10-K Filing

MARKEL GROUP INC. CIK: 1096343 FY 2023

Filing Information

Form Type	10-K
Accession Number	`0001096343-24-000025`
Period End Date	20231231
Filing Date	20240223
Fiscal Year	2023
Fiscal Period	FY
XBRL Instance	mkl-20231231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 72 Income Statement 105 Cash Flow Statement 128 Stockholders Equity 19

Balance Sheet 72 line items

Line Item	Tag	Value	Unit	Period
Fixed maturity securities, available-for-sale (amortized cost of $14,932,286 in 2023 and $12,805,887 in 2022)	`AvailableForSaleDebtSecuritiesAmortizedCostBasis`	$12.81B	USD	Point-in-time
Fixed maturity securities, available-for-sale (amortized cost of $14,932,286 in 2023 and $12,805,887 in 2022)	`AvailableForSaleDebtSecuritiesAmortizedCostBasis`	$14.93B	USD	Point-in-time
Equity securities (cost of $3,497,071 in 2023 and $3,100,040 in 2022)	`EquitySecuritiesFvNiCost`	$3.50B	USD	Point-in-time
Fixed maturity securities, available-for-sale (amortized cost of $14,932,286 in 2023 and $12,805,887 in 2022)	`AvailableForSaleSecuritiesDebtSecurities`	$14.37B	USD	Point-in-time
Equity securities (cost of $3,497,071 in 2023 and $3,100,040 in 2022)	`EquitySecuritiesFvNiCost`	$3.10B	USD	Point-in-time
Fixed maturity securities, available-for-sale (amortized cost of $14,932,286 in 2023 and $12,805,887 in 2022)	`AvailableForSaleSecuritiesDebtSecurities`	$11.86B	USD	Point-in-time
Senior long-term debt and other debt (estimated fair value of $3,353,000 in 2023 and $3,541,000 in 2022)	`LongTermDebtFairValue`	$3.54B	USD	Point-in-time
Senior long-term debt and other debt (estimated fair value of $3,353,000 in 2023 and $3,541,000 in 2022)	`LongTermDebtFairValue`	$3.35B	USD	Point-in-time
Equity securities (cost of $3,497,071 in 2023 and $3,100,040 in 2022)	`EquitySecuritiesFvNi`	$9.58B	USD	Point-in-time
Equity securities (cost of $3,497,071 in 2023 and $3,100,040 in 2022)	`EquitySecuritiesFvNi`	$7.67B	USD	Point-in-time
Short-term investments, available-for-sale (estimated fair value approximates cost)	`OtherShortTermInvestments`	$2.57B	USD	Point-in-time
Short-term investments, available-for-sale (estimated fair value approximates cost)	`OtherShortTermInvestments`	$2.67B	USD	Point-in-time
Total Investments	`Investments`	$22.20B	USD	Point-in-time
Total Investments	`Investments`	$26.52B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$3.75B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$4.14B	USD	Point-in-time
Restricted cash and cash equivalents	`RestrictedCashAndCashEquivalents`	$1.08B	USD	Point-in-time
Restricted cash and cash equivalents	`RestrictedCashAndCashEquivalents`	$584.97M	USD	Point-in-time
Receivables	`PremiumsAndOtherReceivablesNet`	$3.46B	USD	Point-in-time
Receivables	`PremiumsAndOtherReceivablesNet`	$2.96B	USD	Point-in-time
Reinsurance recoverables	`ReinsuranceRecoverablesOnPaidAndUnpaidLosses`	$9.24B	USD	Point-in-time
Reinsurance recoverables	`ReinsuranceRecoverablesOnPaidAndUnpaidLosses`	$8.45B	USD	Point-in-time
Deferred policy acquisition costs	`DeferredPolicyAcquisitionCosts`	$931.34M	USD	Point-in-time
Deferred policy acquisition costs	`DeferredPolicyAcquisitionCosts`	$925.48M	USD	Point-in-time
Prepaid reinsurance premiums	`PrepaidReinsurancePremiums`	$2.37B	USD	Point-in-time
Prepaid reinsurance premiums	`PrepaidReinsurancePremiums`	$2.07B	USD	Point-in-time
Goodwill	`Goodwill`	$2.90B	USD	Point-in-time
Goodwill	`Goodwill`	$2.62B	USD	Point-in-time
Goodwill	`Goodwill`	$2.64B	USD	Point-in-time
Intangible assets	`IntangibleAssetsNetExcludingGoodwill`	$1.75B	USD	Point-in-time
Intangible assets	`IntangibleAssetsNetExcludingGoodwill`	$1.82B	USD	Point-in-time
Intangible assets	`IntangibleAssetsNetExcludingGoodwill`	$1.59B	USD	Point-in-time
Other assets	`OtherAssets`	$3.99B	USD	Point-in-time
Other assets	`OtherAssets`	$3.59B	USD	Point-in-time
Total Assets	`Assets`	$49.79B	USD	Point-in-time
Total Assets	`Assets`	$55.05B	USD	Point-in-time
Unpaid losses and loss adjustment expenses	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$16.22B	USD	Point-in-time
Unpaid losses and loss adjustment expenses	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$23.48B	USD	Point-in-time
Unpaid losses and loss adjustment expenses	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$20.95B	USD	Point-in-time
Unpaid losses and loss adjustment expenses	`LiabilityForClaimsAndClaimsAdjustmentExpense`	$18.18B	USD	Point-in-time
Life and annuity benefits	`LiabilityForFuturePolicyBenefits`	$650.72M	USD	Point-in-time
Life and annuity benefits	`LiabilityForFuturePolicyBenefits`	$649.05M	USD	Point-in-time
Unearned premiums	`UnearnedPremiums`	$6.22B	USD	Point-in-time
Unearned premiums	`UnearnedPremiums`	$6.64B	USD	Point-in-time
Payables to insurance and reinsurance companies	`ReinsurancePayable`	$669.74M	USD	Point-in-time
Payables to insurance and reinsurance companies	`ReinsurancePayable`	$1.04B	USD	Point-in-time
Senior long-term debt and other debt (estimated fair value of $3,353,000 in 2023 and $3,541,000 in 2022)	`LongTermDebt`	$4.10B	USD	Point-in-time
Senior long-term debt and other debt (estimated fair value of $3,353,000 in 2023 and $3,541,000 in 2022)	`LongTermDebt`	$3.78B	USD	Point-in-time
Other liabilities	`OtherLiabilities`	$3.46B	USD	Point-in-time
Other liabilities	`OtherLiabilities`	$3.93B	USD	Point-in-time
Total Liabilities	`Liabilities`	$36.05B	USD	Point-in-time
Total Liabilities	`Liabilities`	$39.52B	USD	Point-in-time
Redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCommonCarryingAmount`	$523.15M	USD	Point-in-time
Redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCommonCarryingAmount`	$469.69M	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies	`CommitmentsAndContingencies`	-	USD	Point-in-time
Preferred stock	`PreferredStockValue`	$591.89M	USD	Point-in-time
Preferred stock	`PreferredStockValue`	$591.89M	USD	Point-in-time
Common stock	`CommonStockValue`	$3.52B	USD	Point-in-time
Common stock	`CommonStockValue`	$3.49B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$11.35B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$9.83B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-478.21M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-767.49M	USD	Point-in-time
Total Shareholders' Equity	`StockholdersEquity`	$14.98B	USD	Point-in-time
Total Shareholders' Equity	`StockholdersEquity`	$13.15B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$72.28M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$62.79M	USD	Point-in-time
Total Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$13.21B	USD	Point-in-time
Total Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$15.06B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$55.05B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$49.79B	USD	Point-in-time

Income Statement 105 line items

Line Item	Tag	Value	Unit	Period
Earned premiums	`PremiumsEarnedNet`	$8.30B	USD	Annual
Earned premiums	`PremiumsEarnedNet`	$6.50B	USD	Annual
Earned premiums	`PremiumsEarnedNet`	$7.59B	USD	Annual
Net investment income	`NetInvestmentIncome`	$734.53M	USD	Annual
Net investment income	`NetInvestmentIncome`	$367.42M	USD	Annual
Net investment income	`NetInvestmentIncome`	$446.75M	USD	Annual
Net investment gains (losses)	`NetInvestmentGainsLosses`	$-1.60B	USD	Annual
Net investment gains (losses)	`NetInvestmentGainsLosses`	$1.98B	USD	Annual
Net investment gains (losses)	`NetInvestmentGainsLosses`	$1.52B	USD	Annual
Products revenues	`ProductsRevenues`	$2.43B	USD	Annual
Products revenues	`ProductsRevenues`	$2.55B	USD	Annual
Products revenues	`ProductsRevenues`	$1.71B	USD	Annual
Services and other revenues	`Servicesandotherrevenues`	$2.70B	USD	Annual
Services and other revenues	`Servicesandotherrevenues`	$2.81B	USD	Annual
Services and other revenues	`Servicesandotherrevenues`	$2.29B	USD	Annual
Total operating revenues	`Revenues`	$12.85B	USD	Annual
Total operating revenues	`Revenues`	$11.68B	USD	Annual
Total operating revenues	`Revenues`	$15.80B	USD	Annual
Losses and loss adjustment expenses	`IncurredClaimsPropertyCasualtyAndLiability`	$4.45B	USD	Annual
Losses and loss adjustment expenses	`IncurredClaimsPropertyCasualtyAndLiability`	$5.32B	USD	Annual
Losses and loss adjustment expenses	`IncurredClaimsPropertyCasualtyAndLiability`	$3.58B	USD	Annual
Underwriting, acquisition and insurance expenses	`UnderwritingAcquisitionAndInsuranceExpenses`	$2.29B	USD	Annual
Underwriting, acquisition and insurance expenses	`UnderwritingAcquisitionAndInsuranceExpenses`	$2.84B	USD	Annual
Underwriting, acquisition and insurance expenses	`UnderwritingAcquisitionAndInsuranceExpenses`	$2.52B	USD	Annual
Products expenses	`Productsexpenses`	$2.24B	USD	Annual
Products expenses	`Productsexpenses`	$2.22B	USD	Annual
Products expenses	`Productsexpenses`	$1.54B	USD	Annual
Services and other expenses	`Servicesandotherexpenses`	$2.31B	USD	Annual
Services and other expenses	`Servicesandotherexpenses`	$2.02B	USD	Annual
Services and other expenses	`Servicesandotherexpenses`	$2.31B	USD	Annual
Amortization of intangible assets	`AmortizationOfIntangibleAssets`	$178.78M	USD	Annual
Amortization of intangible assets	`AmortizationOfIntangibleAssets`	$180.61M	USD	Annual
Amortization of intangible assets	`AmortizationOfIntangibleAssets`	$160.54M	USD	Annual
Impairment of goodwill	`GoodwillImpairmentLoss`	-	USD	Annual
Impairment of goodwill	`GoodwillImpairmentLoss`	-	USD	Annual
Impairment of goodwill	`GoodwillImpairmentLoss`	$80.00M	USD	Annual
Total Operating Expenses	`CostsAndExpenses`	$12.87B	USD	Annual
Total Operating Expenses	`CostsAndExpenses`	$9.60B	USD	Annual
Total Operating Expenses	`CostsAndExpenses`	$11.77B	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$3.24B	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$-93.34M	USD	Annual
Operating Income (Loss)	`OperatingIncomeLoss`	$2.93B	USD	Annual
Interest expense	`InterestExpense`	$185.08M	USD	Annual
Interest expense	`InterestExpense`	$196.06M	USD	Annual
Interest expense	`InterestExpense`	$183.58M	USD	Annual
Net foreign exchange gains (losses)	`ForeignCurrencyTransactionGainLossRealized`	$137.83M	USD	Annual
Net foreign exchange gains (losses)	`ForeignCurrencyTransactionGainLossRealized`	$71.90M	USD	Annual
Net foreign exchange gains (losses)	`ForeignCurrencyTransactionGainLossRealized`	$-90.05M	USD	Annual
Income (Loss) Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$3.13B	USD	Annual
Income (Loss) Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-151.57M	USD	Annual
Income (Loss) Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$2.65B	USD	Annual
Income tax (expense) benefit	`IncomeTaxExpenseBenefit`	$-48.21M	USD	Annual
Income tax (expense) benefit	`IncomeTaxExpenseBenefit`	$552.62M	USD	Annual
Income tax (expense) benefit	`IncomeTaxExpenseBenefit`	$683.96M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$-103.36M	USD	Annual
Net Income (Loss)	`ProfitLoss`	$2.10B	USD	Annual
Net Income (Loss)	`ProfitLoss`	$2.45B	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$105.03M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$22.73M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$112.92M	USD	Annual
Net Income (Loss) to Shareholders	`NetIncomeLoss`	$2.00B	USD	Annual
Net Income (Loss) to Shareholders	`NetIncomeLoss`	$-216.28M	USD	Annual
Net Income (Loss) to Shareholders	`NetIncomeLoss`	$2.42B	USD	Annual
Preferred stock dividends	`PreferredStockDividendsIncomeStatementImpact`	$36.00M	USD	Annual
Preferred stock dividends	`PreferredStockDividendsIncomeStatementImpact`	$36.00M	USD	Annual
Preferred stock dividends	`PreferredStockDividendsIncomeStatementImpact`	$36.00M	USD	Annual
Net Income (Loss) to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-252.28M	USD	Annual
Net Income (Loss) to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$1.96B	USD	Annual
Net Income (Loss) to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$2.39B	USD	Annual
Net holding gains (losses) arising during the period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$278.36M	USD	Annual
Net holding gains (losses) arising during the period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-398.08M	USD	Annual
Net holding gains (losses) arising during the period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-1.20B	USD	Annual
Reclassification adjustments for net gains (losses) included in net income (loss)	`ReclassificationAdjustmentsForNetGainsLossesIncludedInNetIncomeLoss`	$-44.91M	USD	Annual
Reclassification adjustments for net gains (losses) included in net income (loss)	`ReclassificationAdjustmentsForNetGainsLossesIncludedInNetIncomeLoss`	$6.62M	USD	Annual
Reclassification adjustments for net gains (losses) included in net income (loss)	`ReclassificationAdjustmentsForNetGainsLossesIncludedInNetIncomeLoss`	$-28.54M	USD	Annual
Change in net unrealized gains (losses) on available-for-sale investments, net of taxes	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-1.15B	USD	Annual
Change in net unrealized gains (losses) on available-for-sale investments, net of taxes	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$306.90M	USD	Annual
Change in net unrealized gains (losses) on available-for-sale investments, net of taxes	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-404.70M	USD	Annual
Change in discount rate for life and annuity benefits, net of taxes	`OciLiabilityForFuturePolicyBenefitGainLossAfterReclassificationAdjustmentAndTaxParent`	$149.87M	USD	Annual
Change in discount rate for life and annuity benefits, net of taxes	`OciLiabilityForFuturePolicyBenefitGainLossAfterReclassificationAdjustmentAndTaxParent`	$-22.34M	USD	Annual
Change in discount rate for life and annuity benefits, net of taxes	`OciLiabilityForFuturePolicyBenefitGainLossAfterReclassificationAdjustmentAndTaxParent`	$49.41M	USD	Annual
Change in foreign currency translation adjustments, net of taxes	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-9.26M	USD	Annual
Change in foreign currency translation adjustments, net of taxes	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$4.70M	USD	Annual
Change in foreign currency translation adjustments, net of taxes	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-213.00K	USD	Annual
Change in net actuarial pension loss, net of taxes	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-24.73M	USD	Annual
Change in net actuarial pension loss, net of taxes	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-8.39M	USD	Annual
Change in net actuarial pension loss, net of taxes	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-74.00K	USD	Annual
Total Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$289.34M	USD	Annual
Total Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-347.11M	USD	Annual
Total Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-989.49M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-1.09B	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$2.10B	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$2.39B	USD	Annual
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$105.08M	USD	Annual
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$112.94M	USD	Annual
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$22.73M	USD	Annual
Comprehensive Income (Loss) to Shareholders	`ComprehensiveIncomeNetOfTax`	$2.29B	USD	Annual
Comprehensive Income (Loss) to Shareholders	`ComprehensiveIncomeNetOfTax`	$-1.21B	USD	Annual
Comprehensive Income (Loss) to Shareholders	`ComprehensiveIncomeNetOfTax`	$2.08B	USD	Annual
Basic (dollars per share)	`EarningsPerShareBasic`	$176.79	USD	Annual
Basic (dollars per share)	`EarningsPerShareBasic`	$147.32	USD	Annual
Basic (dollars per share)	`EarningsPerShareBasic`	$-23.72	USD	Annual
Diluted (dollars per share)	`EarningsPerShareDiluted`	$-23.72	USD	Annual
Diluted (dollars per share)	`EarningsPerShareDiluted`	$176.38	USD	Annual
Diluted (dollars per share)	`EarningsPerShareDiluted`	$146.98	USD	Annual

Cash Flow Statement 128 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$-103.36M	USD	Annual
Net income (loss)	`ProfitLoss`	$2.10B	USD	Annual
Net income (loss)	`ProfitLoss`	$2.45B	USD	Annual
Deferred income tax expense (benefit)	`IncreaseDecreaseInDeferredIncomeTaxes`	$-453.41M	USD	Annual
Deferred income tax expense (benefit)	`IncreaseDecreaseInDeferredIncomeTaxes`	$-233.80M	USD	Annual
Deferred income tax expense (benefit)	`IncreaseDecreaseInDeferredIncomeTaxes`	$282.32M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$259.92M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$336.39M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$366.95M	USD	Annual
Net investment losses (gains)	`RealizedInvestmentGainsLosses`	$1.98B	USD	Annual
Net investment losses (gains)	`RealizedInvestmentGainsLosses`	$1.52B	USD	Annual
Net investment losses (gains)	`RealizedInvestmentGainsLosses`	$-1.60B	USD	Annual
Net foreign exchange losses (gains)	`ForeignCurrencyTransactionGainLossRealized`	$137.83M	USD	Annual
Net foreign exchange losses (gains)	`ForeignCurrencyTransactionGainLossRealized`	$71.90M	USD	Annual
Net foreign exchange losses (gains)	`ForeignCurrencyTransactionGainLossRealized`	$-90.05M	USD	Annual
Gain on sale of businesses, net	`GainLossOnSaleOfBusiness`	$18.96M	USD	Annual
Gain on sale of businesses, net	`GainLossOnSaleOfBusiness`	$22.09M	USD	Annual
Gain on sale of businesses, net	`GainLossOnSaleOfBusiness`	$225.83M	USD	Annual
Impairment of goodwill	`GoodwillImpairmentLoss`	-	USD	Annual
Impairment of goodwill	`GoodwillImpairmentLoss`	-	USD	Annual
Impairment of goodwill	`GoodwillImpairmentLoss`	$80.00M	USD	Annual
Increase in receivables	`IncreaseDecreaseInReceivables`	$372.49M	USD	Annual
Increase in receivables	`IncreaseDecreaseInReceivables`	$653.26M	USD	Annual
Increase in receivables	`IncreaseDecreaseInReceivables`	$486.31M	USD	Annual
Increase in reinsurance recoverables	`IncreaseDecreaseInReinsuranceRecoverable`	$1.17B	USD	Annual
Increase in reinsurance recoverables	`IncreaseDecreaseInReinsuranceRecoverable`	$1.31B	USD	Annual
Increase in reinsurance recoverables	`IncreaseDecreaseInReinsuranceRecoverable`	$767.51M	USD	Annual
Increase in deferred policy acquisition costs	`IncreaseDecreaseInDeferredPolicyAcquisitionCosts`	$139.61M	USD	Annual
Increase in deferred policy acquisition costs	`IncreaseDecreaseInDeferredPolicyAcquisitionCosts`	$1.60M	USD	Annual
Increase in deferred policy acquisition costs	`IncreaseDecreaseInDeferredPolicyAcquisitionCosts`	$140.63M	USD	Annual
Increase in prepaid reinsurance premiums	`IncreaseDecreaseInPrepaidReinsurancePremiums`	$347.98M	USD	Annual
Increase in prepaid reinsurance premiums	`IncreaseDecreaseInPrepaidReinsurancePremiums`	$271.29M	USD	Annual
Increase in prepaid reinsurance premiums	`IncreaseDecreaseInPrepaidReinsurancePremiums`	$298.05M	USD	Annual
Increase in unpaid losses and loss adjustment expenses	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$2.04B	USD	Annual
Increase in unpaid losses and loss adjustment expenses	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$2.38B	USD	Annual
Increase in unpaid losses and loss adjustment expenses	`IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve`	$2.44B	USD	Annual
Decrease in life and annuity benefits	`IncreaseDecreaseInLifeInsuranceLiabilities`	$-52.23M	USD	Annual
Decrease in life and annuity benefits	`IncreaseDecreaseInLifeInsuranceLiabilities`	$-48.33M	USD	Annual
Decrease in life and annuity benefits	`IncreaseDecreaseInLifeInsuranceLiabilities`	$-44.69M	USD	Annual
Increase in unearned premiums	`IncreaseDecreaseInUnearnedPremiums`	$886.39M	USD	Annual
Increase in unearned premiums	`IncreaseDecreaseInUnearnedPremiums`	$400.02M	USD	Annual
Increase in unearned premiums	`IncreaseDecreaseInUnearnedPremiums`	$970.25M	USD	Annual
Increase in payables to insurance and reinsurance companies	`IncreaseDecreaseInReinsurancePayables`	$365.38M	USD	Annual
Increase in payables to insurance and reinsurance companies	`IncreaseDecreaseInReinsurancePayables`	$210.81M	USD	Annual
Increase in payables to insurance and reinsurance companies	`IncreaseDecreaseInReinsurancePayables`	$131.56M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-191.19M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-213.99M	USD	Annual
Other	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-38.19M	USD	Annual
Net Cash Provided By Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$2.27B	USD	Annual
Net Cash Provided By Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$2.79B	USD	Annual
Net Cash Provided By Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$2.71B	USD	Annual
Proceeds from sales, maturities, calls and prepayments of fixed maturity securities	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$708.11M	USD	Annual
Proceeds from sales, maturities, calls and prepayments of fixed maturity securities	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$1.15B	USD	Annual
Proceeds from sales, maturities, calls and prepayments of fixed maturity securities	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$2.13B	USD	Annual
Cost of fixed maturity securities purchased	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$3.17B	USD	Annual
Cost of fixed maturity securities purchased	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$4.30B	USD	Annual
Cost of fixed maturity securities purchased	`PaymentsToAcquireAvailableForSaleSecuritiesDebt`	$2.11B	USD	Annual
Proceeds from sales of equity securities	`ProceedsFromSaleOfEquitySecuritiesFvNi`	$298.58M	USD	Annual
Proceeds from sales of equity securities	`ProceedsFromSaleOfEquitySecuritiesFvNi`	$200.57M	USD	Annual
Proceeds from sales of equity securities	`ProceedsFromSaleOfEquitySecuritiesFvNi`	$242.01M	USD	Annual
Cost of equity securities purchased	`PaymentsToAcquireEquitySecuritiesFvNi`	$638.31M	USD	Annual
Cost of equity securities purchased	`PaymentsToAcquireEquitySecuritiesFvNi`	$255.44M	USD	Annual
Cost of equity securities purchased	`PaymentsToAcquireEquitySecuritiesFvNi`	$442.99M	USD	Annual
Net change in short-term investments	`PaymentsForProceedsFromShortTermInvestments`	$846.02M	USD	Annual
Net change in short-term investments	`PaymentsForProceedsFromShortTermInvestments`	$-202.93M	USD	Annual
Net change in short-term investments	`PaymentsForProceedsFromShortTermInvestments`	$-228.96M	USD	Annual
Payments to Acquire Equity Method Investments	`PaymentsToAcquireEquityMethodInvestments`	$20.05M	USD	Annual
Payments to Acquire Equity Method Investments	`PaymentsToAcquireEquityMethodInvestments`	$48.92M	USD	Annual
Payments to Acquire Equity Method Investments	`PaymentsToAcquireEquityMethodInvestments`	$192.72M	USD	Annual
Additions to property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$145.25M	USD	Annual
Additions to property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$258.62M	USD	Annual
Additions to property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$254.71M	USD	Annual
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$517.44M	USD	Annual
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$3.58M	USD	Annual
Acquisitions, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$79.00M	USD	Annual
Consolidation of Markel CATCo Re, net	`ConsolidationOfMarkelCATCoReNet`	-	USD	Annual
Consolidation of Markel CATCo Re, net	`ConsolidationOfMarkelCATCoReNet`	-	USD	Annual
Consolidation of Markel CATCo Re, net	`ConsolidationOfMarkelCATCoReNet`	$629.96M	USD	Annual
Distributions to Markel CATCo Re noncontrolling interests for buy-out transaction	`DistributionsToMarkelCATCoReNoncontrollingInterestsForBuyOutTransaction`	-	USD	Annual
Distributions to Markel CATCo Re noncontrolling interests for buy-out transaction	`DistributionsToMarkelCATCoReNoncontrollingInterestsForBuyOutTransaction`	-	USD	Annual
Distributions to Markel CATCo Re noncontrolling interests for buy-out transaction	`DistributionsToMarkelCATCoReNoncontrollingInterestsForBuyOutTransaction`	$169.38M	USD	Annual
Proceeds from sale of businesses, net	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$40.72M	USD	Annual
Proceeds from sale of businesses, net	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$201.37M	USD	Annual
Proceeds from sale of businesses, net	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$41.30M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-28.34M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-16.21M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$-23.08M	USD	Annual
Net Cash Used By Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.70B	USD	Annual
Net Cash Used By Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.67B	USD	Annual
Net Cash Used By Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.94B	USD	Annual
Additions to senior long-term debt and other debt	`ProceedsFromIssuanceOfDebt`	$1.03B	USD	Annual
Additions to senior long-term debt and other debt	`ProceedsFromIssuanceOfDebt`	$1.20B	USD	Annual
Additions to senior long-term debt and other debt	`ProceedsFromIssuanceOfDebt`	$624.97M	USD	Annual
Repayment of senior long-term debt and other debt	`RepaymentsOfDebt`	$1.26B	USD	Annual
Repayment of senior long-term debt and other debt	`RepaymentsOfDebt`	$949.64M	USD	Annual
Repayment of senior long-term debt and other debt	`RepaymentsOfDebt`	$486.73M	USD	Annual
Repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$445.48M	USD	Annual
Repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$290.80M	USD	Annual
Repurchases of common stock	`PaymentsForRepurchaseOfCommonStock`	$206.52M	USD	Annual
Dividends paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$36.00M	USD	Annual
Dividends paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$36.00M	USD	Annual
Dividends paid on preferred stock	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$36.00M	USD	Annual
Purchase of noncontrolling interests	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$30.00K	USD	Annual
Purchase of noncontrolling interests	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$63.37M	USD	Annual
Purchase of noncontrolling interests	`PaymentsForRepurchaseOfRedeemableNoncontrollingInterest`	$57.13M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	-	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	-	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$89.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-41.20M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-47.53M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-42.36M	USD	Annual
Net Cash Provided (Used) By Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$369.77M	USD	Annual
Net Cash Provided (Used) By Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-999.72M	USD	Annual
Net Cash Provided (Used) By Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-595.31M	USD	Annual
Effect of foreign currency rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-103.36M	USD	Annual
Effect of foreign currency rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-41.73M	USD	Annual
Effect of foreign currency rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$27.04M	USD	Annual
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$340.57M	USD	Annual
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-335.70M	USD	Annual
Increase (decrease) in cash, cash equivalents, restricted cash and restricted cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-889.48M	USD	Annual
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.33B	USD	Point-in-time
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$5.22B	USD	Point-in-time
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$5.22B	USD	Point-in-time
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.88B	USD	Point-in-time
CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS AT END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.33B	USD	Point-in-time
CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS AT END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$5.22B	USD	Point-in-time
CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS AT END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$5.22B	USD	Point-in-time
CASH, CASH EQUIVALENTS, RESTRICTED CASH AND RESTRICTED CASH EQUIVALENTS AT END OF YEAR	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.88B	USD	Point-in-time

Stockholders Equity 19 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$13.21B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$15.06B	USD	Point-in-time
Balance, redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCommonCarryingAmount`	$523.15M	USD	Point-in-time
Balance, redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCommonCarryingAmount`	$469.69M	USD	Point-in-time
Net income (loss)	`ProfitLoss`	$-103.36M	USD	Annual
Net income (loss)	`ProfitLoss`	$2.10B	USD	Annual
Net income (loss)	`ProfitLoss`	$2.45B	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$289.34M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-347.11M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-989.49M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-1.09B	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$2.10B	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$2.39B	USD	Annual
Preferred stock dividends	`DividendsPreferredStock`	$36.00M	USD	Annual
Preferred stock dividends	`DividendsPreferredStock`	$36.00M	USD	Annual
Balance, redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCommonCarryingAmount`	$523.15M	USD	Point-in-time
Balance, redeemable noncontrolling interests	`RedeemableNoncontrollingInterestEquityCommonCarryingAmount`	$469.69M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$13.21B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$15.06B	USD	Point-in-time

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.