$EG
EVEREST GROUP, LTD. Stock $eg

$eg Overview Financials Valuation SEC Filings Company Website

2020 Q4 Form 10-K Financial Statement

#000109507321000006 Filed on March 01, 2021

Income Statement

Concept	2020 Q4	2020 Q3	2020 Q1
Revenue	$222.3M	$2.610B	$1.982B
YoY Change	52.21%	27.79%	0.82%
Cost Of Revenue		$1.736B	$1.431B
YoY Change		26.55%	36.46%
Gross Profit		$874.0M	$551.2M
YoY Change		30.33%	-39.91%
Gross Profit Margin		33.48%	27.81%
Selling, General & Admin	$525.0M	$456.0M	$458.4M
YoY Change	13.98%	1.0%	15.73%
% of Gross Profit		52.18%	83.17%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses	$2.551B	$2.206B	$1.868B
YoY Change	28.37%	13.62%	21.01%
Operating Profit		-$1.332B	-$1.317B
YoY Change		4.81%	110.23%
Interest Expense	-$14.80M	$6.641M	$7.583M
YoY Change	92.21%	-16.01%	-0.63%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$119.4M	$272.5M	-$43.62M
YoY Change	-45.5%	192.96%	-110.52%
Income Tax	$57.30M	$29.45M	-$60.23M
% Of Pretax Income	47.99%	10.81%
Net Earnings	$63.60M	$243.1M	$16.61M
YoY Change	-70.78%	132.82%	-95.31%
Net Earnings / Revenue	28.6%	9.31%	0.84%
Basic Earnings Per Share	$1.59	$6.08	$0.41
Diluted Earnings Per Share	$1.59	$6.07	$0.41
COMMON SHARES
Basic Shares Outstanding	39.97M shares	39.48M shares	40.20M shares
Diluted Shares Outstanding		39.56M shares	40.30M shares

Balance Sheet

Concept	2020 Q4	2020 Q3	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$801.7M	$938.9M	$817.6M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$149.0M	$149.0M	$157.0M
YoY Change	-7.45%	152.54%	124.29%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$2.013B	$1.912B	$1.804B
YoY Change	14.12%	11.4%	9.72%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$32.71B	$30.15B	$27.22B
YoY Change	19.72%	11.58%	6.37%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$176.0M	$171.0M	$175.0M
YoY Change	1.73%	134.25%	105.88%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$50.00M
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$383.0M	$291.0M	$302.0M
YoY Change	87.75%	129.13%	54.08%
LONG-TERM LIABILITIES
Long-Term Debt	$1.910B	$711.0M	$632.0M
YoY Change	201.26%	12.15%	-0.32%
Other Long-Term Liabilities	$521.0M	$459.0M	$291.0M
YoY Change	52.79%	43.89%	148.72%
Total Long-Term Liabilities	$2.431B	$1.170B	$923.0M
YoY Change	149.33%	22.77%	22.9%
TOTAL LIABILITIES
Total Short-Term Liabilities	$383.0M	$291.0M	$302.0M
Total Long-Term Liabilities	$2.431B	$1.170B	$923.0M
Total Liabilities	$22.99B	$20.56B	$18.64B
YoY Change	26.35%	13.98%	8.36%
SHAREHOLDERS EQUITY
Retained Earnings	$10.57B	$10.57B	$10.26B
YoY Change	2.53%	4.07%	4.34%
Common Stock	$696.0K	$696.0K	$696.0K
YoY Change	0.29%	0.29%	0.29%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.622B	$3.622B	$3.622B
YoY Change	5.84%	5.84%	6.11%
Treasury Stock Shares	29.64M shares	29.64M shares	29.64M shares
Shareholders Equity	$9.726B	$9.591B	$8.581B
YoY Change
Total Liabilities & Shareholders Equity	$32.71B	$30.15B	$27.22B
YoY Change	19.72%	11.58%	6.37%

Cashflow Statement

Concept	2020 Q4	2020 Q3	2020 Q1
OPERATING ACTIVITIES
Net Income	$63.60M	$243.1M	$16.61M
YoY Change	-70.78%	132.82%	-95.31%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities	$683.0M	$1.086B	$506.0M
YoY Change	87.07%	71.46%	10.04%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$1.954B	-$1.100B	-$258.2M
YoY Change	873.64%	111.03%	-40.34%
Cash From Investing Activities	-$1.954B	-$1.100B	-$258.2M
YoY Change	873.64%	111.03%	-40.34%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$200.0M
YoY Change			1138.28%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	1.137B	26.20M	-$241.1M
YoY Change	-2004.36%	-145.17%	159.14%
NET CHANGE
Cash From Operating Activities	683.0M	1.086B	$506.0M
Cash From Investing Activities	-1.954B	-1.100B	-$258.2M
Cash From Financing Activities	1.137B	26.20M	-$241.1M
Net Change In Cash	-134.2M	11.90M	$9.590M
YoY Change	-228.18%	-77.96%	-113.3%
FREE CASH FLOW
Cash From Operating Activities	$683.0M	$1.086B	$506.0M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

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CY2020	dei	Entity Registrant Name EntityRegistrantName	EVEREST RE GROUP, LTD.
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CY2020Q4	us-gaap	Reinsurance Payable ReinsurancePayable	294347000	USD
CY2019Q4	us-gaap	Reinsurance Payable ReinsurancePayable	291660000	USD
CY2020Q4	re	Loss In Course Of Payment LossInCourseOfPayment	127971000	USD
CY2019Q4	re	Loss In Course Of Payment LossInCourseOfPayment	51950000	USD
CY2020Q4	us-gaap	Subordinated Debt SubordinatedDebt	223674000	USD
CY2019Q4	us-gaap	Subordinated Debt SubordinatedDebt	236758000	USD
CY2020Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	310000000	USD
CY2020Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	10460000	USD
CY2019Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	2878000	USD
CY2020Q4	us-gaap	Other Payables To Broker Dealers And Clearing Organizations OtherPayablesToBrokerDealersAndClearingOrganizations	206693000	USD
CY2019Q4	us-gaap	Other Payables To Broker Dealers And Clearing Organizations OtherPayablesToBrokerDealersAndClearingOrganizations	30650000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	558432000	USD
CY2019Q4	us-gaap	Other Liabilities OtherLiabilities	458848000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	23062181000	USD
CY2019Q4	us-gaap	Liabilities Liabilities	18191126000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	696000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	694000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2245301000	USD
CY2019Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	2219660000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	534899000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	28152000	USD
CY2020Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3622172000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3422152000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	10567452000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	10306571000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	9726176000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	9132925000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	32788357000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	27324051000	USD
CY2020	us-gaap	Premiums Earned Net PremiumsEarnedNet	8681513000	USD
CY2019	us-gaap	Premiums Earned Net PremiumsEarnedNet	7403686000	USD
CY2018	us-gaap	Premiums Earned Net PremiumsEarnedNet	6931699000	USD
CY2020	us-gaap	Net Investment Income NetInvestmentIncome	642465000	USD
CY2019	us-gaap	Net Investment Income NetInvestmentIncome	647139000	USD
CY2018	us-gaap	Net Investment Income NetInvestmentIncome	581183000	USD
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss Excluding Other Than Temporary Impairment DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment	-1745000	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	20899000	USD
CY2018	us-gaap	Impairment Of Investments ImpairmentOfInvestments	8110000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	269394000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	205903000	USD
CY2018	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-119026000	USD
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	267649000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	185004000	USD
CY2018	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-127136000	USD
CY2020	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	6487000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-4660000	USD
CY2018	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-24251000	USD
CY2020	us-gaap	Revenues Revenues	9598114000	USD
CY2019	us-gaap	Revenues Revenues	8231169000	USD
CY2018	us-gaap	Revenues Revenues	7361495000	USD
CY2020	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	6550837000	USD
CY2019	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	4922898000	USD
CY2018	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	5651403000	USD
CY2020	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	1873250000	USD
CY2019	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	1703726000	USD
CY2018	us-gaap	Selling And Marketing Expense SellingAndMarketingExpense	1519030000	USD
CY2020	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	511237000	USD
CY2019	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	440899000	USD
CY2018	us-gaap	Other Underwriting Expense OtherUnderwritingExpense	371541000	USD
CY2020	re	Corporate Expenses CorporateExpenses	41118000	USD
CY2019	re	Corporate Expenses CorporateExpenses	32966000	USD
CY2018	re	Corporate Expenses CorporateExpenses	30672000	USD
CY2020	re	Interest Fee And Bond Issue Cost Amortization Expense InterestFeeAndBondIssueCostAmortizationExpense	36323000	USD
CY2019	re	Interest Fee And Bond Issue Cost Amortization Expense InterestFeeAndBondIssueCostAmortizationExpense	31693000	USD
CY2018	re	Interest Fee And Bond Issue Cost Amortization Expense InterestFeeAndBondIssueCostAmortizationExpense	31031000	USD
CY2020	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	9012765000	USD
CY2019	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7132182000	USD
CY2018	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7603677000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	585349000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1098987000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-242182000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	71198000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89526000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-331223000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	514151000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1009461000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	89041000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	496430000	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-255656000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	12613000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-27496000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	419734000	USD
CY2020	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	404049000	USD
CY2019	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	521709000	USD
CY2018	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	542023000	USD
CY2020	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	-24163000	USD
CY2019	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	66477000	USD
CY2018	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	12276000	USD
CY2020	re	Increase Decrease In Losses In Course Of Payment IncreaseDecreaseInLossesInCourseOfPayment	74759000	USD
CY2019	re	Increase Decrease In Losses In Course Of Payment IncreaseDecreaseInLossesInCourseOfPayment	-33557000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	483817000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-228160000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	86327000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	14030000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-76816000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	5615000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	12591000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	510000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-6300000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-5453000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-5021000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-685000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	7138000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-4511000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	506746000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	490709000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-300465000	USD
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1020897000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1500170000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-211424000	USD
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	12.81
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.18
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	12.78
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.17
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	6.20
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	5.75
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	9726176000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	9132925000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	7860797000	USD
CY2020	us-gaap	Profit Loss ProfitLoss	514151000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1009461000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	89041000	USD
CY2020	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	387123000	USD
CY2019	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	62018000	USD
CY2018	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	382987000	USD
CY2020	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	219321000	USD
CY2019	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	56722000	USD
CY2018	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	153627000	USD
CY2020	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	150753000	USD
CY2019	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	-67444000	USD
CY2018	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	511592000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-239883000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-237479000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	265065000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	-55334000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	95207000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Reinsurance Premiums IncreaseDecreaseInPrepaidReinsurancePremiums	65925000	USD
CY2020	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	2627813000	USD
CY2019	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	402380000	USD
CY2018	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	1377711000	USD
CY2020	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	-4869000	USD
CY2019	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	-4186000	USD
CY2018	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	-4236000	USD
CY2019	re	Change In Equity Adjustments In Limited Partnerships ChangeInEquityAdjustmentsInLimitedPartnerships	108332000	USD
CY2020	re	Percentage Allocated To Common Shareholders PercentageAllocatedToCommonShareholders	0.987	pure
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39656	shares
CY2018	re	Increase Decrease In Losses In Course Of Payment IncreaseDecreaseInLossesInCourseOfPayment	123209000	USD
CY2020	re	Change In Equity Adjustments In Limited Partnerships ChangeInEquityAdjustmentsInLimitedPartnerships	103772000	USD
CY2018	re	Change In Equity Adjustments In Limited Partnerships ChangeInEquityAdjustmentsInLimitedPartnerships	102052000	USD
CY2020	us-gaap	Reimbursement From Limited Partnership Investment ReimbursementFromLimitedPartnershipInvestment	122326000	USD
CY2019	us-gaap	Reimbursement From Limited Partnership Investment ReimbursementFromLimitedPartnershipInvestment	81300000	USD
CY2018	us-gaap	Reimbursement From Limited Partnership Investment ReimbursementFromLimitedPartnershipInvestment	84623000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	95968000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	54176000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	322107000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	39209000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	34018000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	32369000	USD
CY2020	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	49673000	USD
CY2019	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	30936000	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	29272000	USD
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	267649000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	185004000	USD
CY2018	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-127136000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2873579000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1852002000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	610069000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2586405000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	2302299000	USD
CY2018	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1973652000	USD
CY2020	re	Proceeds From Sale Of Available For Sale Securities Debt Market Value ProceedsFromSaleOfAvailableForSaleSecuritiesDebtMarketValue	1945867000	USD
CY2019	re	Proceeds From Sale Of Available For Sale Securities Debt Market Value ProceedsFromSaleOfAvailableForSaleSecuritiesDebtMarketValue	3280237000	USD
CY2018	re	Proceeds From Sale Of Available For Sale Securities Debt Market Value ProceedsFromSaleOfAvailableForSaleSecuritiesDebtMarketValue	3148428000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	4907000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	2917000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1751000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	376347000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	283965000	USD
CY2018	us-gaap	Proceeds From Sale Of Available For Sale Securities Equity ProceedsFromSaleOfAvailableForSaleSecuritiesEquity	1199409000	USD
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	309912000	USD
CY2019	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	284558000	USD
CY2018	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	3102018000	USD
CY2020	re	Payments To Acquire Available For Sale Securities Debt Market Value PaymentsToAcquireAvailableForSaleSecuritiesDebtMarketValue	7189301000	USD
CY2019	re	Payments To Acquire Available For Sale Securities Debt Market Value PaymentsToAcquireAvailableForSaleSecuritiesDebtMarketValue	6613917000	USD
CY2018	re	Payments To Acquire Available For Sale Securities Debt Market Value PaymentsToAcquireAvailableForSaleSecuritiesDebtMarketValue	5909504000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4243000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	4381000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	637082000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	329417000	USD
CY2018	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	921937000	USD
CY2020	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	557473000	USD
CY2019	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	425438000	USD
CY2018	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	3370455000	USD
CY2020	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	717527000	USD
CY2019	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	167290000	USD
CY2018	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-455350000	USD
CY2020	re	Net Change In Unsettled Securities Transactions NetChangeInUnsettledSecuritiesTransactions	-194574000	USD
CY2019	re	Net Change In Unsettled Securities Transactions NetChangeInUnsettledSecuritiesTransactions	26163000	USD
CY2018	re	Net Change In Unsettled Securities Transactions NetChangeInUnsettledSecuritiesTransactions	-46048000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3683371000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1412492000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-279621000	USD
CY2020	re	Payments For Shares Issued For Share Based Compensation Net Of Expense PaymentsForSharesIssuedForShareBasedCompensationNetOfExpense	13566000	USD
CY2019	re	Payments For Shares Issued For Share Based Compensation Net Of Expense PaymentsForSharesIssuedForShareBasedCompensationNetOfExpense	3134000	USD
CY2018	re	Payments For Shares Issued For Share Based Compensation Net Of Expense PaymentsForSharesIssuedForShareBasedCompensationNetOfExpense	8157000	USD
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	200020000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	24604000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	75304000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	249097000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	234322000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	216221000	USD
CY2020	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	979417000	USD
CY2020	us-gaap	Repayments Of Debt RepaymentsOfDebt	10647000	USD
CY2020	re	Proceeds From Payments For Fhlbank Advance ProceedsFromPaymentsForFhlbankAdvance	310000000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	15908000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	13627000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	16912000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	800220000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-275687000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-316594000	USD
CY2020	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3187000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-11882000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	7174000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-6385000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	151941000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	21028000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	808036000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	656095000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	635067000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	801651000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	808036000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	656095000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-169748000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-148585000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-65064000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	28415000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	31689000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	30447000	USD
CY2018	re	Fixed Maturities Available For Sale At Market Value FixedMaturitiesAvailableForSaleAtMarketValue	143656000	USD
CY2018	re	Non Cash Transactions Short Term Investments NonCashTransactionsShortTermInvestments	243864000	USD
CY2018	re	Non Cash Investments Other Invested Assets NonCashInvestmentsOtherInvestedAssets	-387520000	USD
CY2020	re	Reinsurance Recoverable And Premium Receivables ReinsuranceRecoverableAndPremiumReceivables	41357000	USD
CY2019	re	Reinsurance Recoverable And Premium Receivables ReinsuranceRecoverableAndPremiumReceivables	25605000	USD
CY2020	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1873250000	USD
CY2019	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1703726000	USD
CY2018	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1519030000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	249056000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	234322000	USD
CY2020	re	Minimum Percent Of Prepaid Reinsurance Premiums For Any Foreign Reinsurers That Were Collateralized MinimumPercentOfPrepaidReinsurancePremiumsForAnyForeignReinsurersThatWereCollateralized	0.10	pure
CY2020	us-gaap	Profit Loss ProfitLoss	514151000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	1009461000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	89041000	USD
CY2018	us-gaap	Dividends Common Stock DividendsCommonStock	216221000	USD
CY2020	us-gaap	Undistributed Earnings UndistributedEarnings	265094000	USD
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	775139000	USD
CY2018	us-gaap	Undistributed Earnings UndistributedEarnings	-127180000	USD
CY2019	re	Percentage Allocated To Common Shareholders PercentageAllocatedToCommonShareholders	0.989	pure
CY2018	re	Percentage Allocated To Common Shareholders PercentageAllocatedToCommonShareholders	0.990	pure
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	261770000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	766386000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-125848000	USD
CY2020	re	Dividend Declared Common Shareholders DividendDeclaredCommonShareholders	246054000	USD
CY2019	re	Dividend Declared Common Shareholders DividendDeclaredCommonShareholders	231796000	USD
CY2018	re	Dividend Declared Common Shareholders DividendDeclaredCommonShareholders	214088000	USD
CY2020	re	Numerator For Basic And Diluted Earnings Per Common Share NumeratorForBasicAndDilutedEarningsPerCommonShare	507824000	USD
CY2019	re	Numerator For Basic And Diluted Earnings Per Common Share NumeratorForBasicAndDilutedEarningsPerCommonShare	998182000	USD
CY2018	re	Numerator For Basic And Diluted Earnings Per Common Share NumeratorForBasicAndDilutedEarningsPerCommonShare	88239000	USD
CY2020	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	39656	shares
CY2019	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	40291	shares
CY2018	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	40388	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	77	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	129	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	198	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39734	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40420	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40586	shares
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	12.81
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.18
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	12.78
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.17
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40291	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40388	shares
CY2020	re	Basic Weighted Average Common Shares Outstanding And Nonvested Common Shares Expected To Vest BasicWeightedAverageCommonSharesOutstandingAndNonvestedCommonSharesExpectedToVest	40160	shares
CY2019	re	Basic Weighted Average Common Shares Outstanding And Nonvested Common Shares Expected To Vest BasicWeightedAverageCommonSharesOutstandingAndNonvestedCommonSharesExpectedToVest	40751	shares
CY2018	re	Basic Weighted Average Common Shares Outstanding And Nonvested Common Shares Expected To Vest BasicWeightedAverageCommonSharesOutstandingAndNonvestedCommonSharesExpectedToVest	40816	shares
CY2020	re	Percentage Allocated To Common Shareholders PercentageAllocatedToCommonShareholders	0.987	pure
CY2019	re	Percentage Allocated To Common Shareholders PercentageAllocatedToCommonShareholders	0.989	pure
CY2018	re	Percentage Allocated To Common Shareholders PercentageAllocatedToCommonShareholders	0.990	pure
CY2020	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	69869000	USD
CY2018Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	77270000	USD
CY2020Q4	re	Available For Sale Securities Debt Securities Market Value AvailableForSaleSecuritiesDebtSecuritiesMarketValue	20040173000	USD
CY2019Q4	re	Available For Sale Securities Debt Securities Market Value AvailableForSaleSecuritiesDebtSecuritiesMarketValue	16824944000	USD
CY2020	re	Gross Investment Income Before Adjustment GrossInvestmentIncomeBeforeAdjustment	680703000	USD
CY2019	re	Gross Investment Income Before Adjustment GrossInvestmentIncomeBeforeAdjustment	677347000	USD
CY2018	re	Gross Investment Income Before Adjustment GrossInvestmentIncomeBeforeAdjustment	615802000	USD
CY2020	re	Funds Held Interest Income Expense FundsHeldInterestIncomeExpense	12754000	USD
CY2019	re	Funds Held Interest Income Expense FundsHeldInterestIncomeExpense	13271000	USD
CY2018	re	Funds Held Interest Income Expense FundsHeldInterestIncomeExpense	6300000	USD
CY2020	re	Future Policy Benefit Reserve Income Expense FuturePolicyBenefitReserveIncomeExpense	-1237000	USD
CY2019	re	Future Policy Benefit Reserve Income Expense FuturePolicyBenefitReserveIncomeExpense	-1380000	USD
CY2018	re	Future Policy Benefit Reserve Income Expense FuturePolicyBenefitReserveIncomeExpense	-1419000	USD
CY2020	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	692220000	USD
CY2019	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	689238000	USD
CY2018	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	620683000	USD
CY2020	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	49755000	USD
CY2019	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	42099000	USD
CY2018	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	39500000	USD
CY2020	us-gaap	Investment Income Net InvestmentIncomeNet	642465000	USD
CY2019	us-gaap	Investment Income Net InvestmentIncomeNet	647139000	USD
CY2018	us-gaap	Investment Income Net InvestmentIncomeNet	581183000	USD
CY2020Q4	re	Additional Contractual Commitments AdditionalContractualCommitments	1594446000	USD
CY2018Q3	re	Reclassification From Other Invested Assets To Fixed Maturity Securities ReclassificationFromOtherInvestedAssetsToFixedMaturitySecurities	143656000	USD
CY2018Q3	re	Reclassification Of Other Invested Assets To Short Term Investments ReclassificationOfOtherInvestedAssetsToShortTermInvestments	243864000	USD
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	267649000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	185004000	USD
CY2018	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-127136000	USD
CY2020	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded	32884000	USD
CY2020	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	6645000	USD
CY2020	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-5525000	USD
CY2020	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	-32259000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	1745000	USD
CY2020Q4	us-gaap	Asset Backed Securities At Carrying Value AssetBackedSecuritiesAtCarryingValue	1617928000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	13611313000	USD
CY2018Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	13119090000	USD
CY2017Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	11884321000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	1640712000	USD
CY2018Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	1619641000	USD
CY2017Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	1212649000	USD
CY2019Q4	re	Reserve For Losses And Loss Adjustment Expenses Net ReserveForLossesAndLossAdjustmentExpensesNet	11970601000	USD
CY2018Q4	re	Reserve For Losses And Loss Adjustment Expenses Net ReserveForLossesAndLossAdjustmentExpensesNet	11499449000	USD
CY2017Q4	re	Reserve For Losses And Loss Adjustment Expenses Net ReserveForLossesAndLossAdjustmentExpensesNet	10671672000	USD
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	6149410000	USD
CY2019	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	4986456000	USD
CY2018	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	5264327000	USD
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	401427000	USD
CY2019	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-63558000	USD
CY2018	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	387076000	USD
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	6550837000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	4922898000	USD
CY2018	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	5651403000	USD
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	2046260000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	2042246000	USD
CY2018	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	1700765000	USD
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	2080816000	USD
CY2019	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	2460825000	USD
CY2018	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	3011175000	USD
CY2020	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	4127076000	USD
CY2019	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	4503071000	USD
CY2018	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	4711940000	USD
CY2020	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	160944000	USD
CY2019	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	51325000	USD
CY2018	us-gaap	Translation Adjustment Functional To Reporting Currency Net Of Tax Period Increase Decrease TranslationAdjustmentFunctionalToReportingCurrencyNetOfTaxPeriodIncreaseDecrease	-111686000	USD
CY2020Q4	re	Reserve For Losses And Loss Adjustment Expenses Net ReserveForLossesAndLossAdjustmentExpensesNet	14555306000	USD
CY2019Q4	re	Reserve For Losses And Loss Adjustment Expenses Net ReserveForLossesAndLossAdjustmentExpensesNet	11970601000	USD
CY2018Q4	re	Reserve For Losses And Loss Adjustment Expenses Net ReserveForLossesAndLossAdjustmentExpensesNet	11499449000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	1843691000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	1640712000	USD
CY2018Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	1619641000	USD
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	16398997000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	13611313000	USD
CY2018Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	13119090000	USD
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	6149410000	USD
CY2019	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	4986456000	USD
CY2018	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	5264327000	USD
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	401427000	USD
CY2019	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-63558000	USD
CY2018	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	387076000	USD
CY2018	re	Causes Of Increase Decrease In Liability For Unpaid Claims And Claims Adjustment Expense Related To Reserves1 CausesOfIncreaseDecreaseInLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseRelatedToReserves1	174121000	USD
CY2020	us-gaap	Liability For Asbestos And Environmental Claims Net Payment For Claims LiabilityForAsbestosAndEnvironmentalClaimsNetPaymentForClaims	29674000	USD
CY2019	us-gaap	Liability For Asbestos And Environmental Claims Net Payment For Claims LiabilityForAsbestosAndEnvironmentalClaimsNetPaymentForClaims	32756000	USD
CY2018	us-gaap	Liability For Asbestos And Environmental Claims Net Payment For Claims LiabilityForAsbestosAndEnvironmentalClaimsNetPaymentForClaims	56624000	USD
CY2020Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	198255000	USD
CY2019Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	228701000	USD
CY2020Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Allocated Claim Adjustment Expense Net ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet	14322754000	USD
CY2020Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	1843691000	USD
CY2020Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	194111000	USD
CY2020Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem	38441000	USD
CY2020Q4	re	Short Duration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense ShortDurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	232552000	USD
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	16398997000	USD
CY2020	re	Number Of Exposure Groups NumberOfExposureGroups	200	Item
CY2020	re	Expiry Of Asbestos And Environmental Claims Receivables Years ExpiryOfAsbestosAndEnvironmentalClaimsReceivablesYears	P20Y
CY2019Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	257921000	USD
CY2018Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	347495000	USD
CY2017Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	448994000	USD
CY2020	re	Liability For Asbestos And Environmental Claims Gross Incurred Loss LiabilityForAsbestosAndEnvironmentalClaimsGrossIncurredLoss	1540000	USD
CY2019	re	Liability For Asbestos And Environmental Claims Gross Incurred Loss LiabilityForAsbestosAndEnvironmentalClaimsGrossIncurredLoss	2070000	USD
CY2018	re	Liability For Asbestos And Environmental Claims Gross Incurred Loss LiabilityForAsbestosAndEnvironmentalClaimsGrossIncurredLoss	-2473000	USD
CY2020	us-gaap	Liability For Asbestos And Environmental Claims Gross Payment For Claims LiabilityForAsbestosAndEnvironmentalClaimsGrossPaymentForClaims	40120000	USD
CY2019	us-gaap	Liability For Asbestos And Environmental Claims Gross Payment For Claims LiabilityForAsbestosAndEnvironmentalClaimsGrossPaymentForClaims	91644000	USD
CY2018	us-gaap	Liability For Asbestos And Environmental Claims Gross Payment For Claims LiabilityForAsbestosAndEnvironmentalClaimsGrossPaymentForClaims	99026000	USD
CY2020Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	219341000	USD
CY2019Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	257921000	USD
CY2018Q4	us-gaap	Liability For Asbestos And Environmental Claims Gross LiabilityForAsbestosAndEnvironmentalClaimsGross	347495000	USD
CY2019Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	228701000	USD
CY2018Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	261456000	USD
CY2017Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	318081000	USD
CY2020	us-gaap	Liability For Asbestos And Environmental Claims Net Incurred Loss1 LiabilityForAsbestosAndEnvironmentalClaimsNetIncurredLoss1	-772000	USD
CY2018Q4	us-gaap	Liability For Asbestos And Environmental Claims Net LiabilityForAsbestosAndEnvironmentalClaimsNet	261456000	USD
CY2015	re	Liabilities Retroceded Percentage LiabilitiesRetrocededPercentage	1	pure
CY2015	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	140279000	USD
CY2015Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities	440279000	USD
CY2015	re	Total Amount Of Liabilities Retroceded TotalAmountOfLiabilitiesRetroceded	300000000	USD
CY2019	re	Increase Decrease In Amount Of Liabilities Retroceded IncreaseDecreaseInAmountOfLiabilitiesRetroceded	-43362000	USD
CY2019Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities	450298000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1994555000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	1763471000	USD
CY2019Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	42592000	USD
CY2018Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	46778000	USD
CY2017Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	51014000	USD
CY2020	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	35000	USD
CY2019	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	53000	USD
CY2018	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	110000	USD
CY2020	us-gaap	Liability For Future Policy Benefits Period Increase Decrease LiabilityForFuturePolicyBenefitsPeriodIncreaseDecrease	-1113000	USD
CY2019	us-gaap	Liability For Future Policy Benefits Period Increase Decrease LiabilityForFuturePolicyBenefitsPeriodIncreaseDecrease	350000	USD
CY2018	us-gaap	Liability For Future Policy Benefits Period Increase Decrease LiabilityForFuturePolicyBenefitsPeriodIncreaseDecrease	806000	USD
CY2020	us-gaap	Liability For Future Policy Benefits Payment For Benefits LiabilityForFuturePolicyBenefitsPaymentForBenefits	3791000	USD
CY2019	us-gaap	Liability For Future Policy Benefits Payment For Benefits LiabilityForFuturePolicyBenefitsPaymentForBenefits	4589000	USD
CY2018	us-gaap	Liability For Future Policy Benefits Payment For Benefits LiabilityForFuturePolicyBenefitsPaymentForBenefits	5151000	USD
CY2020Q4	us-gaap	Liability For Future Policy Benefits LiabilityForFuturePolicyBenefits	37723000	USD
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CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	20971000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	20198000	USD
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CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	16956000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	124258000	USD
CY2020Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	220866000	USD
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CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	14420000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	6497000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-104809000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9376000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-32128000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	178523000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	80247000	USD
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CY2020	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-2516000	USD
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CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-97000	USD
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CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	80150000	USD
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CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	71198000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	89526000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-331223000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8434000	USD
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CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	8434000	USD
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CY2020Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	46109000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	2294000	USD
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CY2019Q4	re	Deferred Tax Assets Uncollectible Reinsurance DeferredTaxAssetsUncollectibleReinsurance	3142000	USD
CY2020Q4	re	Deferred Tax Assets Investment Impairments DeferredTaxAssetsInvestmentImpairments	1121000	USD
CY2019Q4	re	Deferred Tax Assets Investment Impairments DeferredTaxAssetsInvestmentImpairments	3961000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Unrealized Currency Losses DeferredTaxAssetsUnrealizedCurrencyLosses	7964000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	4520000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	442117000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	90268000	USD
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CY2020Q4	re	Deferred Tax Liabilities Fair Value Adjustments DeferredTaxLiabilitiesFairValueAdjustments	75692000	USD
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CY2020Q4	re	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	28822000	USD
CY2019Q4	re	Deferred Tax Liabilities Right Of Use Assets DeferredTaxLiabilitiesRightOfUseAssets	31510000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	26119000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	15039000	USD
CY2020Q4	re	Deferred Tax Liabilities Deferred Expense Compensation And Benefits Pensions DeferredTaxLiabilitiesDeferredExpenseCompensationAndBenefitsPensions	1765000	USD
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CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	6710000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	4937000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	309370000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	201099000	USD
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CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12997000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	960000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	228021000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	28805000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	12997000	USD
CY2018	us-gaap	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	-28411000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	17178000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	14190000	USD
CY2020	us-gaap	Direct Premiums Written DirectPremiumsWritten	3217999000	USD
CY2019	us-gaap	Ceded Premiums Earned CededPremiumsEarned	1207198000	USD
CY2018	us-gaap	Ceded Premiums Earned CededPremiumsEarned	1004953000	USD
CY2020	us-gaap	Premiums Earned Net PremiumsEarnedNet	8681513000	USD
CY2019	us-gaap	Premiums Earned Net PremiumsEarnedNet	7403686000	USD
CY2018	us-gaap	Premiums Earned Net PremiumsEarnedNet	6931699000	USD
CY2019	us-gaap	Direct Premiums Written DirectPremiumsWritten	2783036000	USD
CY2018	us-gaap	Direct Premiums Written DirectPremiumsWritten	2240951000	USD
CY2020	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	7264362000	USD
CY2019	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	6350328000	USD
CY2018	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	6234203000	USD
CY2020	us-gaap	Ceded Premiums Written CededPremiumsWritten	1365378000	USD
CY2019	us-gaap	Ceded Premiums Written CededPremiumsWritten	1308940000	USD
CY2018	us-gaap	Ceded Premiums Written CededPremiumsWritten	1060726000	USD
CY2020	us-gaap	Premiums Written Net PremiumsWrittenNet	9116983000	USD
CY2019	us-gaap	Premiums Written Net PremiumsWrittenNet	7824424000	USD
CY2020	us-gaap	Direct Premiums Earned DirectPremiumsEarned	3028095000	USD
CY2019	us-gaap	Direct Premiums Earned DirectPremiumsEarned	2551662000	USD
CY2018	us-gaap	Direct Premiums Earned DirectPremiumsEarned	2129320000	USD
CY2020	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	7054680000	USD
CY2019	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	6059222000	USD
CY2018	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	5807332000	USD
CY2020	us-gaap	Ceded Premiums Earned CededPremiumsEarned	1401262000	USD
CY2020	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	2141065000	USD
CY2019	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	1618686000	USD
CY2018	us-gaap	Policyholder Benefits And Claims Incurred Gross PolicyholderBenefitsAndClaimsIncurredGross	1372589000	USD
CY2020	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	5163946000	USD
CY2019	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Assumed ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountAssumed	3923298000	USD
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CY2020	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	754174000	USD
CY2019	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	619086000	USD
CY2018	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	768133000	USD
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CY2019	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	4922898000	USD
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CY2020	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	556201000	USD
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CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	51691000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	490709000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-329378000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-28913000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-300465000	USD
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CY2019Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	309970000	USD
CY2020Q4	us-gaap	Short Term Investments ShortTermInvestments	1204000	USD
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CY2019Q4	us-gaap	Short Term Investments ShortTermInvestments	1749000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	281116000	USD
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CY2020	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	39209000	USD
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CY2018	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	32369000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	7107000	USD
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CY2019	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	484000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	403000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	170704	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	87.18
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CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	17089000	USD
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	116871	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	87.87
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P0Y8M12D
CY2020Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	17089000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	279164	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	83.84
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	108460	shares
CY2019	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	78.58
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	170704	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	87.18
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y4M24D
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	32376000	USD
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	170704	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	87.18
CY2019	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y4M24D
CY2019Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	32376000	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	360364	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	84.10
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	81200	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	84.99
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	279164	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	83.84
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y10M24D
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	37386000	USD
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	279164	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	83.84
CY2018	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y10M24D
CY2018Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	37386000	USD
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Outstanding Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions	116871	shares
CY2020	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2	P0Y8M12D
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	87.87
CY2020Q4	us-gaap	Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Number Of Exercisable Options ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions	116871	shares
CY2020Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1	87.87
CY2020	re	Unrecognized Compensation Cost Related To Non Vested Share Based Compensation Expense UnrecognizedCompensationCostRelatedToNonVestedShareBasedCompensationExpense	88233000	USD
CY2020	re	Unrecognized Compensation Cost Expected To Be Recognized Over Weighted Average Period UnrecognizedCompensationCostExpectedToBeRecognizedOverWeightedAveragePeriod	P3Y4M24D
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	38745000	USD
CY2019	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	28135000	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Total Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue	25317000	USD
CY2020	re	Tax Benefit From Stock Options Vested TaxBenefitFromStockOptionsVested	8519000	USD
CY2020	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	-253811000	USD
CY2019	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	336163000	USD
CY2018	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	-610275000	USD
CY2020	us-gaap	Net Investment Income NetInvestmentIncome	642465000	USD
CY2019	us-gaap	Net Investment Income NetInvestmentIncome	647139000	USD
CY2018	us-gaap	Net Investment Income NetInvestmentIncome	581183000	USD
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	267649000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	185004000	USD
CY2018	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-127136000	USD
CY2020	re	Corporate Expenses CorporateExpenses	41118000	USD
CY2019	re	Corporate Expenses CorporateExpenses	32966000	USD
CY2018	re	Corporate Expenses CorporateExpenses	30672000	USD
CY2020	re	Interest Fee And Bond Issue Cost Amortization Expense InterestFeeAndBondIssueCostAmortizationExpense	36323000	USD
CY2019	re	Interest Fee And Bond Issue Cost Amortization Expense InterestFeeAndBondIssueCostAmortizationExpense	31693000	USD
CY2018	re	Interest Fee And Bond Issue Cost Amortization Expense InterestFeeAndBondIssueCostAmortizationExpense	31031000	USD
CY2020	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	6487000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-4660000	USD
CY2018	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-24251000	USD
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	585349000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1098987000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-242182000	USD
CY2020Q3	us-gaap	Net Investment Income NetInvestmentIncome	234233000	USD
CY2020Q4	us-gaap	Net Investment Income NetInvestmentIncome	222349000	USD
CY2020Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-210588000	USD
CY2020Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	184648000	USD
CY2020Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	110203000	USD
CY2020Q1	re	Premiumwrittengross Premiumwrittengross	2570871000	USD
CY2020Q2	re	Premiumwrittengross Premiumwrittengross	2369338000	USD
CY2020	re	Percentage Threshold Of Company Revenue Not Exceeded By Any Other Country PercentageThresholdOfCompanyRevenueNotExceededByAnyOtherCountry	0.201	pure
CY2019	re	Percentage Threshold Of Company Revenue Not Exceeded By Any Other Country PercentageThresholdOfCompanyRevenueNotExceededByAnyOtherCountry	0.231	pure
CY2018	re	Percentage Threshold Of Company Revenue Not Exceeded By Any Other Country PercentageThresholdOfCompanyRevenueNotExceededByAnyOtherCountry	0.197	pure
CY2020Q3	re	Premiumwrittengross Premiumwrittengross	2791604000	USD
CY2020Q4	re	Premiumwrittengross Premiumwrittengross	2750548000	USD
CY2020Q1	us-gaap	Premiums Written Net PremiumsWrittenNet	2201479000	USD
CY2020Q2	us-gaap	Premiums Written Net PremiumsWrittenNet	2017478000	USD
CY2020Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	2448680000	USD
CY2020Q4	us-gaap	Premiums Written Net PremiumsWrittenNet	2449346000	USD
CY2020Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	2036814000	USD
CY2020Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2042405000	USD
CY2020Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	2205811000	USD
CY2020Q4	us-gaap	Premiums Earned Net PremiumsEarnedNet	2396483000	USD
CY2020Q1	us-gaap	Net Investment Income NetInvestmentIncome	147800000	USD
CY2020Q2	us-gaap	Net Investment Income NetInvestmentIncome	38083000	USD
CY2020Q4	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	183386000	USD
CY2020Q1	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	2008222000	USD
CY2020Q2	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	1991462000	USD
CY2020Q3	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	2320417000	USD
CY2020Q4	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	2615223000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	16612000	USD
CY2020Q2	us-gaap	Profit Loss ProfitLoss	190880000	USD
CY2020Q3	us-gaap	Profit Loss ProfitLoss	243057000	USD
CY2020Q4	us-gaap	Profit Loss ProfitLoss	63601000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.41
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.78
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.08
CY2020Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.59
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.41
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.77
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.07
CY2020Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.59
CY2019Q1	re	Premiumwrittengross Premiumwrittengross	2127108000	USD
CY2019Q2	re	Premiumwrittengross Premiumwrittengross	2166655000	USD
CY2019Q3	re	Premiumwrittengross Premiumwrittengross	2403274000	USD
CY2019Q4	re	Premiumwrittengross Premiumwrittengross	2436327000	USD
CY2019Q1	us-gaap	Premiums Written Net PremiumsWrittenNet	1851698000	USD
CY2019Q2	us-gaap	Premiums Written Net PremiumsWrittenNet	1783983000	USD
CY2019Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	2068557000	USD
CY2019Q4	us-gaap	Premiums Written Net PremiumsWrittenNet	2120186000	USD
CY2019Q1	us-gaap	Premiums Earned Net PremiumsEarnedNet	1732697000	USD
CY2019Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	1817299000	USD
CY2019Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	1905619000	USD
CY2019Q4	us-gaap	Premiums Earned Net PremiumsEarnedNet	1948071000	USD
CY2019Q1	us-gaap	Net Investment Income NetInvestmentIncome	140976000	USD
CY2019Q2	us-gaap	Net Investment Income NetInvestmentIncome	179028000	USD
CY2019Q3	us-gaap	Net Investment Income NetInvestmentIncome	181058000	USD
CY2019Q4	us-gaap	Net Investment Income NetInvestmentIncome	146077000	USD
CY2019Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	92232000	USD
CY2019Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	30272000	USD
CY2019Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-12943000	USD
CY2019Q4	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	75443000	USD
CY2019Q1	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	1537009000	USD
CY2019Q2	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	1620413000	USD
CY2019Q3	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	1933158000	USD
CY2019Q4	re	Claims And Underwriting Expenses ClaimsAndUnderwritingExpenses	1976943000	USD
CY2019Q1	us-gaap	Profit Loss ProfitLoss	354551000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	332868000	USD
CY2019Q3	us-gaap	Profit Loss ProfitLoss	104398000	USD
CY2019Q4	us-gaap	Profit Loss ProfitLoss	217644000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.70
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	8.17
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.56
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.34
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.67
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	8.15
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.56
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.32
CY2020Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Cost SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost	24287685000	USD
CY2020Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Fair Value SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue	25461591000	USD
CY2020Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Carrying Amount SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount	25461591000	USD
CY2020	re	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	80451000	USD
CY2019	re	Accumulated Other Comprehensive Income Loss Tax AccumulatedOtherComprehensiveIncomeLossTax	30996000	USD
CY2020Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	622053000	USD
CY2020Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	16398997000	USD
CY2020Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	3501359000	USD
CY2020	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	8681513000	USD
CY2020	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	642465000	USD
CY2020	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	6550837000	USD
CY2020	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	1873250000	USD
CY2020	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	511237000	USD
CY2020	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	9116983000	USD
CY2019Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	581863000	USD
CY2019Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	13611313000	USD
CY2019	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	647139000	USD
CY2019Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	3056735000	USD
CY2019	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	7403686000	USD
CY2019	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	4922898000	USD
CY2019	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	1703726000	USD
CY2019	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	440899000	USD
CY2019	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	7824424000	USD
CY2018Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	511573000	USD
CY2018Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	13119090000	USD
CY2018Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	2517612000	USD
CY2018	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	6931699000	USD
CY2018	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	581183000	USD
CY2018	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	5651403000	USD
CY2018	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	1519030000	USD
CY2018	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	371541000	USD
CY2018	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	7414428000	USD

Files In Submission

Name	View Source	Status
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$EG
EVEREST GROUP, LTD. Stock $eg

2020 Q4 Form 10-K Financial Statement

#000109507321000006 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EG EVEREST GROUP, LTD. Stock $eg

2020 Q4 Form 10-K Financial Statement

#000109507321000006 Filed on March 01, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EG
EVEREST GROUP, LTD. Stock $eg