lines other than short-duration
Unallocated claims adjustment expenses	132,210
Other	44,727
Total other rxpenses	176,937
Total gross liability for unpaid claims and claim adjustment expense	10,312,313	$ 9,951,798	$ 9,720,813	$ 9,673,240
U.S. Reinsurance [Member] | Casualty [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	2,349,169
Total reinsurance recoverable on unpaid claims	98,282
U.S. Reinsurance [Member] | Property Business [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	1,183,554
Total reinsurance recoverable on unpaid claims	84,224
International [Member] | Casualty [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	655,175
Total reinsurance recoverable on unpaid claims	83,912
International [Member] | Property Business [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	884,163
Total reinsurance recoverable on unpaid claims	79,044
Bermuda [Member] | Casualty [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	1,508,697
Total reinsurance recoverable on unpaid claims	10,135
Bermuda [Member] | Property Business [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	350,520
Total reinsurance recoverable on unpaid claims	101,210
Insurance [Member] | Casualty [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	2,061,572
Total reinsurance recoverable on unpaid claims	498,493
Insurance [Member] | Property Business [Member]
Liabilities for unpaid claims and claim adjustment expenses, net of reinsurance	151,663
Total reinsurance recoverable on unpaid claims	$ 35,562

Reserve For Losses, LAE And F74

Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Incurred Losses With Respect To A&E Reserves On Both Gross And Net Of Reinsurance Basis) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reserve For Losses LAE And Future Policy Benefit Reserve [Abstract]
Gross basis: Beginning of period reserves	$ 433,117	$ 476,205	$ 402,461
Gross basis: Incurred losses	73,336	40,000	142,233
Gross basis: Paid losses	(65,342)	(83,088)	(68,489)
Gross basis: End of period reserves	441,111	433,117	476,205
Net basis: Beginning of period reserves	319,620	458,211	386,677
Net basis: Incurred losses	53,909	38,440	137,769
Net basis: Paid losses	(54,457)	(177,031)	(66,235)
Net basis: End of period reserves	$ 319,072	$ 319,620	$ 458,211

Reserve For Losses, LAE And F75

Reserve For Losses, LAE And Future Policy Benefit Reserve (Summary Of Activity In The Reserve For Future Policy Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reserve For Losses LAE And Future Policy Benefit Reserve [Abstract]
Balance at beginning of year	$ 58,910	$ 59,820	$ 59,512
Liabilities assumed	175	315	250
Adjustments to reserves	303	2,310	4,724
Benefits paid in the current year	(4,315)	(3,535)	(4,667)
Balance at end of year	$ 55,074	$ 58,910	$ 59,820

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details)	12 Months Ended
	Dec. 31, 2016USD ($)item	Dec. 31, 2015USD ($)security	Dec. 31, 2016GBP (£)security	Dec. 31, 2016USD ($)security	Dec. 31, 2005security	Dec. 31, 2001security
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of public equity portfolio		$ 253,575,000		$ 256,041,000
Number of equity index put option contracts | security					7	7
Derivatives, Number Of Indices | item	2
other invested assets		316,408,000		263,459,000
Transfers between level 1 and 2				$ 0
Transfers from level 3	$ (1,903,000)	$ (8,199,000)
Private Placement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of equity index put option contracts | security		2	42	42
Unavailability Of Prices [Member] | Private Placement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities		$ 3,593,000		$ 86,536,000
Standard & Poor's 500 Index [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of equity index put option contracts | security			6	6
Theoretical maximum payout occurs based on index value				$ 0
Fair Value of equity put options				22,530,000
Estimates the probability of equity index put option contract will falling below the strike price on the exercise date	7.00%
Discount factor	3.00%
Present value of theoretical maximum payouts				445,627,000
Settlement amount if contracts had expired				0
Equity Index				$ 2,238.83
FTSE 100 Index [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Number of equity index put option contracts | security			1	1
Theoretical maximum payout occurs based on index value				$ 0
Fair Value of equity put options				6,706,000
Estimates the probability of equity index put option contract will falling below the strike price on the exercise date	25.00%
Discount factor	3.00%
Present value of theoretical maximum payouts				36,231,000
Settlement amount if contracts had expired				0
Equity Index | £			£ 7,142.83
Parent Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
other invested assets		56,314,000		60,603,000
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value of equity put options		$ 40,705,000		22,059,000
Fair Value [Member] | Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
other invested assets				$ 18,801,000

Fair Value (Fair Value Measurem

Fair Value (Fair Value Measurement Levels For All Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	$ 14,107,408	$ 13,357,294
Fixed maturities, fair value		2,102
Equity securities, market value	119,067	108,940
Equity securities, fair value	1,010,085	1,337,733
Equity index put option contracts	22,059	40,705
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Equity securities, market value	105,507	91,907
Equity securities, fair value	949,523	1,275,666
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	14,039,673	13,351,768
Fixed maturities, fair value		2,102
Equity securities, market value	13,560	17,033
Equity securities, fair value	60,562	62,067
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	67,735	5,526
Equity index put option contracts	22,059	40,705
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	1,130,315	816,877
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	1,130,315	816,877
Obligations Of U.S. States And Political Subdivisions [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	729,984	703,075
Obligations Of U.S. States And Political Subdivisions [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	729,984	703,075
Corporate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	5,155,281	4,804,863
Corporate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	5,090,084	4,800,930
Corporate Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	65,197	3,933
Asset-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	488,648	467,226
Asset-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	488,648	467,226
Commercial Mortgage-Backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	306,932	266,299
Commercial Mortgage-Backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	306,932	266,299
Agency Residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	2,405,469	2,320,524
Agency Residential [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	2,405,469	2,320,524
Non-Agency Residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	641	898
Non-Agency Residential [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	641	898
Foreign Government Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	1,258,160	1,259,181
Foreign Government Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	1,258,160	1,259,181
Foreign Corporate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	2,631,978	2,718,351
Foreign Corporate Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	2,629,440	2,716,758
Foreign Corporate Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed maturities, market value	$ 2,538	$ 1,593

Fair Value (Activity Under Leve

Fair Value (Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 5,526	$ 15,763
Total gains or (losses) (realized/unrealized) Included in earnings	(1,093)	(9,476)
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	57	3,812
Purchases, issuances and settlements	65,148	3,626
Transfers in and/or (out) of Level 3	(1,903)	(8,199)
Ending balance	67,735	5,526
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date		9,721
Corporate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	3,933
Total gains or (losses) (realized/unrealized) Included in earnings	100	4
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	41	(96)
Purchases, issuances and settlements	63,054	3,626
Transfers in and/or (out) of Level 3	(1,931)	399
Ending balance	65,197	3,933
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date
Commercial Mortgage-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		8,597
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)	16
Purchases, issuances and settlements	(44)
Transfers in and/or (out) of Level 3	28	(8,597)
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date
Foreign Corporate Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	1,593	7,166
Total gains or (losses) (realized/unrealized) Included in earnings	(1,193)	(9,480)
Total gains or (losses) (realized/unrealized) Included in other comprehensive income (loss)		3,908
Purchases, issuances and settlements	2,138
Transfers in and/or (out) of Level 3		(1)
Ending balance	2,538	1,593
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to assets still held at the reporting date		$ 9,721

Fair Value (Fair Value Measur79

Fair Value (Fair Value Measurements Using Significant Unobservable Inputs For Equity Index Put Option Contracts) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value [Abstract]
Balance, beginning of period	$ 40,705	$ 47,022
Total (gains) or losses (realized/unrealized) Included in earnings	(18,646)	(6,317)
Total (gains) or losses (realized/unrealized) Included in other comprehensive income (loss)
Purchases, issuances and settlements
Transfers in and/or (out) of Level 3
Balance, end of period	22,059	40,705
The amount of total gains or losses for the period included in earnings (or changes in net assets) attributable to the change in unrealized gains or losses relating to liabilities still held at the reporting date

Credit Facilities (Narrative) (

Credit Facilities (Narrative) (Details) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016GBP (£)item	Dec. 31, 2015GBP (£)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Nov. 09, 2015GBP (£)	Jun. 22, 2012USD ($)	Jul. 27, 2007USD ($)
Line of Credit Facility [Line Items]
Line of credit facility, number of facilities | item	2
Line of credit facility, commitment			$ 1,000,000
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, term of credit facility	5 years
Line of credit facility, commitment			$ 800,000	$ 800,000		$ 800,000
Line of credit facility, required minimum debt-to-capital ratio	0.35		0.35
Line of credit facility, required minimum net worth			$ 5,370,979
Percentage amount of consolidated net income required to be reserved to maintain compliance with facility covenants	25.00%
Percentage amount of increase in consolidated net worth from new issuance required to be reserved to maintain compliance with facility covenants	25.00%
Increase in reserves due to new issuance during the period required to maintain compliance with facility covenants			5,584,382
Wells Fargo Bank Group Credit Facility [Member] | Federal Funds [Member]
Line of Credit Facility [Line Items]
Line of credit facility, spread on variable rate basis	0.50%
Wells Fargo Bank Group Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Line of credit facility, spread on variable rate basis	1.00%
Wells Fargo Bank Group Credit Facility [Member] | Interest Rate Base Rate Option 1 [Member]
Line of Credit Facility [Line Items]
Debt Instrument Description Of Variable Rate Basis	an adjusted London Interbank Offered Rate ("LIBOR") plus a margin.
Wells Fargo Bank Group Credit Facility [Member] | Interest Rate Base Rate Option 1(a) [Member]
Line of Credit Facility [Line Items]
Debt Instrument Description Of Variable Rate Basis	prime commercial lending rate established by Wells Fargo Bank
Wells Fargo Bank Group Credit Facility [Member] | Interest Rate Base Rate Option 1(b) [Member]
Line of Credit Facility [Line Items]
Debt Instrument Description Of Variable Rate Basis	Federal Funds Rate plus 0.5
Wells Fargo Bank Group Credit Facility [Member] | Interest Rate Base Rate Option 1(c) [Member]
Line of Credit Facility [Line Items]
Debt Instrument Description Of Variable Rate Basis	one month LIBOR Rate plus 1.0
Wells Fargo Bank Group Credit Facility Tranche One [Member]
Line of Credit Facility [Line Items]
Line of credit facility, term of credit facility	4 years
Line of credit facility, commitment			200,000	200,000			$ 800,000
Wells Fargo Bank Group Credit Facility Tranche Two [Member]
Line of Credit Facility [Line Items]
Line of credit facility, commitment			600,000
Citibank Holdings Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, initiation date	Aug. 15, 2011
Line of credit facility, term of credit facility	3 years
Line of credit facility, commitment				150,000
Citibank Bilateral Agreement [Member]
Line of Credit Facility [Line Items]
Line of credit facility, commitment			$ 200,000	$ 300,000
Per annum commitment fee on undrawn credit	0.15%
Citibank Bilateral Agreement [Member] | Interest Rate Base Rate Option 1(a) [Member]
Line of Credit Facility [Line Items]
Line of credit facility, term of credit facility	15 months
Debt Instrument Description Of Variable Rate Basis	% per annum of the principal amount of issued standard letters of credit (expiry of 15 months or less)
Percentage of interest on the principal amount of letters of credit issued	0.35%
Citibank Bilateral Agreement [Member] | Interest Rate Base Rate Option 1(b) [Member]
Line of Credit Facility [Line Items]
Line of credit facility, term of credit facility	60 months
Debt Instrument Description Of Variable Rate Basis	% per annum of the principal amount of issued extended tenor letters of credit (expiry maximum of up to 60 months).
Percentage of interest on the principal amount of issued extended tenor letters of credit	0.45%
Everest International Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, required minimum debt-to-capital ratio	0.35		0.35
Line of credit facility, required minimum net worth			$ 5,326,009
Consolidated net worth, percentage		70.00%
Percentage amount of consolidated net income required to be reserved to maintain compliance with facility covenants	25.00%
Percentage amount of increase in consolidated net worth from new issuance required to be reserved to maintain compliance with facility covenants	25.00%
Increase in reserves due to new issuance during the period required to maintain compliance with facility covenants			$ 5,584,382
Lloyd's of London Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, term of credit facility	4 years
Line of credit facility, commitment | £	£ 140,000	£ 175,000			£ 140,000
Percentage commitment fee per annum	0.10%
Per annum commitment fee on undrawn credit	0.35%

Credit Facilities (Summary Of C

Credit Facilities (Summary Of Costs Incurred Connection With Credit Facilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Credit Facilities [Abstract]
Credit facility fees incurred	$ 793	$ 756	$ 659

Credit Facilities (Summary Of O

Credit Facilities (Summary Of Outstanding Letters Of Credit And/Or Borrowings) (Details) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016GBP (£)	Dec. 31, 2015GBP (£)	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Nov. 09, 2015GBP (£)	Jun. 22, 2012USD ($)	Jul. 27, 2007USD ($)
Line of Credit Facility [Line Items]
Commitment			$ 1,000,000
Wells Fargo Bank Group Credit Facility Tranche One [Member]
Line of Credit Facility [Line Items]
Commitment			200,000	$ 200,000			$ 800,000
Wells Fargo Bank Group Credit Facility Tranche Two Issuance One [Member]
Line of Credit Facility [Line Items]
Commitment			600,000	600,000
In Use				2,488
Date of Expiry		Dec. 12, 2016
Wells Fargo Bank Group Credit Facility Tranche Two Issuance Two [Member]
Line of Credit Facility [Line Items]
In Use			478,233	447,178
Date of Expiry	Dec. 31, 2017	Dec. 31, 2016
Wells Fargo Bank Group Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment			800,000	800,000		$ 800,000
In Use			478,233	449,666
Citibank Bilateral Letter Of Credit Agreement One [Member]
Line of Credit Facility [Line Items]
Commitment			200,000	300,000
In Use			4,058	3,672
Date of Expiry	Feb. 28, 2017	Nov. 24, 2016
Citibank Bilateral Letter Of Credit Agreement Two [Member]
Line of Credit Facility [Line Items]
In Use			3,672	67,783
Date of Expiry	Nov. 24, 2017	Dec. 31, 2016
Citibank Bilateral Letter Of Credit Agreement Three [Member]
Line of Credit Facility [Line Items]
In Use			69,404	179
Date of Expiry	Dec. 31, 2017	Aug. 30, 2017
Citibank Bilateral Letter Of Credit Agreement Four [Member]
Line of Credit Facility [Line Items]
In Use			269	316
Date of Expiry	Aug. 30, 2018	Dec. 31, 2017
Citibank Bilateral Letter Of Credit Agreement Five [Member]
Line of Credit Facility [Line Items]
In Use			1,163
Date of Expiry	Dec. 31, 2018
Citibank Bilateral Letter Of Credit Agreement Six [Member]
Line of Credit Facility [Line Items]
In Use			93,180	99,521
Date of Expiry	Dec. 30, 2020	Dec. 31, 2019
Citibank Bilateral Agreement [Member]
Line of Credit Facility [Line Items]
Commitment			200,000	300,000
In Use			$ 171,746	$ 171,471
Lloyd's Bank PLC [Member]
Line of Credit Facility [Line Items]
Commitment | £	£ 140,000	£ 175,000
In Use | £	£ 130,606	£ 164,961
Date of Expiry	Dec. 31, 2019	Dec. 31, 2019
Lloyd's of London Bank Credit Facility [Member]
Line of Credit Facility [Line Items]
Commitment | £	£ 140,000	£ 175,000			£ 140,000
In Use | £	£ 130,606	£ 164,961

Senior Notes (Narrative) (Detai

Senior Notes (Narrative) (Details) - Senior Notes [Member] - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
4.868% Senior notes due 6/1/2044 [Member]
Debt Instrument [Line Items]
Date Issued	Jun. 5, 2014
Principal amounts	$ 400,000,000
Debt Instrument, Term	30 years
Debt instrument, stated interest rate	4.868%	4.868%
Date due	Jun. 1, 2044
5.4% Senior notes due 10/15/2014 [Member]
Debt Instrument [Line Items]
Date Issued	Oct. 12, 2004
Principal amounts	$ 250,000,000
Debt instrument, stated interest rate	5.40%
Date due	Oct. 15, 2014

Senior Notes (Schedule Of Outst

Senior Notes (Schedule Of Outstanding Senior Notes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Consolidated balance sheet amount	$ 396,714,000	$ 396,594,000
4.868% Senior notes due 6/1/2044 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.868%	4.868%
Date issued	Jun. 5, 2014
Date due	Jun. 1, 2044
Principal amounts	$ 400,000,000
Consolidated balance sheet amount	396,714,000	$ 396,594,000
Market value	$ 383,612,000	$ 381,204,000
5.4% Senior notes due 10/15/2014 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	5.40%
Date issued	Oct. 12, 2004
Date due	Oct. 15, 2014
Principal amounts	$ 250,000,000

Senior Notes (Schedule Of Inter

Senior Notes (Schedule Of Interest Expense Incurred In Connection With Senior Notes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Senior Notes [Abstract]
Interest expense incurred	$ 19,472	$ 19,472	$ 21,818

Long Term Subordinated Notes (N

Long Term Subordinated Notes (Narrative) (Details) - USD ($) $ in Thousands	Mar. 19, 2009	Dec. 31, 2016	Dec. 31, 2015
Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate		6.60%	6.60%
Maturity Date		May 1, 2067
Percentage of principal amount required for redemption		100.00%
Outstanding debt reduction	$ 161,441
Long Term Subordinated Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Applicable spread on treasury rate		0.25%
Long Term Subordinated Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Applicable spread on treasury rate		0.50%
Fixed Rate Interest Period [Member] | Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate		6.60%
Interest basis, 3 month LIBOR plus number of basis points, reset quarterly		2.385%
Right to defer interest on one or more occasions for up to number of consecutive years		10 years
Fixed Rate Interest Period [Member] | Long Term Subordinated Notes [Member] | Minimum [Member]
Debt Instrument [Line Items]
Interest payment date		May 3, 2007
Fixed Rate Interest Period [Member] | Long Term Subordinated Notes [Member] | Maximum [Member]
Debt Instrument [Line Items]
Interest payment date		May 14, 2017
Floating Rate Interest Period [Member] | Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Right to defer interest on one or more occasions for up to number of consecutive years		10 years
5.4% Senior notes due 10/15/2014 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate		5.40%
Maturity Date		Oct. 15, 2014
4.868% Senior notes due 6/1/2044 [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate		4.868%	4.868%
Maturity Date		Jun. 1, 2044

Long Term Subordinated Notes (S

Long Term Subordinated Notes (Schedule Of Outstanding Fixed To Floating Rate Long Term Subordinated Notes) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Consolidated balance sheet amount	$ 236,462,000	$ 236,364,000
Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Debt instrument, stated interest rate	6.60%	6.60%
Date Issued	Apr. 26, 2007
Original Principal Amount	$ 400,000,000
Maturity Date	May 1, 2067
Consolidated balance sheet amount	$ 236,462,000	$ 236,364,000
Market value	204,636,000	208,978,000
Parent Company [Member]
Debt Instrument [Line Items]
Consolidated balance sheet amount	$ 250,000,000	$ 250,000,000
Scheduled [Member] | Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Maturity Date	May 15, 2037
Final [Member] | Long Term Subordinated Notes [Member]
Debt Instrument [Line Items]
Maturity Date	May 1, 2067

Long Term Subordinated Notes 88

Long Term Subordinated Notes (Schedule Of Interest Expense Incurred In Connection With Long Term Subordinated Notes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Long Term Subordinated Notes [Abstract]
Interest expense incurred	$ 15,749	$ 15,749	$ 15,749

Collateralized Reinsurance An89

Collateralized Reinsurance And Trust Agreements (Narrative) (Details) $ in Thousands	Dec. 01, 2015USD ($)item	Nov. 18, 2014USD ($)	Apr. 24, 2014USD ($)	Dec. 31, 2016USD ($)item	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Effects of Reinsurance [Line Items]
Amount on deposit in trust accounts				$ 466,029
Percentage of voting common shares owned by Group				100.00%
Assumed net risk exposures				$ 932,243	$ 798,548
Preferred shares invested
Reinsurance coverage amount				762,969	709,402	$ 630,446
Redeemable Preferred Stock [Member]
Effects of Reinsurance [Line Items]
Assumed net risk exposures				$ 55,536	$ 50,000
Kilimanjaro Re Limited [Member]
Effects of Reinsurance [Line Items]
Number of collateralized reinsurance agreements | item	2			2
Kilimanjaro Re Limited [Member] | Catastrophe Reinsurance [Member]
Effects of Reinsurance [Line Items]
Reinsurance coverage amount		$ 500,000
Catastrophe reinsurance bonds funded amount	$ 625,000	$ 500,000	$ 450,000
Kilimanjaro Re Limited [Member] | Catastrophe Reinsurance Agreement 1 [Member]
Effects of Reinsurance [Line Items]
Reinsurance coverage amount	300,000		250,000
Kilimanjaro Re Limited [Member] | Catastrophe Reinsurance Agreement 2 [Member]
Effects of Reinsurance [Line Items]
Reinsurance coverage amount	$ 325,000		$ 200,000

Collateralized Reinsurance An90

Collateralized Reinsurance And Trust Agreements (Premiums And Losses Ceded By The Company To Affiliate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effects of Reinsurance [Line Items]
Ceded written premiums	$ 762,969	$ 709,402	$ 630,446
Assumed written premiums	4,214,286	4,321,922	4,535,231
Mt. Logan Re Segregated Accounts [Member]
Effects of Reinsurance [Line Items]
Ceded written premiums	197,537	234,001	138,362
Ceded earned premiums	191,568	226,385	139,317
Ceded losses and LAE	44,802	40,807	30,598
Assumed written premiums	14,563	15,421	13,889
Assumed earned premiums	$ 14,563	$ 15,421	$ 13,889

Operating Lease Agreements (Nar

Operating Lease Agreements (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leased Assets [Line Items]
Rental expense	$ 17,663	$ 15,986	$ 15,519
Minimum [Member]
Operating Leased Assets [Line Items]
Lease expiration year	2,018
Maximum [Member]
Operating Leased Assets [Line Items]
Lease expiration year	2,027

Operating Lease Agreements (Fut

Operating Lease Agreements (Future Minimum Rental Commitments) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Operating Lease Agreements [Abstract]
2,017	$ 14,818
2,018	15,302
2,019	15,801
2,020	15,170
2,021	6,307
Thereafter	23,769
Net commitments	$ 91,168

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Accrual withholding taxes percent	5.00%
Accrual Withholding Taxes	$ 0
Tax benefits related to share-based compensation	7,458	$ 8,064
Foreign tax credits	0	11,836
Alternative minimum tax credits		7,604
Net operating loss carryforward	$ 6,341	3,412
2009 Through 2013 IRS Audit [Member]
Income Tax Contingency [Line Items]
IRS audit period	5 years
IRS net refund	$ 44,241	$ 34,234	$ 34,234
Interest on net refund	3,396
Minimum amount of net refund that needs to be reviewed and approved	$ 5,000

Income Taxes (Components Of The

Income Taxes (Components Of The Provision) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Abstract]
U.S.	$ 30,971	$ 90,486	$ 143,297
Non-U.S.	4,228	14,811	22,575
Total current tax expense (benefit)	35,199	105,297	165,872
U.S.	70,995	28,724	21,780
Non-U.S.	(2,694)
Total deferred tax expense (benefit)	68,301	28,724	21,780
Total income tax expense (benefit)	$ 103,500	$ 134,021	$ 187,652

Income Taxes (Reconciliation Of

Income Taxes (Reconciliation Of The Difference Between The Provision For Income Taxes And The Expected Tax Provision At The Weighted Average Tax Rate) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Net investment income	$ 115,167	$ 122,657	$ 132,737	$ 102,524	$ 110,514	$ 115,403	$ 124,990	$ 122,566	$ 473,085	$ 473,473	$ 530,485
Net realized capital gains (losses)	$ 34,005	$ 380	$ 32,658	$ (74,259)	$ 10,507	$ (159,971)	$ (24,178)	$ (10,505)	(7,216)	(184,147)	84,046
Net derivative gain (loss)									18,647	6,317	(11,599)
Corporate expenses									(27,231)	(23,254)	(23,421)
Interest, fee and bond issue cost amortization expense									(36,228)	(36,191)	(38,533)
Other income (expense)									(10,636)	88,280	32,308
INCOME (LOSS) BEFORE TAXES									1,099,844	1,111,890	1,386,808
Total income tax expense (benefit)									103,500	134,021	187,652
U.S. [Member]
Income Taxes [Line Items]
Underwriting gain (loss)									208,821	294,386	228,194
Net investment income									230,691	234,709	260,501
Net realized capital gains (losses)									(16,465)	(159,268)	78,006
Corporate expenses									8,276	7,179	7,252
Interest, fee and bond issue cost amortization expense									(35,435)	(35,434)	(37,970)
Other income (expense)									(5,536)	27,706	(1,561)
INCOME (LOSS) BEFORE TAXES									373,801	354,920	519,918
Expected tax provision at the applicable statutory rate(s)									130,830	124,221	181,972
Increase (decrease) in tax resulting from: Tax exempt income									(9,078)	(10,004)	(12,231)
Increase (decrease) in tax resulting from: Dividend received deduction									(4,913)	(5,364)	(5,910)
Increase (decrease) in tax resulting from: Proration									1,931	2,160	1,835
Increase (decrease) in tax resulting from: Tax audit settlement									(18,644)
Increase (decrease) in taxes resulting from: Other									1,840	8,197	(588)
Total income tax expense (benefit)									101,966	119,210	165,077
Non-U.S. [Member]
Income Taxes [Line Items]
Underwriting gain (loss)									480,602	493,025	585,327
Net investment income									242,393	238,763	269,985
Net realized capital gains (losses)									9,249	(24,879)	6,040
Net derivative gain (loss)									18,647	6,317	(11,599)
Corporate expenses									18,955	16,075	16,169
Interest, fee and bond issue cost amortization expense									(793)	(756)	(563)
Other income (expense)									(5,101)	60,574	38,869
INCOME (LOSS) BEFORE TAXES									726,043	756,970	866,890
Expected tax provision at the applicable statutory rate(s)									2,387	14,848	21,279
Increase (decrease) in taxes resulting from: Other									(853)	(37)	1,296
Total income tax expense (benefit)									1,534	14,811	22,575
Parent Company [Member]
Income Taxes [Line Items]
Net investment income									879	3,895	824
Net realized capital gains (losses)									144	(3,057)	15
Interest, fee and bond issue cost amortization expense									(4,300)	(4,300)
Other income (expense)									5,022	7,809	5,568
INCOME (LOSS) BEFORE TAXES									996,344	977,869	1,199,156
Total income tax expense (benefit)

Income Taxes (Net Deferred Inco

Income Taxes (Net Deferred Income Tax Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Abstract]
Loss reserve	$ 104,547	$ 169,771
Unearned premium reserve	37,573	40,624
Net unrecognized losses on benefit plans	35,271	33,971
Benefit plan liability	14,576	18,747
Net operating loss carryforward	6,341	3,412
Unrealized foreign currency losses	27,410
Uncollectible reinsurance reserve	5,534	5,534
Investment impairments	3,093	23,481
Deferred expenses	2,884	3,182
Foreign tax credits	0	11,836
Alternative minimum tax credits		7,604
Other assets	14,843	16,347
Total deferred tax assets	252,071	334,509
Net fair value income	78,740	80,268
Deferred acquisition costs	26,652	33,227
Net unrealized investment gains	20,698	7,491
Partnership investments	11,912	6,006
Gain on tender of debt	10,958	16,437
Unrealized foreign currency gains		3,778
Other liabilities	3,086	5,860
Total deferred tax liabilities	152,045	153,067
Net deferred tax assets	100,026	181,442
Less: Valuation allowance	(3,846)	(3,412)
Total net deferred tax assets	$ 96,181	$ 178,030

Reinsurance (Details)

Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reinsurance [Abstract]
Written premiums: Direct									$ 1,819,588	$ 1,569,791	$ 1,227,645
Written premiums: Assumed									4,214,286	4,321,922	4,535,231
Written premiums: Ceded									(762,969)	(709,402)	(630,446)
Net written premiums	$ 1,369,851	$ 1,564,644	$ 1,154,953	$ 1,181,457	$ 1,321,949	$ 1,500,355	$ 1,135,718	$ 1,224,289	5,270,905	5,182,311	5,132,430
Premiums earned: Direct									1,694,702	1,491,163	1,183,498
Premiums earned: Assumed									4,361,944	4,500,526	4,419,322
Premium earned: Ceded									(736,180)	(698,847)	(559,113)
Net premiums earned	$ 1,441,265	$ 1,371,474	$ 1,288,860	$ 1,218,867	$ 1,372,235	$ 1,362,864	$ 1,285,255	$ 1,272,488	5,320,466	5,292,842	5,043,707
Incurred losses and LAE: Direct									1,496,455	1,268,896	1,100,037
Incurred losses and LAE: Assumed									2,121,902	2,152,633	2,160,663
Incurred losses and LAE: Ceded									(478,728)	(356,814)	(384,764)
Net incurred losses and LAE									$ 3,139,629	$ 3,064,715	$ 2,875,936

Comprehensive Income (Loss) (Co

Comprehensive Income (Loss) (Components Of Comprehensive Income (Loss) In The Consolidated Statements Of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Comprehensive Income (Loss) [Abstract]
Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary, Before Tax	$ 65,645	$ (333,657)	$ (4,278)
URA (D) on securities - OTTI, Before Tax	7,734	8,411	(10,078)
Reclassification on net realized losses (gains) included in net income (loss), Before Tax	23,232	131,211	34,668
Foreign currency translation adjustments, Before Tax	(53,802)	(140,918)	(111,145)
Benefit plan actuarial net gain (loss), Before Tax	(11,520)	8,740	(60,169)
Reclassification of benefit plan liability amortization included in net income (loss), Before Tax	7,805	9,563	4,647
Total other comprehensive income (loss), Before Tax	39,094	(316,650)	(146,355)
Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary, Tax Effect	(13,961)	54,502	11,653
URA (D) on securities - OTTI, Tax Effect	(1,789)	(3,383)	3,407
Reclassification of net realized losses (gains) included in net income (loss), Tax Effect	(8,114)	(37,523)	(13,276)
Foreign currency translation adjustments, Tax Effect	(1,539)	29,388	15,728
Benefit plan actuarial net gain (loss), Tax Effect	4,032	(3,059)	21,059
Reclassification of benefit plan liability amortization included in net income (loss), Tax Effect	(2,732)	(3,347)	(1,627)
Total other comprehensive income (loss), Tax Effect	(24,103)	36,578	36,944
Unrealized appreciation (depreciation) ("URA(D)") on securities - temporary, Net of Tax	51,684	(279,155)	7,375
URA (D) on securities - OTTI, Net of Tax	5,945	5,028	(6,671)
Reclassification on net realized losses (gains) included in net income (loss), Net of Tax	15,118	93,688	21,392
Foreign currency translation adjustments, Net of Tax	(55,341)	(111,530)	(95,417)
Benefit plan actuarial net gain (loss), Net of Tax	(7,488)	5,681	(39,110)
Reclassification of benefit plan liability amortization included in net income (loss), Net of Tax	5,073	6,216	3,020
Total other comprehensive income (loss), net of tax	$ 14,991	$ (280,072)	$ (109,411)

Comprehensive Income (Loss) (Re

Comprehensive Income (Loss) (Reclassified From Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net realized capital gains (losses)									$ 24,379	$ (81,948)	$ 123,548
Other underwriting expenses									302,722	257,069	233,104
Income tax expense (benefit)									103,500	134,021	187,652
NET INCOME (LOSS)	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	996,344	977,869	1,199,156
Parent Company [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income tax expense (benefit)
NET INCOME (LOSS)									996,344	977,869	$ 1,199,156
URA(D) On Securities [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other net realized capital gains (losses)									23,232	131,211
Income tax expense (benefit)									(8,114)	(37,523)
NET INCOME (LOSS)									15,118	93,688
Benefit Plan Liabilities [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other underwriting expenses									7,805	9,563
Income tax expense (benefit)									(2,732)	(3,347)
NET INCOME (LOSS)									$ 5,073	$ 6,216

Comprehensive Income (Loss) 100

Comprehensive Income (Loss) (Components Of Accumulated Other Comprehensive Income (Loss), Net Of Tax, In The Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Comprehensive Income (Loss) [Abstract]
Beginning balance of URA (D) on securities	$ 42,811	$ 223,250
Current period change in URA(D) of investments - temporary	66,802	(185,467)
Current period change in URA (D) of investments - non-credit OTTI	5,945	5,028
Ending balance of URA (D) on securities	115,558	42,811	$ 223,250
Beginning balance of foreign currency translation adjustments	(211,477)	(99,947)
Current period change in foreign currency translation adjustments	(55,341)	(111,530)
Ending balance of foreign currency translation adjustments	(266,818)	(211,477)	(99,947)
Beginning balance of benefit plan net gain (loss)	(63,089)	(74,986)
Current period change in benefit plan net gain (loss)	(2,415)	11,897	(36,090)
Ending balance of benefit plan net gain (loss)	(65,504)	(63,089)	$ (74,986)
Ending balance of accumulated other comprehensive income (loss)	$ (216,764)	$ (231,755)

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Estimated transition obligation amortized from accumulated other comprehensive income into net public benefit cost over the next year	$ 0
Estimated actuarial loss amortized from accumulated other comprehensive income into net periodic benefit cost over the next year	8,758
Estimated prior service cost amortized from accumulated other comprehensive income into net periodic benefit cost over the next year	$ 0
Weighted average discount rate used to determine net periodic benefit cost	4.38%	4.00%	5.00%
Rate of compensation increase to determine the net periodic benefit cost	4.00%	4.00%	4.00%
Expected long-term rate of return on plan assets	7.50%	7.50%	7.50%
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation	4.16%	4.38%	4.00%
Private equity limited partnerships	$ 12,909	$ 11,338
Defined contribution plans, employer contribution plans, employer contribution percentage, maximum	3.00%
Defined contribution plans, employer contribution percentage, for new hires, minimum	3.00%
Defined contribution plans, employer contribution percentage, for new hires, maximum	8.00%
Vested contribution after three years, percentage	100.00%
Defined contribution plans vesting period, years	3 years
Defined contribution plan employer contribution percentage for branch offices, minimum	5.00%
Defined contribution plan employer contribution percentage for branch offices, maximum	19.70%
Company contributions	$ 30,821	$ 5,949	$ 16,484
Pre-Medicare Claims [Member]
Defined Benefit Plan Disclosure [Line Items]
Healthcare inflation rate	6.70%
Healthcare inflation rate decreased	4.50%
Post-Medicare Claims [Member]
Defined Benefit Plan Disclosure [Line Items]
Healthcare inflation rate	6.20%
Healthcare inflation rate decreased	4.50%
Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	78.00%
Fixed Maturities [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	13.00%
Limited Partnerships [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	7.00%
Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Plan assets consist of shares in investment trusts, percentage	2.00%
Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentage	70.00%
Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation percentage	30.00%
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated transition obligation amortized from accumulated other comprehensive income into net public benefit cost over the next year	$ 0
Estimated actuarial loss amortized from accumulated other comprehensive income into net periodic benefit cost over the next year	132
Estimated prior service cost amortized from accumulated other comprehensive income into net periodic benefit cost over the next year	$ (131)
Weighted average discount rate used to determine net periodic benefit cost	4.38%	4.00%	5.00%
Weighted average discount rates used to determine actuarial present value of the projected benefit obligation	4.16%	4.38%	4.00%
Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 30,000
Healthcare inflation rate	7.50%
Benefit Obligations [Member] | Pre-Medicare Claims [Member]
Defined Benefit Plan Disclosure [Line Items]
Healthcare inflation rate	7.50%
Benefit Obligations [Member] | Post-Medicare Claims [Member]
Defined Benefit Plan Disclosure [Line Items]
Healthcare inflation rate decreased	4.50%

Employee Benefit Plans (Summary

Employee Benefit Plans (Summary Of Contributions To Defined Benefit Pension Plans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Benefit Plans [Abstract]
Company contributions	$ 30,821	$ 5,949	$ 16,484

Employee Benefit Plans (Summ103

Employee Benefit Plans (Summary Of Pension Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Benefit Plans [Abstract]
Pension expense	$ 17,188	$ 22,682	$ 18,543

Employee Benefit Plans (Summ104

Employee Benefit Plans (Summary Of Status Of Plan) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	$ 254,022	$ 270,065
Service cost	10,924	12,511	$ 10,015
Interest cost	9,485	10,759	10,474
Actuarial (gain)/loss	12,155	(18,595)
Benefits paid	(4,733)	(20,718)
Projected benefit obligation at end of year	281,853	254,022	270,065
Balance, beginning of period	135,087	157,090
Actual return on plan assets	10,331	(7,234)
Actual contributions during the year	30,821	5,949
Benefits paid	(4,733)	(20,718)
Balance, end of period	171,506	135,087	157,090
Funded status at end of year	(110,348)	(118,936)
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	31,687	36,506
Service cost	1,418	1,794	1,619
Interest cost	1,007	1,187	1,320
Amendments	(794)
Actuarial (gain)/loss	(668)	(7,231)
Benefits paid	579	568
Projected benefit obligation at end of year	32,071	31,687	36,506
Balance, beginning of period
Actual contributions during the year	579	568
Benefits paid	(579)	(568)
Balance, end of period
Funded status at end of year	$ (32,071)	$ (31,687)

Employee Benefit Plans (Amounts

Employee Benefit Plans (Amounts Recognized In The Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets (due beyond one year)
Other liabilities (due within one year)	(2,371)	(1,869)
Other liabilities (due beyond one year)	(107,977)	(117,067)
Net amount recognized in the consolidated balance sheets	(110,348)	(118,936)
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other liabilities (due within one year)	(614)	(654)
Other liabilities (due beyond one year)	(31,457)	(31,033)
Net amount recognized in the consolidated balance sheets	$ (32,071)	$ (31,687)

Employee Benefit Plans (Amou106

Employee Benefit Plans (Amounts Not Yet Reflected In Net Periodic Benefit Cost And Included In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated prior service credit (cost)
Accumulated income (loss)	(96,965)	(91,920)
Accumulated other comprehensive income (loss)	(96,965)	(91,920)	$ (102,692)
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated prior service credit (cost)	662
Accumulated income (loss)	(4,471)	(5,139)
Accumulated other comprehensive income (loss)	$ (3,809)	$ (5,139)	$ (12,670)

Employee Benefit Plans (Other C

Employee Benefit Plans (Other Changes In Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other comprehensive income (loss) at December 31, prior year	$ (91,920)	$ (102,692)
Net gain (loss) arising during period	(12,982)	(259)
Actuarial loss (gain)	7,937	11,011
Prior service cost		21
Other comprehensive income (loss) at December 31, current year	(96,965)	(91,920)
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other comprehensive income (loss) at December 31, prior year	(5,139)	(12,670)
Net gain (loss) arising during period	668	7,231
Prior Service credit (cost) arising during period	794
Actuarial loss (gain)		300
Prior service cost	(132)
Other comprehensive income (loss) at December 31, current year	$ (3,809)	$ (5,139)

Employee Benefit Plans (Net Per

Employee Benefit Plans (Net Periodic Benefit Cost For U.S. Employees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Amortization of unrecognized prior service cost	$ 0
Net periodic benefit cost	17,188	$ 22,682	$ 18,543
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	10,924	12,511	10,015
Interest cost	9,485	10,759	10,474
Expected return on plan assets	(11,158)	(11,620)	(11,288)
Amortization of actuarial loss from earlier periods	7,937	9,243	4,341
Amortization of unrecognized prior service cost		21	49
Settlement		1,768	4,953
Net periodic benefit cost	17,188	22,682	18,543
Other comprehensive income (loss) attributable to change from prior year	5,045	(10,773)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	22,233	11,909
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1,418	1,794	1,619
Interest cost	1,007	1,187	1,320
Amortization of unrecognized prior service cost	(131)
Settlement	(132)	300	257
Net periodic benefit cost	2,293	3,280	$ 3,196
Other comprehensive income (loss) attributable to change from prior year	(1,330)	(7,531)
Total recognized in net periodic benefit cost and other comprehensive income (loss)	$ 963	$ (4,251)

Employee Benefit Plans (Summ109

Employee Benefit Plans (Summary Of Accumulated Benefit Obligation) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 232,843	$ 206,458
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	211,720	188,702
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 21,123	$ 17,756

Employee Benefit Plans (Project

Employee Benefit Plans (Projected Benefit Obligations In Excess Of Plan Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 254,320	$ 229,719
Fair value of plan assets	171,506	135,087
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	27,534	24,303
Fair value of plan assets

Employee Benefit Plans (Accumul

Employee Benefit Plans (Accumulated Benefit Obligations In Excess Of Plan Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 211,720	$ 188,702
Fair value of plan assets	171,506	135,087
Non-Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	21,123	17,756
Fair value of plan assets

Employee Benefit Plans (Expecte

Employee Benefit Plans (Expected Benefit Payments) (Details) $ in Thousands	Dec. 31, 2016USD ($)
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	$ 614
2,018	706
2,019	824
2,020	951
2,021	1,071
Next 5 years	7,804
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
2,017	7,926
2,018	10,069
2,019	12,993
2,020	10,732
2,021	12,936
Next 5 years	$ 72,113

Employee Benefit Plans (Fair Va

Employee Benefit Plans (Fair Value Measurement Levels For Qualified Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value	$ 3,665	$ 4,034
Multi-strategy equity fund, fair value	11,274	10,673
Total	$ 158,597	$ 123,749
Percent of fixed income funds in US securities	50.00%	50.00%
Percent of fixed income funds in international securities	50.00%	50.00%
Percent of equities mutual funds in US equities	90.00%	90.00%
Percent of equities mutual funds in international equities	10.00%	10.00%
Cash Managed By Employee Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash
Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	21,445	22,537
Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	122,213	86,505
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value	3,665	4,034
Multi-strategy equity fund, fair value
Total	147,323	113,076
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Cash Managed By Employee Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	21,445	22,537
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value	122,213	86,505
Significant Other Observable Inputs (Level 2) [Member]
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value
Multi-strategy equity fund, fair value
Total
Significant Other Observable Inputs (Level 2) [Member] | Cash Managed By Employee Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash
Significant Other Observable Inputs (Level 2) [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value
Significant Other Observable Inputs (Level 2) [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value
Significant Unobservable Inputs (Level 3) [Member]
Defined Benefit Plan Disclosure [Line Items]
Short-term investments, which approximates fair value
Multi-strategy equity fund, fair value	11,274	10,673
Total	11,274	10,673
Significant Unobservable Inputs (Level 3) [Member] | Cash Managed By Employee Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash
Significant Unobservable Inputs (Level 3) [Member] | Fixed Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value
Significant Unobservable Inputs (Level 3) [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Mutual funds, fair value

Employee Benefit Plans (Fair114

Employee Benefit Plans (Fair Value Measurements Using Significant Unobservable Inputs For Fixed Maturity Investments) (Details) - Significant Unobservable Inputs (Level 3) [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Balance, beginning of period	$ 10,673	$ 10,629
Realized gains (losses) relating to assets sold during the period	28	9
Unrealized gains (losses) relating to assets still held at the reporting date	517	12
Purchases and capital contributions		161
Investment income earned on assets	189
Sales and capital distributions	(134)	(138)
Transfers in and/or (out) of Level 3
Balance, end of period	11,274	10,673
The amount of total gains (losses) for the period included in changes in net assets attributable to the change in unrealized gains (losses) relating to assets still held at the reporting date	$ 489	$ 3

Employee Benefit Plans (Incurre

Employee Benefit Plans (Incurred Expenses Related To Defined Contribution Plans For U.S. Employees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Benefits and Share-based Compensation [Abstract]
Incurred expenses	$ 6,058	$ 5,468	$ 4,676

Employee Benefit Plans (Incu116

Employee Benefit Plans (Incurred Expenses Related To Defined Contribution Plans For Non-U.S. Employees) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Benefits and Share-based Compensation [Abstract]
Incurred expenses	$ 1,560	$ 1,423	$ 1,387

Employee Benefit Plans (Changes

Employee Benefit Plans (Changes In The Assumed Healthcare Cost Trend) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)
Employee Benefits and Share-based Compensation [Abstract]
Effect on total service and interest cost components, Percentage Point Increase	$ 541
Effect on total service and interest cost components, Percentage Point Decrease	(419)
Effect on accumulated post-retirement benefit obligation, Percentage Point Increase	6,622
Effect on accumulated post-retirement benefit obligation, Percentage Point Decrease	$ (5,158)

Employee Benefit Plans (Post-Re

Employee Benefit Plans (Post-Retirement Benefit Expenses) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Benefits Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Post-retirement benefit expenses	$ 2,293	$ 3,280	$ 3,196

Dividend Restrictions And St119

Dividend Restrictions And Statutory Financial Information (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Dividend Restrictions And Statutory Financial Information [Line Items]
Minimum solvency margin	$ 250
Prior approval of the Bermuda Monetary Authority is required for dividend payments, if percentage exceeds in prior-year end total statutory capital	25.00%
Dividend payment restrictions, period in months	12 months
Dividend payment restrictions, percentage of statutory surplus required	10.00%
Available for payment of dividends in 2016 without need for prior regulatory approval	$ 523,547
Target capital level, percent of the enhanced capital requirement	120.00%
Minimum percent of total adjusted capital	200.00%
Everest Re [Member]
Dividend Restrictions And Statutory Financial Information [Line Items]
Statutory capital and surplus	$ 3,635,121	$ 3,210,891
Statutory net income(loss)	523,547	498,455	$ 357,298
Bermuda Re [Member]
Dividend Restrictions And Statutory Financial Information [Line Items]
Statutory capital and surplus	2,702,624	2,632,411
Statutory net income(loss)	$ 682,876	$ 621,643	$ 698,834

Dividend Restrictions And St120

Dividend Restrictions And Statutory Financial Information (Regulatory Targeted Capital And The Actual Statutory Capital) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum Percent Of Total Adjusted Capital		200.00%
Everest Re [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Regulatory targeted capital	[1]	$ 1,411,440	$ 1,355,668
Actual capital	[1]	3,635,121	3,210,891
Bermuda Re [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Regulatory targeted capital	[2],[3]		2,079,005
Actual capital	[2],[3]	$ 2,702,624	$ 2,632,411
[1]	Regulatory targeted capital represents 200% of the RBC authorized control level calculation for the applicable year.
[2]	Regulatory targeted capital represents the target capital level from the applicable year's BSCR calculation.
[3]	The 2016 BSCR calculation is not yet due to be completed; however, the Company anticipates that Bermuda Re's December 31, 2016 actual capital will exceed the targeted capital level.

Commitments And Contingencie121

Commitments And Contingencies (Summary Of Estimated Cost To Replace Annuities For Contingent Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
The Prudential [Member]
Loss Contingencies [Line Items]
Estimated cost to replace annuities	$ 146,507	$ 142,427
Unaffiliated Life Insurance Company [Member]
Loss Contingencies [Line Items]
Estimated cost to replace annuities	$ 33,860	$ 33,062

Share-Based Compensation Pla122

Share-Based Compensation Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	Nov. 16, 2016	Sep. 08, 2016	May 18, 2016	Feb. 24, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, authorized					200,000,000	200,000,000
Vesting period, years					3 years
Share units					0	0	0
Share-based compensation expense					$ 26,398	$ 21,237	$ 21,196
Expiration period, in years					10 years
Income tax benefit recorded					$ 6,898	4,870	5,819
Additional paid-in capital due to tax benefit from dividends on restricted shares					597	446	401
Aggregate intrinsic value of options exercised					19,876	21,434	21,202
Cash received from the exercised share options					16,408
Tax benefit realized from the options exercised					6,480
Unrecognized compensation cost					51,511
Tax benefit from stock options vested					8,061
Fair value of shares vested					$ 27,427	17,464	12,797
Unrecognized compensation cost expected to be recognized over a weighted-average period, years					3 years 1 month 6 days
Aggregate value of issuances					$ 103	$ 75	$ 75
Employee Plans, 1995 And 2002 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units					0
2010 Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, authorized					4,000,000
Remaining shares					2,629,771
Percentage of options and restricted shares granted					20.00%
Vesting period, years					5 years
2009 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, authorized					37,439
Remaining shares					34,957
2003 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, authorized					500,000
Remaining shares					362,714
Percentage of options and restricted shares granted					33.00%
Vesting period, years					3 years
1995 Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years					2 years
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares issued					1,997,372
Restricted shares cancelled					258,587
Non-Employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares, issued					547	426	476
Restricted shares issued					129,817
Restricted shares cancelled					0
Common stock acquired					70,010	82,277	82,490
Common stock, value					$ 12,111	$ 14,666	$ 12,738
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant-date fair value of options granted	$ 212.120	$ 194.165	$ 182.095	$ 186.015
Share units	173,546	173,546	173,546	173,546	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 212.120	$ 194.165	$ 182.095	$ 186.015
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share units				11,130
Share-based compensation awards, exercise price				$ 186.015
Performance Shares [Member] | 2010 Employee Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of options and restricted shares granted					100.00%
Vesting period, years					3 years
Performance Shares [Member] | 2010 Employee Plan [Member] | Growth In Book Value [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share unit valuation growth, percentage					50.00%
Performance Shares [Member] | 2010 Employee Plan [Member] | Operating Return on Equity [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period, years					3 years
Performance share unit valuation growth, percentage					50.00%
Performance Shares [Member] | 2010 Employee Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of stock per unit awarded					1.75
Performance Shares [Member] | 2010 Employee Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of stock per unit awarded					0

Share-Based Compensation Pla123

Share-Based Compensation Plans (Company's Shareholder Approved Plans) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-Based Compensation Plans [Abstract]
Outstanding at January 1, Shares	648,034	888,184	1,190,544
Exercised, Shares	187,940	230,350	286,120
Forfeited/Cancelled/Expired, Shares	5,100	9,800	16,240
Outstanding at December 31, Shares	454,994	648,034	888,184
Exercisable at December 31, Shares	410,694	495,334	562,684
Outstanding at January 1, Weighted-Average Exercise Price/Share	$ 85.61	$ 86.05	$ 85.44
Exercised, Weighted- Average Exercise Price/Share	87.31	87.21	83.53
Forfeited/Cancelled/Expired, Weighted- Average Exercise Price/Share	88.25	87.68	85.73
Outstanding at December 31, Weighted-Average Exercise Price/Share	84.88	85.61	86.05
Exercisable at December 31, Weighted-Average Exercise Price/Share	$ 84.50	$ 84.94	$ 85.41
Outstanding at December 31, Weighted-Average Remaining Contractual Term	3 years 8 months 12 days	4 years 6 months	5 years 2 months 12 days
Exercisable at December 31, Weighted-Average Remaining Contractual Term	3 years 6 months	4 years 1 month 6 days	4 years 6 months
Outstanding at December 31, Average Intrinsic Value	$ 59,843	$ 64,352	$ 76,485
Exercisable at December 31, Average Intrinsic Value	$ 54,169	$ 49,517	$ 48,812

Share-Based Compensation Pla124

Share-Based Compensation Plans (Share Options Outstanding And Exercisable) (Details)	12 Months Ended
	Dec. 31, 2016$ / sharesshares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Number Outstanding | shares	454,994
Options Outstanding, Weighted Average-Remaining Contractual Life	3 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 84.88
Options Exercisable, Number Exercisable | shares	410,694
Options Exercisable, Weighted-Average Exercise Price	$ 84.50
$71.7150 - $78.1700 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Ranges of Exercise Prices, Lower range limit	71.7150
Ranges of Exercise Prices, Upper range limit	$ 78.1700
Options Outstanding, Number Outstanding | shares	90,880
Options Outstanding, Weighted Average-Remaining Contractual Life	2 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 71.72
Options Exercisable, Number Exercisable | shares	90,880
Options Exercisable, Weighted-Average Exercise Price	$ 71.72
$78.1800 - $85.6300 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Ranges of Exercise Prices, Lower range limit	78.1800
Ranges of Exercise Prices, Upper range limit	$ 85.6300
Options Outstanding, Number Outstanding | shares	71,510
Options Outstanding, Weighted Average-Remaining Contractual Life	3 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 84.63
Options Exercisable, Number Exercisable | shares	71,510
Options Exercisable, Weighted-Average Exercise Price	$ 84.63
$85.6400 - $87.4700 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Ranges of Exercise Prices, Lower range limit	85.6400
Ranges of Exercise Prices, Upper range limit	$ 87.4700
Options Outstanding, Number Outstanding | shares	109,240
Options Outstanding, Weighted Average-Remaining Contractual Life	4 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 86.62
Options Exercisable, Number Exercisable | shares	109,240
Options Exercisable, Weighted-Average Exercise Price	$ 86.62
$87.4800 - $110.1300 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Ranges of Exercise Prices, Lower range limit	87.4800
Ranges of Exercise Prices, Upper range limit	$ 110.1300
Options Outstanding, Number Outstanding | shares	183,364
Options Outstanding, Weighted Average-Remaining Contractual Life	4 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 90.46
Options Exercisable, Number Exercisable | shares	139,064
Options Exercisable, Weighted-Average Exercise Price	$ 91.14

Share-Based Compensation Pla125

Share-Based Compensation Plans (Summary Of Company's Non-Vested Shares And Changes) (Details) - Restricted Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1, Shares	435,336	467,745	429,041
Granted - Shares	173,546	156,262	176,159
Vested, Shares	145,834	154,387	128,549
Forfeited, Shares	27,710	34,284	8,906
Outstanding at December 31, Shares	435,338	435,336	467,745
Outstanding at January 1, Weighted Average Grant Date Fair Value	$ 143.02	$ 120.84	$ 103.50
Granted, Weighted Average Grant Date Fair Value	186.37	178.80	147.44
Vested, Weighted Average Grant Date Fair Value	130.54	113.12	99.55
Forfeited, Weighted Average Grant Date Fair Value	147.32	138.19	118.82
Outstanding at December 31, Weighted Average Grant Date Fair Value	$ 164.21	$ 143.02	$ 120.84

Share-Based Compensation Pla126

Share-Based Compensation Plans (Company's Non-Vested Performance Share Unit Awards) (Details) - Performance Shares [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding at January 1, Shares	10,705
Granted - Shares	11,130	10,705
Vested, Shares
Forfeited, Shares
Outstanding at December 31, Shares	21,835	10,705
Outstanding at January 1, Weighted Average Grant Date Fair Value	$ 178.84
Granted, Weighted Average Grant Date Fair Value	186.02	178.84
Vested, Weighted Average Grant Date Fair Value
Forfeited, Weighted Average Grant Date Fair Value
Outstanding at December 31, Weighted Average Grant Date Fair Value	$ 182.50	$ 178.84

Segment Reporting (Schedule Of

Segment Reporting (Schedule Of Underwriting Results For Operating Segments) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Gross written premiums									$ 1,819,588	$ 1,569,791	$ 1,227,645
Net written premiums	$ 1,369,851	$ 1,564,644	$ 1,154,953	$ 1,181,457	$ 1,321,949	$ 1,500,355	$ 1,135,718	$ 1,224,289	5,270,905	5,182,311	5,132,430
Premiums earned	$ 1,441,265	$ 1,371,474	$ 1,288,860	$ 1,218,867	$ 1,372,235	$ 1,362,864	$ 1,285,255	$ 1,272,488	5,320,466	5,292,842	5,043,707
Incurred losses and LAE									3,139,629	3,064,715	2,875,936
Commission and brokerage									1,188,692	1,183,646	1,121,145
Other underwriting expenses									302,722	257,069	233,104
U.S. Reinsurance [Member]
Segment Reporting Information [Line Items]
Gross written premiums									2,125,792	2,147,892	2,154,530
Net written premiums									1,970,575	1,855,853	1,983,800
Premiums earned									2,072,155	1,952,680	1,986,769
Incurred losses and LAE									1,068,475	825,081	954,525
Commission and brokerage									465,953	493,261	466,291
Other underwriting expenses									54,107	50,087	45,583
Underwriting gain (loss)									483,620	584,251	520,370
International [Member]
Segment Reporting Information [Line Items]
Gross written premiums									1,230,683	1,334,206	1,603,566
Net written premiums									1,082,712	1,208,978	1,336,633
Premiums earned									1,119,121	1,251,111	1,310,903
Incurred losses and LAE									486,550	749,891	748,174
Commission and brokerage									283,447	298,180	306,229
Other underwriting expenses									35,512	34,303	34,598
Underwriting gain (loss)									313,612	168,737	221,902
Bermuda [Member]
Segment Reporting Information [Line Items]
Gross written premiums									890,375	877,328	786,408
Net written premiums									831,931	791,594	744,664
Premiums earned									837,964	822,391	715,736
Incurred losses and LAE									461,909	456,448	361,792
Commission and brokerage									233,989	215,992	198,848
Other underwriting expenses									36,331	36,017	34,923
Underwriting gain (loss)									105,735	113,934	120,173
Insurance [Member]
Segment Reporting Information [Line Items]
Gross written premiums									1,787,024	1,532,287	1,218,372
Net written premiums									1,385,687	1,325,886	1,067,333
Premiums earned									1,291,226	1,266,660	1,030,299
Incurred losses and LAE									1,122,695	1,033,295	811,445
Commission and brokerage									205,303	176,213	149,777
Other underwriting expenses									176,772	136,661	118,001
Underwriting gain (loss)									$ (213,544)	$ (79,509)	$ (48,924)

Segment Reporting (Schedule 128

Segment Reporting (Schedule Of Underwriting Results For Operating Segments To Income (Loss) Before Taxes) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net investment income	$ 115,167	$ 122,657	$ 132,737	$ 102,524	$ 110,514	$ 115,403	$ 124,990	$ 122,566	$ 473,085	$ 473,473	$ 530,485
Net realized capital gains (losses)	$ 34,005	$ 380	$ 32,658	$ (74,259)	$ 10,507	$ (159,971)	$ (24,178)	$ (10,505)	(7,216)	(184,147)	84,046
Net derivative gain (loss)									18,647	6,317	(11,599)
Corporate expenses									27,231	23,254	23,421
Interest, fee and bond issue cost amortization expense									(36,228)	(36,191)	(38,533)
Other income (expense)									(10,636)	88,280	32,308
INCOME (LOSS) BEFORE TAXES									1,099,844	1,111,890	1,386,808
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Underwriting gain (loss)									689,423	787,412	813,522
Net investment income									473,085	473,473	530,485
Net realized capital gains (losses)									(7,216)	(184,147)	84,046
Net derivative gain (loss)									18,647	6,317	(11,599)
Corporate expenses									27,231	23,254	23,421
Interest, fee and bond issue cost amortization expense									(36,228)	(36,191)	(38,533)
Other income (expense)									(10,636)	88,280	32,308
INCOME (LOSS) BEFORE TAXES									$ 1,099,844	$ 1,111,890	$ 1,386,808

Segment Reporting (Schedule 129

Segment Reporting (Schedule Of Gross Written Premiums Derived From Largest Non-U.S. Market) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Gross written premiums	$ 1,819,588	$ 1,569,791	$ 1,227,645
Percentage Threshold Of Company Revenue Not Exceeded By Any Other Country	19.40%	20.70%	22.70%
United Kingdom Gross Written Premium [Member]
Segment Reporting Information [Line Items]
Gross written premiums	$ 688,598	$ 740,763	$ 676,490

Dispositions (Narrative) (Detai

Dispositions (Narrative) (Details) - USD ($)	Aug. 24, 2016	Jul. 13, 2015
Liabilites retroceded, percentage		100.00%
Cash consideration		$ 140,279,000
Maximum liability retroceded		440,279,000
Total amount of liabilities retroceded		300,000,000
Heartland Crop [Member]
Proceeds from sale of business	$ 49,000,000
After-tax loss on sale	$ 12,942,000
Mt. Mckinley [Member]
Proceeds from sale of business		$ 20,156,000
Liabilites retroceded, percentage		100.00%
Cash consideration		$ 140,279,000
Maximum liability retroceded		440,279,000
Total amount of liabilities retroceded		300,000,000
A&E [Member]
Cash consideration		$ 100,451,000

Unaudited Quarterly Financia131

Unaudited Quarterly Financial Data (Summary Of Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Unaudited Quarterly Financial Data [Abstract]
Gross written premiums	$ 1,534,719	$ 1,782,616	$ 1,363,351	$ 1,353,189	$ 1,487,085	$ 1,724,943	$ 1,261,660	$ 1,418,025
Net written premiums	1,369,851	1,564,644	1,154,953	1,181,457	1,321,949	1,500,355	1,135,718	1,224,289	$ 5,270,905	$ 5,182,311	$ 5,132,430
Premiums earned	1,441,265	1,371,474	1,288,860	1,218,867	1,372,235	1,362,864	1,285,255	1,272,488	5,320,466	5,292,842	5,043,707
Net investment income	115,167	122,657	132,737	102,524	110,514	115,403	124,990	122,566	473,085	473,473	530,485
Net realized capital gains (losses)	34,005	380	32,658	(74,259)	10,507	(159,971)	(24,178)	(10,505)	(7,216)	(184,147)	84,046
Total claims and underwriting expenses	1,183,507	1,174,276	1,225,395	1,047,865	1,083,049	1,234,785	1,130,606	1,056,990	4,694,502	4,564,875	4,292,139
NET INCOME (LOSS)	373,572	295,394	155,692	171,686	357,281	88,553	209,057	322,978	996,344	977,869	1,199,156
Net income (loss)	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	$ 996,344	$ 977,869	$ 1,199,156
Basic	$ 9.14	$ 7.11	$ 3.70	$ 4.03	$ 8.32	$ 2.02	$ 4.72	$ 7.26	$ 23.85	$ 22.29	$ 26.16
Diluted	$ 9.08	$ 7.06	$ 3.67	$ 4	$ 8.26	$ 2	$ 4.68	$ 7.19	$ 23.68	$ 22.10	$ 25.91

Schedule I - Summary Of Inve132

Schedule I - Summary Of Investments - Other Than Investments In Related Parties (Details) $ in Thousands	Dec. 31, 2016USD ($)
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	$ 17,087,161
Total investments and cash, Market Value	17,483,089
Total investments and cash, Amount Shown in Balance Sheet	17,483,089
Total Fixed Maturities-Available For Sale [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	13,932,613
Total investments and cash, Market Value	14,107,408
Total investments and cash, Amount Shown in Balance Sheet	14,107,408
U.S. Treasury Securities And Obligations Of U.S. Government Agencies And Corporations [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	1,115,208
Total investments and cash, Market Value	1,130,315
Total investments and cash, Amount Shown in Balance Sheet	1,130,315
Obligations Of U.S. States And Political Subdivisions [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	723,938
Total investments and cash, Market Value	729,984
Total investments and cash, Amount Shown in Balance Sheet	729,984
Foreign Government Securities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	1,254,175
Total investments and cash, Market Value	1,258,160
Total investments and cash, Amount Shown in Balance Sheet	1,258,160
Foreign Corporate Securities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	2,565,710
Total investments and cash, Market Value	2,631,978
Total investments and cash, Amount Shown in Balance Sheet	2,631,978
Public Utilities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	272,946
Total investments and cash, Market Value	277,978
Total investments and cash, Amount Shown in Balance Sheet	277,978
All Other Corporate Bonds [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	5,255,468
Total investments and cash, Market Value	5,345,900
Total investments and cash, Amount Shown in Balance Sheet	5,345,900
Commercial Mortgage-Backed Securities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	308,827
Total investments and cash, Market Value	306,932
Total investments and cash, Amount Shown in Balance Sheet	306,932
Agency Residential [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	2,415,901
Total investments and cash, Market Value	2,405,469
Total investments and cash, Amount Shown in Balance Sheet	2,405,469
Non-Agency Residential [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	642
Total investments and cash, Market Value	641
Total investments and cash, Amount Shown in Balance Sheet	641
Redeemable Preferred Stock [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	19,798
Total investments and cash, Market Value	20,051
Total investments and cash, Amount Shown in Balance Sheet	20,051
Fixed Maturities - Available For Sale At Fair Value [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost		[1]
Total investments and cash, Market Value		[1]
Total investments and cash, Amount Shown in Balance Sheet		[1]
Equity Securities - Available For Sale At Market Value [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	129,553
Total investments and cash, Market Value	119,067
Total investments and cash, Amount Shown in Balance Sheet	119,067
Equity Securities - Available For Sale At Fair Value [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	778,526	[1]
Total investments and cash, Market Value	1,010,085	[1]
Total investments and cash, Amount Shown in Balance Sheet	1,010,085	[1]
Short-Term Investments And Cash [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	431,478
Total investments and cash, Market Value	431,478
Total investments and cash, Amount Shown in Balance Sheet	431,478
Other Invested Assets [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	1,333,069
Total investments and cash, Market Value	1,333,129
Total investments and cash, Amount Shown in Balance Sheet	1,333,129
Cash [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Total investments and cash, Cost	481,922
Total investments and cash, Market Value	481,922
Total investments and cash, Amount Shown in Balance Sheet	$ 481,922
[1]	Original cost does not reflect fair value adjustments, which have been realized through the statements of operations and comprehensive income (loss).

Schedule II - Condensed Fina133

Schedule II - Condensed Financial Information Of The Registrant (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Other assets	$ 263,459,000	$ 316,408,000
Other income (expense)	(10,636,000)	88,280,000	$ 32,308,000
Parent Company [Member]
Debt Instrument [Line Items]
Other assets	60,603,000	56,314,000
Other income (expense)	$ 5,022,000	7,809,000	5,568,000
Parent Company [Member] | Notes Payable [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			250,000,000
Maturity Date	Dec. 31, 2023
Debt instrument, stated interest rate	1.72%
Mt. Logan Re Segregated Accounts [Member] | Parent Company [Member]
Debt Instrument [Line Items]
Investments in preferred shares	$ 55,536,000	50,000,000
Other assets	58,955,000	55,673,000
Other income (expense)	$ 5,536,000	$ 8,268,000	$ 6,142,000

Schedule II - Condensed Fina134

Schedule II - Condensed Financial Information Of The Registrant (Condensed Balance Sheets) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Fixed maturities, market value	$ 14,107,408	$ 13,357,294
Short-term investments	431,478	799,684
Other invested assets	1,333,129	786,994
Cash	481,922	283,658
Accrued investment income	96,473	100,942
Other assets	263,459	316,408
TOTAL ASSETS	21,321,504	20,545,418
Long term note payable - Affiliated	236,462	236,364
Accrued interest and debt borrowings	3,537	3,537
Other liabilities	264,770	261,322
Total liabilities	13,246,108	12,936,833
Preferred shares, par value: $0.01; 50,000 shares authorized; no shares issued and outstanding
Common shares, par value: $0.01; 200,000 shares authorized; (2016) 68,871 and (2015) 68,606 issued before treasury shares	689	686
Additional paid-in capital	2,140,783	2,103,638
Accumulated other comprehensive income (loss), net of deferred income	(216,764)	(231,755)
Treasury shares, at cost; 27,972 shares (2016) and 25,912 shares (2015)	(3,272,244)	(2,885,956)
Retained earnings	9,422,932	8,621,972
Total shareholders' equity	8,075,396	7,608,585	$ 7,451,120
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	21,321,504	20,545,418
Fixed maturities - available for sale, at market value, amortized cost	13,932,613	13,276,206
Other invested assets, at cost	$ 1,333,069	$ 786,994
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common shares, authorized	200,000,000	200,000,000
Common shares, outstanding	68,871,000	68,606,000
Accumulated other comprehensive income (loss), deferred income tax expense (benefit)	$ 8,240	$ (15,863)
Treasury shares, at cost	27,972,000	25,912,000
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Fixed maturities, market value	$ 2,178	$ 78,282
Short-term investments		18,288
Other invested assets	145,036
Cash	2,034	740
Investment in subsidiaries, at equity in the underlying net assets	8,120,595	7,705,868
Accrued investment income	20	71
Receivable from subsidiaries	894	736
Other assets	60,603	56,314
TOTAL ASSETS	8,331,360	7,860,299
Long term note payable - Affiliated	250,000	250,000
Due to subsidiaries	1,020	1,068
Other liabilities	4,944	646
Total liabilities	255,964	251,714
Preferred shares, par value: $0.01; 50,000 shares authorized; no shares issued and outstanding	0	0
Common shares, par value: $0.01; 200,000 shares authorized; (2016) 68,871 and (2015) 68,606 issued before treasury shares	689	686
Additional paid-in capital	2,140,783	2,103,638
Accumulated other comprehensive income (loss), net of deferred income	(216,764)	(231,755)
Treasury shares, at cost; 27,972 shares (2016) and 25,912 shares (2015)	(3,272,244)	(2,885,956)
Retained earnings	9,422,932	8,621,972
Total shareholders' equity	8,075,396	7,608,585
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	8,331,360	7,860,299
Fixed maturities - available for sale, at market value, amortized cost	2,176	78,153
Other invested assets, at cost	$ 145,036	$ 0
Preferred shares, par value	$ 0.01	$ 0.01
Preferred shares, authorized	50,000,000	50,000,000
Preferred shares, issued	0	0
Preferred shares, outstanding	0	0
Common shares, par value	$ 0.01	$ 0.01
Common shares, authorized	200,000,000	200,000,000
Common shares, issued	68,871,000	68,606,000
Common shares, outstanding	0	68,606,000
Accumulated other comprehensive income (loss), deferred income tax expense (benefit)	$ 8,240	$ (15,863)
Treasury shares, at cost	27,972,000	25,912,000

Schedule II - Condensed Fina135

Schedule II - Condensed Financial Information Of The Registrant (Condensed Statements Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Net investment income	$ 115,167	$ 122,657	$ 132,737	$ 102,524	$ 110,514	$ 115,403	$ 124,990	$ 122,566	$ 473,085	$ 473,473	$ 530,485
Net realized capital gains (losses)	34,005	380	32,658	(74,259)	10,507	(159,971)	(24,178)	(10,505)	(7,216)	(184,147)	84,046
Other income (expense)									(10,636)	88,280	32,308
Total revenues									5,794,346	5,676,765	5,678,947
Interest expense - affiliated									36,228	36,191	38,533
Total expenses	1,183,507	1,174,276	1,225,395	1,047,865	1,083,049	1,234,785	1,130,606	1,056,990	4,694,502	4,564,875	4,292,139
INCOME (LOSS) BEFORE TAXES									1,099,844	1,111,890	1,386,808
Income tax expense (benefit)									103,500	134,021	187,652
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	996,344	977,869	1,199,156
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period									57,629	(274,127)	704
Reclassification adjustment for realized losses (gains) included in net income (loss)									(15,118)	(93,688)	(21,392)
Total URA(D) on securities arising during the period									72,747	(180,439)	22,096
Foreign currency translation adjustments									(55,341)	(111,530)	(95,417)
Benefit plan actuarial net gain (loss) for the period									(7,488)	5,681	(39,110)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)									5,073	6,216	3,020
Total benefit plan net gain (loss) for the period									(2,415)	11,897	(36,090)
Total other comprehensive income (loss), net of tax									14,991	(280,072)	(109,411)
COMPREHENSIVE INCOME (LOSS)									1,011,335	697,797	1,089,745
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Net investment income									879	3,895	824
Net realized capital gains (losses)									144	(3,057)	15
Other income (expense)									5,022	7,809	5,568
Net income (loss) of subsidiaries									1,012,315	989,462	1,208,192
Total revenues									1,018,360	998,109	1,214,599
Interest expense - affiliated									4,300	4,300
Other expenses									17,716	15,940	15,443
Total expenses									22,016	20,240	15,443
INCOME (LOSS) BEFORE TAXES									996,344	977,869	1,199,156
Income tax expense (benefit)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest									996,344	977,869	1,199,156
Unrealized appreciation (depreciation) ("URA(D)") on securities arising during the period									57,629	(274,127)	704
Reclassification adjustment for realized losses (gains) included in net income (loss)									(15,118)	(93,688)	(21,392)
Total URA(D) on securities arising during the period									72,747	(180,439)	22,096
Foreign currency translation adjustments									(55,341)	(111,530)	(95,417)
Benefit plan actuarial net gain (loss) for the period									(7,488)	5,681	(39,110)
Reclassification adjustment for amortization of net (gain) loss included in net income (loss)									5,073	6,216	3,020
Total benefit plan net gain (loss) for the period									(2,415)	11,897	(36,090)
Total other comprehensive income (loss), net of tax									14,991	(280,072)	(109,411)
COMPREHENSIVE INCOME (LOSS)									$ 1,011,335	$ 697,797	$ 1,089,745

Schedule II - Condensed Fina136

Schedule II - Condensed Financial Information Of The Registrant (Condensed Statements Of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
NET INCOME (LOSS)	$ 373,572	$ 295,394	$ 155,692	$ 171,686	$ 357,281	$ 88,553	$ 209,057	$ 322,978	$ 996,344	$ 977,869	$ 1,199,156
Change in other assets and liabilities, net									(56,204)	(8,934)	(142,635)
Amortization of bond premium (accrual of bond discount)									49,167	50,901	49,214
Realized capital losses (gains)	(34,005)	$ (380)	$ (32,658)	74,259	(10,507)	$ 159,971	$ 24,178	10,505	7,216	184,147	(84,046)
Non-cash compensation expense									26,398	21,237	21,197
Net cash provided by (used in) operating activities									1,373,005	1,096,634	1,054,762
Proceeds from fixed maturities sold - available for sale, at market value									1,258,434	1,724,093	1,811,801
Distributions from other invested assets									4,823,484	57,201	115,482
Cost of fixed maturities acquired - available for sale, at market value									(4,061,896)	(4,718,303)	(4,672,633)
Cost of other invested assets acquired									(5,396,001)	(286,599)	(224,740)
Net change in short-term investments									368,977	341,733	(76,483)
Net cash provided by (used in) investing activities									(657,873)	(681,101)	(758,572)
Common shares issued during the period, net									10,751	13,597	17,839
Purchase of treasury shares									(386,288)	(400,059)	(500,024)
Dividends paid to shareholders									(195,384)	(175,107)	(145,913)
Net cash provided by (used in) financing activities									(570,921)	(561,569)	(478,098)
EFFECT OF EXCHANGE RATE CHANGES ON CASH									54,053	(7,780)	8,000
Net increase (decrease) in cash									198,264	(153,816)	(173,908)
Cash, beginning of period				283,658				437,474	283,658	437,474	611,382
Cash, end of period	481,922				283,658				481,922	283,658	437,474
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
NET INCOME (LOSS)									996,344	977,869	1,199,156
Equity in retained (earnings) deficit of subsidiaries									(1,012,315)	(989,462)	(1,208,192)
Dividends received from subsidiaries									690,000	590,000	690,000
Change in other assets and liabilities, net									66	(7,626)	14,470
Increase (decrease) in due to/from affiliates									(206)	839	(2,520)
Amortization of bond premium (accrual of bond discount)									(56)	525	156
Realized capital losses (gains)									(144)	3,057	(15)
Non-cash compensation expense									2,311	1,841	1,828
Net cash provided by (used in) operating activities									676,000	577,043	694,883
Additional investment in subsidiaries									(77,324)	(60,600)	(73,873)
Proceeds from fixed maturities matured/called - available for sale, at market value									1,152	26,074	4,765
Proceeds from fixed maturities sold - available for sale, at market value									75,025	252,047	50,010
Distributions from other invested assets									757,399
Cost of fixed maturities acquired - available for sale, at market value										(532,480)	(49,994)
Cost of other invested assets acquired									(902,435)
Net change in short-term investments									18,288	279,462	(269,307)
Net cash provided by (used in) investing activities									(127,895)	(35,497)	(338,399)
Common shares issued during the period, net									34,861	32,962	37,208
Purchase of treasury shares									(386,288)	(400,059)	(500,024)
Proceeds from issuance of long term notes- affiliated											250,000
Dividends paid to shareholders									(195,384)	(175,107)	(145,913)
Net cash provided by (used in) financing activities									(546,811)	(542,204)	(358,729)
EFFECT OF EXCHANGE RATE CHANGES ON CASH
Net increase (decrease) in cash									1,294	(658)	(2,245)
Cash, beginning of period				$ 740				$ 1,398	740	1,398	3,643
Cash, end of period	$ 2,034				$ 740				$ 2,034	$ 740	$ 1,398

Schedule III - Supplementary137

Schedule III - Supplementary Insurance Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	$ 344,052	$ 372,351	$ 398,331
Reverse for Losses and Loss Adjustment Expenses	10,312,313	9,951,798	9,720,813
Unearned Premium Reserves	1,577,546	1,613,390	1,728,745
Premiums Earned	5,320,466	5,292,842	5,043,707
Net Investment Income	473,085	473,473	530,485
Incurred Loss and Loss Adjustment Expenses	3,139,629	3,064,715	2,875,936
Amortization of Deferred Acquisition Costs	1,188,692	1,183,646	1,121,145
Other Operating Expenses	302,722	257,069	233,104
Net Written Premium	5,270,905	5,182,311	5,132,430
U.S. [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	220,864	234,061	242,178
Reverse for Losses and Loss Adjustment Expenses	6,604,867	6,114,129	6,041,129
Unearned Premium Reserves	1,110,528	1,083,493	1,099,842
Premiums Earned	3,363,381	3,219,340	3,017,068
Net Investment Income	234,123	245,159	253,304
Incurred Loss and Loss Adjustment Expenses	2,191,170	1,858,376	1,765,970
Amortization of Deferred Acquisition Costs	671,256	669,474	616,068
Other Operating Expenses	230,879	186,748	163,584
Net Written Premium	3,356,262	3,181,739	3,051,133
International [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	52,014	61,217	69,050
Reverse for Losses and Loss Adjustment Expenses	1,748,380	1,819,700	1,785,695
Unearned Premium Reserves	237,120	273,677	347,352
Premiums Earned	1,119,121	1,251,111	1,310,903
Net Investment Income	33,059	34,181	40,262
Incurred Loss and Loss Adjustment Expenses	486,550	749,891	748,174
Amortization of Deferred Acquisition Costs	283,447	298,180	306,229
Other Operating Expenses	35,512	34,303	34,598
Net Written Premium	1,082,712	1,208,978	1,336,633
Bermuda [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred Acquisition Costs	71,174	77,074	87,103
Reverse for Losses and Loss Adjustment Expenses	1,959,065	2,017,970	1,893,989
Unearned Premium Reserves	229,898	256,220	281,551
Premiums Earned	837,964	822,391	715,736
Net Investment Income	205,902	194,133	236,920
Incurred Loss and Loss Adjustment Expenses	461,909	456,448	361,792
Amortization of Deferred Acquisition Costs	233,989	215,992	198,848
Other Operating Expenses	36,331	36,017	34,923
Net Written Premium	$ 831,931	$ 791,594	$ 744,664

Schedule IV - Reinsurance (Deta

Schedule IV - Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Gross Amount									$ 1,694,702	$ 1,491,163	$ 1,183,498
Ceded to Other Companies									736,180	698,847	559,113
Assumed from Other Companies									4,361,944	4,500,526	4,419,322
Net Amount	$ 1,441,265	$ 1,371,474	$ 1,288,860	$ 1,218,867	$ 1,372,235	$ 1,362,864	$ 1,285,255	$ 1,272,488	5,320,466	5,292,842	5,043,707
Total Property And Liability Insurance Premiums Earned [Member]
Reinsurance Premiums for Insurance Companies, by Product Segment [Line Items]
Gross Amount									1,694,702	1,491,163	1,183,498
Ceded to Other Companies									736,180	698,847	559,113
Assumed from Other Companies									4,361,944	4,500,526	4,419,322
Net Amount									$ 5,320,466	$ 5,292,842	$ 5,043,707
Assumed to Net	82.00%				85.00%				82.00%	85.00%	87.60%