$WRB
BERKLEY W R CORP Stock $wrb

$wrb Overview Financials Valuation SEC Filings Company Website

2024 Q3 Form 10-Q Financial Statement

#000001154424000024 Filed on August 02, 2024

Income Statement

Concept	2024 Q3	2024 Q2
Revenue	$3.400B	$3.314B
YoY Change	12.2%	10.62%
Cost Of Revenue	$1.826B	$1.781B
YoY Change	11.6%	13.44%
Gross Profit	$1.574B	$1.533B
YoY Change	12.91%	7.51%
Gross Profit Margin	46.3%	46.27%
Selling, General & Admin	$11.23M	$11.33M
YoY Change	-64.18%	-66.76%
% of Gross Profit	0.71%	0.74%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization
YoY Change
% of Gross Profit
Operating Expenses	$2.894B	$2.795B
YoY Change	11.28%	11.99%
Operating Profit	-$1.320B	-$1.261B
YoY Change	9.4%	17.96%
Interest Expense	-$31.72M	-$31.71M
YoY Change	-199.47%	-199.54%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$474.4M	$487.7M
YoY Change	12.98%	6.67%
Income Tax	$109.1M	$115.8M
% Of Pretax Income	23.0%	23.74%
Net Earnings	$365.6M	$371.9M
YoY Change	9.61%	4.38%
Net Earnings / Revenue	10.75%	11.22%
Basic Earnings Per Share	$0.92	$0.93
Diluted Earnings Per Share	$0.91	$0.92
COMMON SHARES
Basic Shares Outstanding	380.6M shares	255.7M shares
Diluted Shares Outstanding	401.8M shares	403.7M shares

Balance Sheet

Concept	2024 Q3	2024 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.573B	$1.580B
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	$478.4M	$477.0M
YoY Change	13.01%	13.3%
Goodwill	$184.1M	$184.1M
YoY Change	5.44%	5.44%
Intangibles
YoY Change
Long-Term Investments	$1.607B	$1.589B
YoY Change	0.43%	-0.32%
Other Assets	$131.2M	$220.1M
YoY Change	-54.97%	-29.87%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$40.36B	$38.91B
YoY Change	11.76%	10.2%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$224.8M	$231.1M
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$224.8M	$231.1M
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$2.837B	$2.838B
YoY Change	0.02%	0.07%
Other Long-Term Liabilities	$1.486B	$1.424B
YoY Change	-3.84%	5.61%
Total Long-Term Liabilities	$4.323B	$4.261B
YoY Change	-1.34%	1.86%
TOTAL LIABILITIES
Total Short-Term Liabilities	$224.8M	$231.1M
Total Long-Term Liabilities	$4.323B	$4.261B
Total Liabilities	$31.92B	$31.12B
YoY Change	9.38%	9.59%
SHAREHOLDERS EQUITY
Retained Earnings	$11.91B	$11.67B
YoY Change	10.27%	9.84%
Common Stock	$1.132B	$1.146B
YoY Change	1.58%	1.68%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$4.012B	$4.008B
YoY Change	9.12%	8.84%
Treasury Stock Shares
Shareholders Equity	$8.426B	$7.774B
YoY Change
Total Liabilities & Shareholders Equity	$40.36B	$38.91B
YoY Change	11.76%	10.2%

Cashflow Statement

Concept	2024 Q3	2024 Q2
OPERATING ACTIVITIES
Net Income	$365.6M	$371.9M
YoY Change	9.61%	4.38%
Depreciation, Depletion And Amortization
YoY Change
Cash From Operating Activities	$1.241B	$881.3M
YoY Change	15.2%	24.35%
INVESTING ACTIVITIES
Capital Expenditures	$35.41M	$38.04M
YoY Change	44.44%	79.12%
Acquisitions
YoY Change
Other Investing Activities	-$1.070B	-$49.16M
YoY Change	-11.65%	-122.4%
Cash From Investing Activities	-$1.105B	-$87.20M
YoY Change	-10.54%	-143.99%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-153.8M	-378.4M
YoY Change	573.29%	18.15%
NET CHANGE
Cash From Operating Activities	1.241B	881.3M
Cash From Investing Activities	-1.105B	-87.20M
Cash From Financing Activities	-153.8M	-378.4M
Net Change In Cash	-18.17M	415.7M
YoY Change	-89.97%	-29.14%
FREE CASH FLOW
Cash From Operating Activities	$1.241B	$881.3M
Capital Expenditures	$35.41M	$38.04M
Free Cash Flow	$1.205B	$843.3M
YoY Change	14.52%	22.66%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2024Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	21837000	usd
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	384817136	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	384817136	shares
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-16311000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded	1439000	usd
CY2024Q2	us-gaap	Direct Premiums Written DirectPremiumsWritten	3380470000	usd
CY2023Q2	us-gaap	Direct Premiums Written DirectPremiumsWritten	2985563000	usd
CY2024Q2	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	337302000	usd
CY2023Q2	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	351210000	usd
CY2024Q2	us-gaap	Ceded Premiums Written CededPremiumsWritten	590993000	usd
CY2023Q2	us-gaap	Ceded Premiums Written CededPremiumsWritten	525258000	usd
CY2024Q2	us-gaap	Premiums Written Net PremiumsWrittenNet	3126779000	usd
CY2023Q2	us-gaap	Premiums Written Net PremiumsWrittenNet	2811515000	usd
CY2023Q2	us-gaap	Direct Premiums Earned DirectPremiumsEarned	2725650000	usd
CY2024Q2	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	328114000	usd
CY2023Q2	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	302431000	usd
CY2024Q2	us-gaap	Ceded Premiums Earned CededPremiumsEarned	530571000	usd
CY2023Q2	us-gaap	Ceded Premiums Earned CededPremiumsEarned	475354000	usd
CY2024Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2846415000	usd
CY2023Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2552727000	usd
CY2024Q2	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	327243000	usd
CY2023Q2	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	333795000	usd
CY2023Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	117523000	usd
CY2024Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	37279000	usd
CY2023Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	32770000	usd
CY2024Q2	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	10255000	usd
CY2023Q2	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	9365000	usd
CY2023Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	10138000	usd
CY2024Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	12364000	usd
CY2023Q2	us-gaap	Operating Lease Payments OperatingLeasePayments	11281000	usd
CY2024Q2	wrb	Right Of Use Assets Reduced Obtained In Exchange For New Lease Liabilities RightOfUseAssetsReducedObtainedInExchangeForNewLeaseLiabilities	8853000	usd
CY2024Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2846415000	usd
CY2024Q2	us-gaap	Net Investment Income NetInvestmentIncome	372129000	usd
CY2024Q2	wrb	Other Revenues OtherRevenues	95488000	usd
CY2024Q2	us-gaap	Revenues Revenues	3314032000	usd
CY2024Q2	wrb	Income Before Income Taxes IncomeBeforeIncomeTaxes	487673000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	371909000	usd
CY2023Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	58654000	usd
CY2023Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	58654000	usd
CY2023Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	58654000	usd
CY2023Q2	wrb	Marketable Securities Realized Gain Loss Excluding Otherthan Temporary Impairments Netof Tax MarketableSecuritiesRealizedGainLossExcludingOtherthanTemporaryImpairmentsNetofTax	46067000	usd
CY2023Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2552727000	usd
CY2023Q2	us-gaap	Net Investment Income NetInvestmentIncome	245152000	usd
CY2023Q2	us-gaap	Revenues Revenues	2995914000	usd
CY2023Q2	wrb	Income Before Income Taxes IncomeBeforeIncomeTaxes	457184000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	356308000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	-32733000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	-32733000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	-32733000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	81664000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	81664000	usd
CY2023Q4	us-gaap	Assets Assets	37111830000	usd
CY2023Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2552727000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5610762000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5044159000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	37352000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded	2001000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded	2491000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	4412000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	561000	usd
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	7000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	44248000	usd
CY2024Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	22831000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not Previously Recorded DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded	2305000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	-1872000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Not To Sell Before Recovery Credit Loss Previously Recorded Expense Reversal DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal	4803000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	561000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Securities Sold DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold	2000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	21837000	usd
CY2023Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	44248000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities Within One Year Amortized Cost MarketableSecuritiesFixedMaturitiesWithinOneYearAmortizedCost	1943246000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities Within One Year Fair Value MarketableSecuritiesFixedMaturitiesWithinOneYearFairValue	1884790000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities After One Through Five Years Amortized Cost MarketableSecuritiesFixedMaturitiesAfterOneThroughFiveYearsAmortizedCost	9983542000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities After One Through Five Years Fair Value MarketableSecuritiesFixedMaturitiesAfterOneThroughFiveYearsFairValue	9601275000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities After Five Through Ten Years Amortized Cost MarketableSecuritiesFixedMaturitiesAfterFiveThroughTenYearsAmortizedCost	4262692000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities After Five Through Ten Years Fair Value MarketableSecuritiesFixedMaturitiesAfterFiveThroughTenYearsFairValue	4152066000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities After Ten Years Amortized Cost MarketableSecuritiesFixedMaturitiesAfterTenYearsAmortizedCost	2945631000	usd
CY2024Q2	wrb	Marketable Securities Fixed Maturities After Ten Years Fair Value MarketableSecuritiesFixedMaturitiesAfterTenYearsFairValue	2850702000	usd
CY2024Q2	wrb	Marketable Securities Debt Maturities Without Single Maturity Date Amortized Cost MarketableSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	2776272000	usd
CY2024Q2	wrb	Marketable Securities Debt Maturities Without Single Maturity Date Fair Value MarketableSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	2595669000	usd
CY2024Q2	wrb	Debt Securities Availableforsaleand Heldtomaturity Amortized Cost Net DebtSecuritiesAvailableforsaleandHeldtomaturityAmortizedCostNet	21911383000	usd
CY2024Q2	us-gaap	Debt Securities Available For Sale And Held To Maturity Fair Value DebtSecuritiesAvailableForSaleAndHeldToMaturityFairValue	21084502000	usd
CY2024Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	34000	usd
CY2024Q2	us-gaap	Trading Securities TradingSecurities	1222000000	usd
CY2023Q4	us-gaap	Trading Securities TradingSecurities	938000000	usd
CY2024Q2	wrb	Investment Income Loss Interest And Dividend InvestmentIncomeLossInterestAndDividend	374975000	usd
CY2023Q2	wrb	Investment Income Loss Interest And Dividend InvestmentIncomeLossInterestAndDividend	246812000	usd
	wrb	Investment Income Loss Interest And Dividend InvestmentIncomeLossInterestAndDividend	697057000	usd
	wrb	Investment Income Loss Interest And Dividend InvestmentIncomeLossInterestAndDividend	472925000	usd
CY2024Q2	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	2846000	usd
CY2023Q2	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	1660000	usd
	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	5090000	usd
	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	4374000	usd
CY2024Q2	us-gaap	Net Investment Income NetInvestmentIncome	372129000	usd
CY2023Q2	us-gaap	Net Investment Income NetInvestmentIncome	245152000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	691967000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	468551000	usd
CY2024Q2	wrb	Nonconsolidated Legal Entity Unfunded Commitments NonconsolidatedLegalEntityUnfundedCommitments	275000000	usd
CY2024Q2	us-gaap	Equity Method Investments EquityMethodInvestments	1589119000	usd
CY2023Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1621655000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3873000	usd
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	993000	usd
CY2024Q2	wrb	Buildingand Lease Obligations BuildingandLeaseObligations	1051755000	usd
CY2023Q4	wrb	Buildingand Lease Obligations BuildingandLeaseObligations	1022654000	usd
CY2024Q2	us-gaap	Development In Process DevelopmentInProcess	227551000	usd
CY2023Q4	us-gaap	Development In Process DevelopmentInProcess	227220000	usd
CY2024Q2	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	1279306000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	1249874000	usd
CY2024Q2	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	35389000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	32745000	usd
	wrb	Operating Lease Right Of Use Asset Accumulated Depreciation OperatingLeaseRightOfUseAssetAccumulatedDepreciation	4164000	usd
	wrb	Operating Lease Right Of Use Asset Accumulated Depreciation OperatingLeaseRightOfUseAssetAccumulatedDepreciation	4394000	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Remainder Of Fiscal Year LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear	15013195	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	32278604	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	33991743	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	32850623	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	33376327	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	31999237	usd
CY2024Q2	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	416884751	usd
CY2024Q2	us-gaap	Notes Receivable Net NotesReceivableNet	349325000	usd
CY2023Q4	us-gaap	Notes Receivable Net NotesReceivableNet	201271000	usd
CY2024Q2	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	349310000	usd
CY2023Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	198244000	usd
CY2023Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	3004000	usd
CY2022Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1791000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-1191000	usd
	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2759000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1813000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	4550000	usd
CY2024Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	2609000	usd
CY2023Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1609000	usd
CY2024Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-796000	usd
CY2023Q2	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	2941000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1813000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	4550000	usd
CY2024Q2	wrb	Availablefor Saleand Heldto Maturity Realized Gains Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedGainsDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	3092000	usd
CY2023Q2	wrb	Availablefor Saleand Heldto Maturity Realized Gains Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedGainsDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	115000	usd
	wrb	Availablefor Saleand Heldto Maturity Realized Gains Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedGainsDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	6649000	usd
	wrb	Availablefor Saleand Heldto Maturity Realized Gains Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedGainsDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	1058000	usd
CY2024Q2	wrb	Availablefor Saleand Heldto Maturity Realized Losses Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedLossesDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	5362000	usd
CY2023Q2	wrb	Availablefor Saleand Heldto Maturity Realized Losses Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedLossesDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	3640000	usd
	wrb	Availablefor Saleand Heldto Maturity Realized Losses Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedLossesDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	7685000	usd
	wrb	Availablefor Saleand Heldto Maturity Realized Losses Debt Securities Excluding Otherthan Temporary Impairmentsand Allowances AvailableforSaleandHeldtoMaturityRealizedLossesDebtSecuritiesExcludingOtherthanTemporaryImpairmentsandAllowances	21770000	usd
CY2024Q2	wrb	Availableforsale Securities Gross Realized Gain Loss Equity Securities Excluding Otherthan Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossEquitySecuritiesExcludingOtherthanTemporaryImpairments	61521000	usd
CY2023Q2	wrb	Availableforsale Securities Gross Realized Gain Loss Equity Securities Excluding Otherthan Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossEquitySecuritiesExcludingOtherthanTemporaryImpairments	111072000	usd
	wrb	Availableforsale Securities Gross Realized Gain Loss Equity Securities Excluding Otherthan Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossEquitySecuritiesExcludingOtherthanTemporaryImpairments	101798000	usd
	wrb	Availableforsale Securities Gross Realized Gain Loss Equity Securities Excluding Otherthan Temporary Impairments AvailableforsaleSecuritiesGrossRealizedGainLossEquitySecuritiesExcludingOtherthanTemporaryImpairments	112132000	usd
CY2024Q2	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-66717000	usd
CY2023Q2	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	21260000	usd
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-40905000	usd
	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	64664000	usd
CY2024Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	217000	usd
CY2023Q2	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-98000	usd
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	1210000	usd
	us-gaap	Equity Method Investment Realized Gain Loss On Disposal EquityMethodInvestmentRealizedGainLossOnDisposal	-88000	usd
CY2024Q2	wrb	Real Estate Realized Gain Loss On Disposal RealEstateRealizedGainLossOnDisposal	-1958000	usd
CY2023Q2	wrb	Real Estate Realized Gain Loss On Disposal RealEstateRealizedGainLossOnDisposal	-55449000	usd
	wrb	Real Estate Realized Gain Loss On Disposal RealEstateRealizedGainLossOnDisposal	-4174000	usd
	wrb	Real Estate Realized Gain Loss On Disposal RealEstateRealizedGainLossOnDisposal	-44710000	usd
CY2024Q2	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	usd
CY2023Q2	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	usd
	us-gaap	Gain Loss On Sales Of Loans Net GainLossOnSalesOfLoansNet	0	usd
CY2024Q2	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-51099000	usd
CY2023Q2	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-4613000	usd
	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-105696000	usd
	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-20028000	usd
CY2024Q2	wrb	Realized Gain Losson Investments Including Equity Method Investments Excluding Otherthan Temporary Impairmentsand Allowances RealizedGainLossonInvestmentsIncludingEquityMethodInvestmentsExcludingOtherthanTemporaryImpairmentsandAllowances	-60306000	usd
CY2023Q2	wrb	Realized Gain Losson Investments Including Equity Method Investments Excluding Otherthan Temporary Impairmentsand Allowances RealizedGainLossonInvestmentsIncludingEquityMethodInvestmentsExcludingOtherthanTemporaryImpairmentsandAllowances	68647000	usd
	wrb	Realized Gain Losson Investments Including Equity Method Investments Excluding Otherthan Temporary Impairmentsand Allowances RealizedGainLossonInvestmentsIncludingEquityMethodInvestmentsExcludingOtherthanTemporaryImpairmentsandAllowances	-48803000	usd
	wrb	Realized Gain Losson Investments Including Equity Method Investments Excluding Otherthan Temporary Impairmentsand Allowances RealizedGainLossonInvestmentsIncludingEquityMethodInvestmentsExcludingOtherthanTemporaryImpairmentsandAllowances	91258000	usd
CY2024Q2	wrb	Debt Securities Allowancefor Credit Loss Period Increase Decrease DebtSecuritiesAllowanceforCreditLossPeriodIncreaseDecrease	998000	usd
CY2023Q2	wrb	Debt Securities Allowancefor Credit Loss Period Increase Decrease DebtSecuritiesAllowanceforCreditLossPeriodIncreaseDecrease	-7052000	usd
	wrb	Debt Securities Allowancefor Credit Loss Period Increase Decrease DebtSecuritiesAllowanceforCreditLossPeriodIncreaseDecrease	14879000	usd
	wrb	Debt Securities Allowancefor Credit Loss Period Increase Decrease DebtSecuritiesAllowanceforCreditLossPeriodIncreaseDecrease	-6835000	usd
CY2024Q2	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	796000	usd
CY2023Q2	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-2941000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	1191000	usd
	us-gaap	Financing Receivable Allowance For Credit Losses Period Increase Decrease FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease	-2759000	usd
CY2024Q2	wrb	Investments Allowancefor Credit Loss Period Increase Decrease InvestmentsAllowanceforCreditLossPeriodIncreaseDecrease	1794000	usd
CY2023Q2	wrb	Investments Allowancefor Credit Loss Period Increase Decrease InvestmentsAllowanceforCreditLossPeriodIncreaseDecrease	-9993000	usd
	wrb	Investments Allowancefor Credit Loss Period Increase Decrease InvestmentsAllowanceforCreditLossPeriodIncreaseDecrease	16070000	usd
	wrb	Investments Allowancefor Credit Loss Period Increase Decrease InvestmentsAllowanceforCreditLossPeriodIncreaseDecrease	-9594000	usd
CY2024Q2	us-gaap	Gain Loss On Investments GainLossOnInvestments	-58512000	usd
CY2023Q2	us-gaap	Gain Loss On Investments GainLossOnInvestments	58654000	usd
	us-gaap	Gain Loss On Investments GainLossOnInvestments	-32733000	usd
	us-gaap	Gain Loss On Investments GainLossOnInvestments	81664000	usd
CY2024Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsTax	-12401000	usd
CY2023Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsTax	12587000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsTax	-5769000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsTax	17437000	usd
CY2024Q2	wrb	Marketable Securities Realized Gain Loss Excluding Otherthan Temporary Impairments Netof Tax MarketableSecuritiesRealizedGainLossExcludingOtherthanTemporaryImpairmentsNetofTax	-46111000	usd
CY2023Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Netof Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsNetofTax	46067000	usd
	wrb	Marketable Securities Realized Gain Loss Excluding Otherthan Temporary Impairments Netof Tax MarketableSecuritiesRealizedGainLossExcludingOtherthanTemporaryImpairmentsNetofTax	-26964000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Netof Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsNetofTax	64227000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-20640000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-144043000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-109937000	usd
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	87978000	usd
CY2024Q2	wrb	Changein Unrealized Gainlosson Investmentstax ChangeinUnrealizedGainlossonInvestmentstax	-7302000	usd
CY2023Q2	wrb	Changein Unrealized Gainlosson Investmentstax ChangeinUnrealizedGainlossonInvestmentstax	-30759000	usd
	wrb	Changein Unrealized Gainlosson Investmentstax ChangeinUnrealizedGainlossonInvestmentstax	-26477000	usd
	wrb	Changein Unrealized Gainlosson Investmentstax ChangeinUnrealizedGainlossonInvestmentstax	20463000	usd
CY2024Q2	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterest	-1000	usd
CY2023Q2	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterest	0	usd
	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterest	-1000	usd
	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterest	1000	usd
CY2024Q2	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest Netof Tax ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterestNetofTax	-13337000	usd
CY2023Q2	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest Netof Tax ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterestNetofTax	-113284000	usd
	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest Netof Tax ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterestNetofTax	-83459000	usd
	wrb	Changein Unrealized Gainlosson Investments Including Portion Attributableto Noncontrolling Interest Netof Tax ChangeinUnrealizedGainlossonInvestmentsIncludingPortionAttributabletoNoncontrollingInterestNetofTax	67514000	usd
CY2023	wrb	Fair Value Measurementwith Unobservable Inputs Reconciliation Recurring Basis Asset Impairment FairValueMeasurementwithUnobservableInputsReconciliationRecurringBasisAssetImpairment	7601000	usd
	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	The table below provides a reconciliation of the beginning and ending reserve balances:<div style="margin-top:5pt;text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.707%"><tr><td style="width:1.0%"></td><td style="width:76.759%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:9.603%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.533%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:9.605%"></td><td style="width:0.1%"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:0 1pt"></td><td colspan="9" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">June 30,</span></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%;text-decoration:underline">(In thousands)</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2024</span></td><td colspan="3" style="border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2023</span></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves at beginning of period</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">15,661,820 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">14,248,879 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net provision for losses and loss expenses:</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Claims occurring during the current year (1)</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3,411,888 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3,064,046 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Increase in estimates for claims occurring in prior years (2) (3)</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">14,700 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">28,853 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Loss reserve discount accretion </span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">17,786 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">15,510 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total</span></td><td colspan="2" style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3,444,374 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3,108,409 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net payments for claims:</span></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">383,639 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">375,365 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 7.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Prior years</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,205,566 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,019,371 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Total</span></td><td colspan="2" style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,589,205 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,394,736 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Foreign currency translation</span></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">(56,143)</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">5,929 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Net reserves at end of period</span></td><td colspan="2" style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">16,460,846 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">14,968,481 </span></td><td style="border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Ceded reserves at end of period</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">3,106,344 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">2,951,515 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">Gross reserves at end of period</span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">19,567,190 </span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">$</span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:9pt;font-weight:400;line-height:100%">17,919,996 </span></td><td style="border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr></table></div><div style="margin-top:1pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%">_______________________________________</span></div><div style="margin-top:3pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(1) Claims occurring during the current year are net of loss reserve discounts of $26 million and $22 million for the six months ended June 30, 2024 and 2023, respectively.</span></div><div style="margin-bottom:3pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(2) The change in estimates for claims occurring in prior years is net of loss reserve discount. On an undiscounted basis, the estimates for claims occurring in prior years increased by $7 million and decreased by $6 million for the six months ended June 30, 2024 and 2023, respectively. </span></div><div style="margin-bottom:6pt;margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">(3) For certain retrospectively rated insurance policies and reinsurance agreements, reserve development is offset by additional or return premiums. Favorable development, net of additional and return premiums, was $2 million and adverse development was $21 million for the six months ended June 30, 2024 and 2023, respectively.</span></div>
CY2023Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	15661820000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	14248879000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	3411888000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	3064046000	usd
	wrb	Liabilityfor Unpaid Claimsand Claims Adjustment Expense Incurred Claims Adjustment LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseIncurredClaimsAdjustment	-14700000	usd
	wrb	Liabilityfor Unpaid Claimsand Claims Adjustment Expense Incurred Claims Adjustment LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseIncurredClaimsAdjustment	-28853000	usd
	wrb	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Loss Reserve Discount Accretion LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredLossReserveDiscountAccretion	-17786000	usd
	wrb	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Loss Reserve Discount Accretion LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredLossReserveDiscountAccretion	-15510000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	3444374000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	3108409000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	383639000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	375365000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	2205566000	usd
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	2019371000	usd
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	2589205000	usd
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	2394736000	usd
	wrb	Liabilityfor Unpaid Claimsand Claims Adjustment Expense Foreign Exchange Translation LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseForeignExchangeTranslation	-56143000	usd
	wrb	Liabilityfor Unpaid Claimsand Claims Adjustment Expense Foreign Exchange Translation LiabilityforUnpaidClaimsandClaimsAdjustmentExpenseForeignExchangeTranslation	5929000	usd
CY2024Q2	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	16460846000	usd
CY2023Q2	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	14968481000	usd
CY2024Q2	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	3106344000	usd
CY2023Q2	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	2951515000	usd
CY2024Q2	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	19567190000	usd
CY2023Q2	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	17919996000	usd
CY2024Q2	wrb	Workers Compensation Discount Current Year Amount WorkersCompensationDiscountCurrentYearAmount	26000000	usd
CY2023Q2	wrb	Workers Compensation Discount Current Year Amount WorkersCompensationDiscountCurrentYearAmount	22000000	usd
	wrb	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Undiscounted Basis Prior Years Increase Decrease LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsUndiscountedBasisPriorYearsIncreaseDecrease	7000000	usd
	wrb	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims Undiscounted Basis Prior Years Increase Decrease LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaimsUndiscountedBasisPriorYearsIncreaseDecrease	-6000000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	2000000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	21000000	usd
CY2024Q2	wrb	Liabilityfor Claimsand Claims Adjustment Expense Net Of Reinsurance LiabilityforClaimsandClaimsAdjustmentExpenseNetOfReinsurance	388000000	usd
CY2024Q2	wrb	Liabilityfor Claimsand Claims Adjustment Expense Net Of Reinsurance LiabilityforClaimsandClaimsAdjustmentExpenseNetOfReinsurance	388000000	usd
CY2024Q2	wrb	Liability For Claims And Claims Adjustment Expense Net Of Reinsurance Reported Claims Amount LiabilityForClaimsAndClaimsAdjustmentExpenseNetOfReinsuranceReportedClaimsAmount	385000000	usd
CY2024Q2	wrb	Liability For Claims And Claims Adjustment Expense Net Of Reinsurance Incurred But Not Reported Ibnr Claims Amount LiabilityForClaimsAndClaimsAdjustmentExpenseNetOfReinsuranceIncurredButNotReportedIBNRClaimsAmount	3000000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	2000000	usd
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	21000000	usd
	us-gaap	Direct Premiums Written DirectPremiumsWritten	6419537000	usd
	us-gaap	Direct Premiums Written DirectPremiumsWritten	5724317000	usd
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	660991000	usd
	us-gaap	Assumed Premiums Written AssumedPremiumsWritten	661773000	usd
	us-gaap	Ceded Premiums Written CededPremiumsWritten	1102458000	usd
	us-gaap	Ceded Premiums Written CededPremiumsWritten	999751000	usd
	us-gaap	Premiums Written Net PremiumsWrittenNet	5978070000	usd
	us-gaap	Premiums Written Net PremiumsWrittenNet	5386339000	usd
CY2024Q2	us-gaap	Direct Premiums Earned DirectPremiumsEarned	3048872000	usd
	us-gaap	Direct Premiums Earned DirectPremiumsEarned	5985516000	usd
	us-gaap	Direct Premiums Earned DirectPremiumsEarned	5392712000	usd
	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	666024000	usd
	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	597661000	usd
	us-gaap	Ceded Premiums Earned CededPremiumsEarned	1040778000	usd
	us-gaap	Ceded Premiums Earned CededPremiumsEarned	946214000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5610762000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5044159000	usd
	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	633194000	usd
	us-gaap	Reinsurance Effect On Claims And Benefits Incurred Amount Ceded ReinsuranceEffectOnClaimsAndBenefitsIncurredAmountCeded	649271000	usd
CY2024Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	123647000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	244701000	usd
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	235941000	usd
CY2023Q4	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	35110000	usd
CY2022Q4	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	30660000	usd
	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	2169000	usd
	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	2110000	usd
CY2024Q1	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	35039000	usd
CY2023Q1	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	32353000	usd
CY2024Q2	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	2240000	usd
CY2023Q2	us-gaap	Premium Receivable Credit Loss Expense Reversal PremiumReceivableCreditLossExpenseReversal	417000	usd
CY2024Q2	us-gaap	Premiums Receivable Allowance For Doubtful Accounts PremiumsReceivableAllowanceForDoubtfulAccounts	37279000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	8404000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	8064000	usd
	us-gaap	Reinsurance Recoverable Credit Loss Expense Reversal ReinsuranceRecoverableCreditLossExpenseReversal	1851000	usd
	us-gaap	Reinsurance Recoverable Credit Loss Expense Reversal ReinsuranceRecoverableCreditLossExpenseReversal	1301000	usd
CY2024Q1	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	9185000	usd
CY2023Q1	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	8703000	usd
CY2024Q2	us-gaap	Reinsurance Recoverable Credit Loss Expense Reversal ReinsuranceRecoverableCreditLossExpenseReversal	1070000	usd
CY2023Q2	us-gaap	Reinsurance Recoverable Credit Loss Expense Reversal ReinsuranceRecoverableCreditLossExpenseReversal	662000	usd
CY2024Q2	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	10255000	usd
	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	25000000	usd
	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	23000000	usd
CY2024Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	11326000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	22403000	usd
	us-gaap	Operating Lease Cost OperatingLeaseCost	20326000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	24596000	usd
	us-gaap	Operating Lease Payments OperatingLeasePayments	21844000	usd
CY2023Q2	wrb	Right Of Use Assets Reduced Obtained In Exchange For New Lease Liabilities RightOfUseAssetsReducedObtainedInExchangeForNewLeaseLiabilities	2633000	usd
	wrb	Right Of Use Assets Reduced Obtained In Exchange For New Lease Liabilities RightOfUseAssetsReducedObtainedInExchangeForNewLeaseLiabilities	33548000	usd
	wrb	Right Of Use Assets Reduced Obtained In Exchange For New Lease Liabilities RightOfUseAssetsReducedObtainedInExchangeForNewLeaseLiabilities	7946000	usd
CY2024Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	190207000	usd
CY2023Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	157991000	usd
CY2024Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	231128000	usd
CY2023Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	191576000	usd
CY2024Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y6M
CY2023Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2024Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0551
CY2023Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0449
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	26008000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	45629000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	39117000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	30117000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	28576000	usd
CY2024Q2	wrb	Lessee Operating Lease Liability To Be Paid Due After Year Four LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour	107255000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	276702000	usd
CY2024Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	45574000	usd
CY2024Q2	us-gaap	Operating Lease Liability OperatingLeaseLiability	231128000	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	segment
CY2024Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	-58512000	usd
CY2024Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	-58512000	usd
CY2024Q2	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	-58512000	usd
CY2024Q2	wrb	Marketable Securities Realized Gain Loss Excluding Otherthan Temporary Impairments Netof Tax MarketableSecuritiesRealizedGainLossExcludingOtherthanTemporaryImpairmentsNetofTax	-46111000	usd
CY2023Q2	wrb	Other Revenues OtherRevenues	198035000	usd
	wrb	Marketable Securities Realized Gain Loss Excluding Otherthan Temporary Impairments Netof Tax MarketableSecuritiesRealizedGainLossExcludingOtherthanTemporaryImpairmentsNetofTax	-26964000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5610762000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	691967000	usd
	wrb	Other Revenues OtherRevenues	268076000	usd
	us-gaap	Revenues Revenues	6570805000	usd
	wrb	Income Before Income Taxes IncomeBeforeIncomeTaxes	1061744000	usd
	us-gaap	Net Income Loss NetIncomeLoss	814380000	usd
	wrb	Realized Gain Losson Marketable Securities Equity Method Investmentsand Other Investments Before Tax RealizedGainLossonMarketableSecuritiesEquityMethodInvestmentsandOtherInvestmentsBeforeTax	81664000	usd
	wrb	Marketable Securities Realized Gain Loss Excluding Otherthan Temporary Impairments Netof Tax MarketableSecuritiesRealizedGainLossExcludingOtherthanTemporaryImpairmentsNetofTax	64227000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5044159000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	468551000	usd
	wrb	Other Revenues OtherRevenues	378208000	usd
	us-gaap	Revenues Revenues	5890918000	usd
	wrb	Income Before Income Taxes IncomeBeforeIncomeTaxes	833256000	usd
	us-gaap	Net Income Loss NetIncomeLoss	650434000	usd
CY2024Q2	us-gaap	Assets Assets	38909919000	usd
CY2024Q2	us-gaap	Premiums Earned Net PremiumsEarnedNet	2846415000	usd
CY2024Q2	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q2	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q2	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q2	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0000011544-24-000024-index-headers.html	Edgar Link	pending
0000011544-24-000024-index.html	Edgar Link	pending
0000011544-24-000024.txt	Edgar Link	pending
0000011544-24-000024-xbrl.zip	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
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$WRB
BERKLEY W R CORP Stock $wrb

2024 Q3 Form 10-Q Financial Statement

#000001154424000024 Filed on August 02, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WRB BERKLEY W R CORP Stock $wrb

2024 Q3 Form 10-Q Financial Statement

#000001154424000024 Filed on August 02, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WRB
BERKLEY W R CORP Stock $wrb