$WTM
WHITE MOUNTAINS INSURANCE GROUP LTD Stock $wtm

$wtm Overview Financials Valuation SEC Filings Company Website

2024 Q3 Form 10-Q Financial Statement

#000077686724000015 Filed on August 07, 2024

Income Statement

Concept	2024 Q3	2024 Q2	2023 Q2
Revenue	$839.1M	$395.4M	$378.4M
YoY Change	61.49%	4.49%	393.35%
Cost Of Revenue	$7.600M	$7.000M	$11.60M
YoY Change	-5.0%	-39.66%	-48.21%
Gross Profit	$831.5M	$388.4M	$366.8M
YoY Change	62.53%	5.89%	575.51%
Gross Profit Margin	99.09%	98.23%	96.93%
Selling, General & Admin	$145.4M	$142.2M	$114.2M
YoY Change	35.13%	24.52%	-6.93%
% of Gross Profit	17.49%	36.61%	31.13%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$106.4M	$75.90M	-$24.10M
YoY Change	15.15%	-414.94%	14.76%
% of Gross Profit	12.8%	19.54%	-6.57%
Operating Expenses	$582.9M	$415.3M	$344.6M
YoY Change	20.73%	20.52%	15.17%
Operating Profit	$248.6M	-$26.90M	$22.20M
YoY Change	763.19%	-221.17%	-109.06%
Interest Expense	$16.70M	$14.80M	-$16.40M
YoY Change	6.37%	-190.24%	62.38%
% of Operating Profit	6.72%		-73.87%
Other Income/Expense, Net
YoY Change
Pretax Income	$239.5M	-$34.70M	$17.40M
YoY Change	1035.07%	-299.43%	-107.48%
Income Tax	$11.60M	$6.500M	$200.0K
% Of Pretax Income	4.84%		1.15%
Net Earnings	$179.0M	-$54.60M	$19.60M
YoY Change	658.47%	-378.57%	-111.58%
Net Earnings / Revenue	21.33%	-13.81%	5.18%
Basic Earnings Per Share	$69.68	-$21.24	$7.65
Diluted Earnings Per Share	$69.68	-$21.24	$7.65
COMMON SHARES
Basic Shares Outstanding	2.568M shares	2.566M shares	2.563M shares
Diluted Shares Outstanding	2.533M shares	2.532M shares	2.525M shares

Balance Sheet

Concept	2024 Q3	2024 Q2	2023 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$346.0M	$255.2M	$154.5M
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
YoY Change
Goodwill	$439.2M	$439.2M	$168.8M
YoY Change	160.19%	160.19%	-16.35%
Intangibles	$286.5M	$291.8M	$204.8M
YoY Change	40.92%	42.48%	4.38%
Long-Term Investments	$6.774B	$6.439B	$5.633B
YoY Change	15.54%	14.31%	39.91%
Other Assets	$71.00M	$64.10M
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$10.34B	$10.17B	$8.376B
YoY Change	26.95%	21.38%	9.34%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$84.10M	$75.80M	$65.70M
YoY Change	0.24%	15.37%	-31.42%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$84.10M	$75.80M	$65.70M
YoY Change	0.24%	15.37%	-31.42%
LONG-TERM LIABILITIES
Long-Term Debt	$544.9M	$530.2M	$566.1M
YoY Change	-3.51%	-6.34%	-8.41%
Other Long-Term Liabilities	$470.8M	$426.5M	$270.4M
YoY Change	49.46%	57.73%	-62.42%
Total Long-Term Liabilities	$1.016B	$956.7M	$836.5M
YoY Change	15.46%	14.37%	-37.46%
TOTAL LIABILITIES
Total Short-Term Liabilities	$84.10M	$75.80M	$65.70M
Total Long-Term Liabilities	$1.016B	$956.7M	$836.5M
Total Liabilities	$5.078B	$5.295B	$4.250B
YoY Change	27.63%	24.57%	1.95%
SHAREHOLDERS EQUITY
Retained Earnings	$4.048B	$3.863B	$3.381B
YoY Change	18.92%	14.27%	24.06%
Common Stock	$2.600M	$2.600M	$2.600M
YoY Change	0.0%	0.0%	-10.34%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.611B	$4.423B	$3.922B
YoY Change
Total Liabilities & Shareholders Equity	$10.34B	$10.17B	$8.376B
YoY Change	26.95%	21.38%	9.34%

Cashflow Statement

Concept	2024 Q3	2024 Q2	2023 Q2
OPERATING ACTIVITIES
Net Income	$179.0M	-$54.60M	$19.60M
YoY Change	658.47%	-378.57%	-111.58%
Depreciation, Depletion And Amortization	$106.4M	$75.90M	-$24.10M
YoY Change	15.15%	-414.94%	14.76%
Cash From Operating Activities	$269.4M	$216.8M	$71.10M
YoY Change	20.86%	204.92%	30.46%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$189.6M	-$194.8M	-$126.2M
YoY Change	-18.35%	54.36%	18.39%
Cash From Investing Activities	-$189.6M	-$194.8M	-$126.2M
YoY Change	-18.35%	54.36%	18.39%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	11.00M	7.900M	6.900M
YoY Change	-37.5%	14.49%	-96.87%
NET CHANGE
Cash From Operating Activities	269.4M	216.8M	71.10M
Cash From Investing Activities	-189.6M	-194.8M	-126.2M
Cash From Financing Activities	11.00M	7.900M	6.900M
Net Change In Cash	90.80M	29.90M	-48.20M
YoY Change	993.98%	-162.03%	-128.61%
FREE CASH FLOW
Cash From Operating Activities	$269.4M	$216.8M	$71.10M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Gain Loss On Investments GainLossOnInvestments	209500000	usd
CY2024Q2	us-gaap	Assets Assets	10166900000	usd
CY2023Q4	us-gaap	Assets Assets	8385900000	usd
CY2024Q2	us-gaap	Revenues Revenues	395400000	usd
CY2023Q2	us-gaap	Revenues Revenues	378400000	usd
	us-gaap	Revenues Revenues	1042700000	usd
	us-gaap	Revenues Revenues	910300000	usd
CY2024Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	430100000	usd
CY2023Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	361000000.0	usd
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	844800000	usd
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	693800000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-34700000	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	17400000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	197900000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	216500000	usd
CY2024Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	6500000	usd
CY2023Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	200000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17300000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12100000	usd
CY2024Q2	us-gaap	Profit Loss ProfitLoss	-41200000	usd
CY2023Q2	us-gaap	Profit Loss ProfitLoss	17200000	usd
	us-gaap	Profit Loss ProfitLoss	180600000	usd
	us-gaap	Profit Loss ProfitLoss	204400000	usd
CY2024Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	13400000	usd
CY2023Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2400000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1200000	usd
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	5300000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-54600000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	19600000	usd
	us-gaap	Net Income Loss NetIncomeLoss	181800000	usd
	us-gaap	Net Income Loss NetIncomeLoss	199100000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-54600000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	19600000	usd
	us-gaap	Net Income Loss NetIncomeLoss	181800000	usd
	us-gaap	Net Income Loss NetIncomeLoss	199100000	usd
CY2024Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	100000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1400000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-200000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2600000	usd
CY2024Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-54500000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	21000000.0	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	181600000	usd
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	201700000	usd
CY2024Q2	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	100000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	400000	usd
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	0	usd
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	800000	usd
CY2024Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-54600000	usd
CY2023Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	20600000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	181600000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	200900000	usd
CY2024Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-21.24
CY2023Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	7.65
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	70.93
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	77.57
CY2024Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2023Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2024Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-21.24
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	7.65
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	70.93
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	77.57
CY2024Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-21.24
CY2023Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	7.65
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	70.93
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	77.57
CY2024Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2023Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2024Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2024Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
CY2023Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2023Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.00
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.00
	us-gaap	Profit Loss ProfitLoss	180600000	usd
	us-gaap	Profit Loss ProfitLoss	204400000	usd
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-400000	usd
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	-4500000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	7500000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	7200000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	-4800000	usd
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	-5000000.0	usd
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	13300000	usd
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-200000	usd
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	421800000	usd
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	74400000	usd
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	605800000	usd
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	532900000	usd
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	101600000	usd
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	106300000	usd
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	296200000	usd
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	124500000	usd
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	816000000.0	usd
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	758700000	usd
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	286200000	usd
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	-4100000	usd
	wtm	Increase Decrease In Premiums And Commissions Payable IncreaseDecreaseInPremiumsAndCommissionsPayable	29600000	usd
	wtm	Increase Decrease In Premiums And Commissions Payable IncreaseDecreaseInPremiumsAndCommissionsPayable	0	usd
	wtm	Payments For Participation Contracts PaymentsForParticipationContracts	200000	usd
	wtm	Payments For Participation Contracts PaymentsForParticipationContracts	81600000	usd
	wtm	Proceeds From Sale Of Participation Contracts ProceedsFromSaleOfParticipationContracts	9400000	usd
	wtm	Proceeds From Sale Of Participation Contracts ProceedsFromSaleOfParticipationContracts	74600000	usd
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	84200000	usd
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-5800000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	253300000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	156700000	usd
	wtm	Payments For Proceeds From Other Short Term Investments PaymentsForProceedsFromOtherShortTermInvestments	-317300000	usd
	wtm	Payments For Proceeds From Other Short Term Investments PaymentsForProceedsFromOtherShortTermInvestments	42600000	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	262200000	usd
	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	90500000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	228300000	usd
	us-gaap	Proceeds From Maturities Repayments And Calls Of Trading Securities Heldforinvestment ProceedsFromMaturitiesRepaymentsAndCallsOfTradingSecuritiesHeldforinvestment	146300000	usd
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	162400000	usd
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	119200000	usd
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	116100000	usd
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	18700000	usd
	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	0.0	usd
	us-gaap	Cash Divested From Deconsolidation CashDivestedFromDeconsolidation	800000	usd
	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	0	usd
	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	17300000	usd
	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	44900000	usd
	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0.0	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	231800000	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
	wtm	Payments To Acquire Trading Fixed Maturities Investments PaymentsToAcquireTradingFixedMaturitiesInvestments	732600000	usd
	wtm	Payments To Acquire Trading Fixed Maturities Investments PaymentsToAcquireTradingFixedMaturitiesInvestments	240500000	usd
	wtm	Payments To Acquire Equity Securities And Equity Method Investments PaymentsToAcquireEquitySecuritiesAndEquityMethodInvestments	121100000	usd
	wtm	Payments To Acquire Equity Securities And Equity Method Investments PaymentsToAcquireEquitySecuritiesAndEquityMethodInvestments	104200000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	109900000	usd
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	215900000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-14900000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	11600000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-94200000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-222800000	usd
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	usd
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	12000000.0	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	34100000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	23100000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	2500000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	2600000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	8100000	usd
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	32700000	usd
	wtm	Proceeds From Member Surplus Contributions ProceedsFromMemberSurplusContributions	26000000.0	usd
	wtm	Proceeds From Member Surplus Contributions ProceedsFromMemberSurplusContributions	26500000	usd
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-10100000	usd
	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-7500000	usd
	wtm	Payments For Collateralized Financial Guarantee PaymentsForCollateralizedFinancialGuarantee	6900000	usd
	wtm	Payments For Collateralized Financial Guarantee PaymentsForCollateralizedFinancialGuarantee	6900000	usd
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	9400000	usd
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-100000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-26300000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-34400000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Continuing Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectContinuingOperations	132800000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Continuing Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffectContinuingOperations	-100500000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	700000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	12200000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	122400000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	255000000.0	usd
CY2023Q2	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	13400000	usd
CY2023Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	154500000	usd
	us-gaap	Interest Paid Net InterestPaidNet	31400000	usd
	us-gaap	Interest Paid Net InterestPaidNet	11600000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	14400000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	27800000	usd
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	segment
	wtm	Management Rollover Shareholders Additional Shares Percentage ManagementRolloverShareholdersAdditionalSharesPercentage	0.123
CY2024Q2	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	58200000	usd
CY2023Q2	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	43400000	usd
	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	115900000	usd
	us-gaap	Gross Investment Income Operating GrossInvestmentIncomeOperating	83000000.0	usd
CY2024Q2	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	800000	usd
CY2023Q2	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	400000	usd
	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	1500000	usd
	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	1000000.0	usd
CY2024Q2	us-gaap	Net Investment Income NetInvestmentIncome	57400000	usd
CY2023Q2	us-gaap	Net Investment Income NetInvestmentIncome	43000000.0	usd
	us-gaap	Net Investment Income NetInvestmentIncome	114400000	usd
	us-gaap	Net Investment Income NetInvestmentIncome	82000000.0	usd
CY2024Q2	us-gaap	Gain Loss On Investments GainLossOnInvestments	-60200000	usd
CY2023Q2	us-gaap	Gain Loss On Investments GainLossOnInvestments	11400000	usd
	us-gaap	Gain Loss On Investments GainLossOnInvestments	166600000	usd
CY2024Q2	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	537000000.0	usd
	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	100600000	usd
	us-gaap	Equity Securities Fv Ni Unrealized Loss EquitySecuritiesFvNiUnrealizedLoss	0	usd
	wtm	Equity Securities Fnni Net Foreign Currency Gain Loss EquitySecuritiesFNNINetForeignCurrencyGainLoss	-6800000	usd
CY2024Q2	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	630800000	usd
CY2024Q2	wtm	Other Long Term Investments Cost OtherLongTermInvestmentsCost	1639500000	usd
	wtm	Other Long Term Investments Unrealized Gain OtherLongTermInvestmentsUnrealizedGain	501500000	usd
	wtm	Other Long Term Investments Unrealized Loss OtherLongTermInvestmentsUnrealizedLoss	102600000	usd
	wtm	Other Long Term Investments Net Foreign Currency Gain Loss OtherLongTermInvestmentsNetForeignCurrencyGainLoss	-16000000.0	usd
CY2024Q2	us-gaap	Other Long Term Investments OtherLongTermInvestments	2022400000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Cost EquitySecuritiesFvNiCost	483500000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain EquitySecuritiesFvNiUnrealizedGain	62300000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Loss EquitySecuritiesFvNiUnrealizedLoss	1200000	usd
CY2023	wtm	Equity Securities Fnni Net Foreign Currency Gain Loss EquitySecuritiesFNNINetForeignCurrencyGainLoss	-6200000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	538400000	usd
CY2023Q4	wtm	Other Long Term Investments Cost OtherLongTermInvestmentsCost	1655700000	usd
CY2023	wtm	Other Long Term Investments Unrealized Gain OtherLongTermInvestmentsUnrealizedGain	446300000	usd
CY2023	wtm	Other Long Term Investments Unrealized Loss OtherLongTermInvestmentsUnrealizedLoss	94500000	usd
CY2023	wtm	Other Long Term Investments Net Foreign Currency Gain Loss OtherLongTermInvestmentsNetForeignCurrencyGainLoss	-9300000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	1998200000	usd
CY2024Q2	wtm	Funds Held Under Reinsurance Agreements Assets Investments FundsHeldUnderReinsuranceAgreementsAssetsInvestments	611800000	usd
CY2023Q4	wtm	Funds Held Under Reinsurance Agreements Assets Investments FundsHeldUnderReinsuranceAgreementsAssetsInvestments	585600000	usd
CY2024Q2	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	4800000	usd
CY2023Q4	us-gaap	Assets Held By Insurance Regulators AssetsHeldByInsuranceRegulators	4600000	usd
CY2024Q2	us-gaap	Other Long Term Investments OtherLongTermInvestments	2022400000	usd
CY2023Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	1998200000	usd
CY2024Q2	wtm	Other Long Term Investments Remaining Period One To Three Years OtherLongTermInvestmentsRemainingPeriodOneToThreeYears	18400000	usd
CY2024Q2	wtm	Other Long Term Investments Remaining Period Three To Five Years OtherLongTermInvestmentsRemainingPeriodThreeToFiveYears	60100000	usd
CY2024Q2	wtm	Other Long Term Investments Remaining Period Five To Ten Years OtherLongTermInvestmentsRemainingPeriodFiveToTenYears	182200000	usd
CY2024Q2	wtm	Other Long Term Investments Remaining Period Greater Than10 Years OtherLongTermInvestmentsRemainingPeriodGreaterThan10Years	3300000	usd
CY2024Q2	us-gaap	Goodwill Goodwill	439200000	usd
CY2024Q2	us-gaap	Goodwill Goodwill	439200000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	168800000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	168800000	usd
CY2024Q2	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	320100000	usd
CY2023Q4	us-gaap	Intangible Assets Gross Excluding Goodwill IntangibleAssetsGrossExcludingGoodwill	218800000	usd
CY2024Q2	wtm	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	759300000	usd
CY2024Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	28300000	usd
CY2024Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	731000000.0	usd
CY2023Q4	wtm	Intangible Assets Gross Including Goodwill IntangibleAssetsGrossIncludingGoodwill	387600000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	17000000.0	usd
CY2023Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	370600000	usd
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2023Q2	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2024Q2	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	usd
CY2024Q1	us-gaap	Goodwill Goodwill	439200000	usd
CY2024Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	297400000	usd
CY2024Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	736600000	usd
CY2023Q1	us-gaap	Goodwill Goodwill	168800000	usd
CY2023Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	207400000	usd
CY2023Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	376200000	usd
CY2024Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5600000	usd
CY2024Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5600000	usd
CY2023Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2600000	usd
CY2023Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2600000	usd
CY2024Q2	us-gaap	Goodwill Goodwill	439200000	usd
CY2024Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	291800000	usd
CY2024Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	731000000.0	usd
CY2023Q2	us-gaap	Goodwill Goodwill	168800000	usd
CY2023Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	204800000	usd
CY2023Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	373600000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	168800000	usd
CY2023Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	201800000	usd
CY2023Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	370600000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	176500000	usd
CY2022Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	215900000	usd
CY2022Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	392400000	usd
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	270400000	usd
	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	101000000.0	usd
	wtm	Goodwill And Indefinite Lived Intangible Assets Acquired During Period GoodwillAndIndefiniteLivedIntangibleAssetsAcquiredDuringPeriod	371400000	usd
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	usd
	us-gaap	Indefinitelived Intangible Assets Acquired IndefinitelivedIntangibleAssetsAcquired	0	usd
	wtm	Goodwill And Indefinite Lived Intangible Assets Acquired During Period GoodwillAndIndefiniteLivedIntangibleAssetsAcquiredDuringPeriod	0	usd
	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	300000	usd
	wtm	Goodwill And Finite Lived Intangible Assets Acquired During Period GoodwillAndFiniteLivedIntangibleAssetsAcquiredDuringPeriod	300000	usd
	us-gaap	Finitelived Intangible Assets Acquired1 FinitelivedIntangibleAssetsAcquired1	0	usd
	wtm	Goodwill And Finite Lived Intangible Assets Acquired During Period GoodwillAndFiniteLivedIntangibleAssetsAcquiredDuringPeriod	0	usd
	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	0	usd
	us-gaap	Indefinite Lived Intangible Assets Written Off Related To Sale Of Business Unit IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit	0	usd
	wtm	Goodwill And Indefinite Lived Intangible Assets Written Off Related To Sale Of Business Unit GoodwillAndIndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit	0	usd
	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	6700000	usd
	us-gaap	Indefinite Lived Intangible Assets Written Off Related To Sale Of Business Unit IndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit	6900000	usd
	wtm	Goodwill And Indefinite Lived Intangible Assets Written Off Related To Sale Of Business Unit GoodwillAndIndefiniteLivedIntangibleAssetsWrittenOffRelatedToSaleOfBusinessUnit	13600000	usd
	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	0	usd
	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	0	usd
	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-1000000.0	usd
	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-1000000.0	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11300000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	11300000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4200000	usd
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4200000	usd
CY2024Q2	us-gaap	Goodwill Goodwill	439200000	usd
CY2024Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	291800000	usd
CY2024Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	731000000.0	usd
CY2023Q2	us-gaap	Goodwill Goodwill	168800000	usd
CY2023Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	204800000	usd
CY2023Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	373600000	usd
	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="text-indent:18pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The following table summarizes the loss and loss adjustment expense (“LAE”) reserve activity of the Ark/WM Outrigger segment</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%"> </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">for the three and six months ended June 30, 2024 and 2023: </span></div><div style="text-indent:36pt"><span><br/></span></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"></td><td style="width:47.588%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.528%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.999%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.528%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.999%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.528%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:10.999%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.528%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.003%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="9" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">Three Months Ended June 30,</span></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="9" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">Six Months Ended June 30,</span></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:8pt;font-weight:700;line-height:100%">Millions</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2024</span></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2023</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2024</span></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"></td><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:700;line-height:100%">2023</span></td></tr><tr><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Gross beginning balance</span></td><td colspan="3" style="padding:0 1pt"></td><td style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">$</span></td><td style="border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,744.5</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,345.6 </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">$</span></td><td style="border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,605.1</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="padding:0 1pt"></td><td style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,296.5 </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Less: beginning reinsurance recoverable on unpaid losses </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.2pt;font-weight:400;line-height:100%;position:relative;top:-2.8pt;vertical-align:baseline">(1)</span></div></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:10pt;font-weight:700;line-height:100%">(404.5)</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:10pt;font-weight:400;line-height:100%">(348.9)</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:10pt;font-weight:700;line-height:100%">(340.8)</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:10pt;font-weight:400;line-height:100%">(505.0)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 13pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Net loss and loss adjustment expense reserves</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,340.0</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">996.7 </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,264.3</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">791.5 </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr style="height:3pt"><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="padding:0 1pt"></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="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></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:10pt;font-weight:400;line-height:100%">Loss and loss adjustment expenses incurred relating to:</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="padding:0 1pt"></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="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 13pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Current year losses</span></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:10pt;font-weight:700;line-height:100%">182.6</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </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:10pt;font-weight:400;line-height:100%">156.5 </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:10pt;font-weight:700;line-height:100%">362.9</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </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:10pt;font-weight:400;line-height:100%">295.7 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 13pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Prior year losses</span></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:10pt;font-weight:700;line-height:100%">(6.9)</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:10pt;font-weight:400;line-height:100%">11.0 </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:10pt;font-weight:700;line-height:100%">(7.2)</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:10pt;font-weight:400;line-height:100%">19.6 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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:10pt;font-weight:400;line-height:100%">Net incurred loss and loss adjustment expenses</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">175.7</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">167.5 </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">355.7</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">315.3 </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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><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><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td><td colspan="3" style="display:none"></td></tr><tr style="height:3pt"><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="padding:0 1pt"></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="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></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:10pt;font-weight:400;line-height:100%">Loss and loss adjustment expenses paid relating to:</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="padding:0 1pt"></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="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 13pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Current year losses</span></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:10pt;font-weight:700;line-height:100%">(4.3)</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:10pt;font-weight:400;line-height:100%">(5.6)</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:10pt;font-weight:700;line-height:100%">(8.3)</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:10pt;font-weight:400;line-height:100%">(9.6)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 13pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Prior year losses</span></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:10pt;font-weight:700;line-height:100%">(78.8)</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:10pt;font-weight:400;line-height:100%">(103.0)</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:10pt;font-weight:700;line-height:100%">(175.5)</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:10pt;font-weight:400;line-height:100%">(190.7)</span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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:10pt;font-weight:400;line-height:100%">Net paid loss and loss adjustment expenses</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">(83.1)</span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(108.6)</span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">(183.8)</span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(200.3)</span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr style="height:3pt"><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="padding:0 1pt"></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="padding:0 1pt"></td><td colspan="3" style="padding:0 1pt"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Change in TPC Providers’ participation </span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.2pt;font-weight:400;line-height:100%;position:relative;top:-2.8pt;vertical-align:baseline">(2)</span></div></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:10pt;font-weight:700;line-height:100%">—</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </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:10pt;font-weight:400;line-height:100%">— </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:10pt;font-weight:700;line-height:100%">—</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </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:10pt;font-weight:400;line-height:100%">145.4 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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:10pt;font-weight:400;line-height:100%">Foreign currency translation and other adjustments to loss<br/> and loss adjustment expense reserves</span></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:10pt;font-weight:700;line-height:100%">(1.0)</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:10pt;font-weight:400;line-height:100%">2.7 </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:10pt;font-weight:700;line-height:100%">(4.6)</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:10pt;font-weight:400;line-height:100%">6.4 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></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:10pt;font-weight:400;line-height:100%">Net ending balance</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="2" style="border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,431.6</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,058.3 </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,431.6</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-top:1pt solid #000;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 #000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,058.3 </span></td><td style="border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="padding:2px 1pt 2px 7pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Plus: ending reinsurance recoverable on unpaid losses</span></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:10pt;font-weight:700;line-height:100%">458.5</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </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:10pt;font-weight:400;line-height:100%">362.7 </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:10pt;font-weight:700;line-height:100%">458.5</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </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:10pt;font-weight:400;line-height:100%">362.7 </span></td><td style="padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="border-bottom:3pt double #000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Gross ending balance</span></td><td colspan="3" style="border-bottom:3pt double #000;padding:0 1pt"></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">$</span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,890.1</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="border-bottom:3pt double #000;padding:0 1pt"></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,421.0 </span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="border-bottom:3pt double #000;padding:0 1pt"></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">$</span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:100%">1,890.1</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%"> </span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="border-bottom:3pt double #000;padding:0 1pt"></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,421.0 </span></td><td style="border-bottom:3pt double #000;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div><div style="margin-top:3pt;padding-left:9pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.2pt;font-weight:400;line-height:120%;position:relative;top:-2.8pt;vertical-align:baseline">(1)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%"> The beginning reinsurance recoverable on unpaid losses includes amounts attributable to TPC Providers of $145.4 as of December 31, 2022.</span></div><div style="padding-left:9pt;text-indent:-9pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:5.2pt;font-weight:400;line-height:120%;position:relative;top:-2.8pt;vertical-align:baseline">(2)</span><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:8pt;font-weight:400;line-height:120%"> Amount represents the impact to net loss and loss adjustment expense reserves due to a change in the TPC Providers’ participation related to the annual RITC process.</span></div>
CY2024Q2	us-gaap	Long Term Debt LongTermDebt	530200000	usd
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	564600000	usd
CY2023	us-gaap	Deferred Other Tax Expense Benefit DeferredOtherTaxExpenseBenefit	-68000000	usd
CY2024Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.187
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.087
CY2023Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.011
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.056
CY2024Q2	us-gaap	Funds Held Under Reinsurance Agreements Asset FundsHeldUnderReinsuranceAgreementsAsset	944600000	usd
CY2023Q4	us-gaap	Funds Held Under Reinsurance Agreements Asset FundsHeldUnderReinsuranceAgreementsAsset	948500000	usd
CY2024Q2	wtm	Funds Held Under Reinsurance Agreements Assets Cash And Investments FundsHeldUnderReinsuranceAgreementsAssetsCashAndInvestments	609300000	usd
CY2023Q4	wtm	Funds Held Under Reinsurance Agreements Assets Cash And Investments FundsHeldUnderReinsuranceAgreementsAssetsCashAndInvestments	588600000	usd
CY2024Q2	wtm	Funds Held Under Reinsurance Agreements Assets Surplus Notes FundsHeldUnderReinsuranceAgreementsAssetsSurplusNotes	317100000	usd
CY2023Q4	wtm	Funds Held Under Reinsurance Agreements Assets Surplus Notes FundsHeldUnderReinsuranceAgreementsAssetsSurplusNotes	322200000	usd
CY2024Q2	wtm	Funds Held Under Reinsurance Agreements Assets Interest Receivable FundsHeldUnderReinsuranceAgreementsAssetsInterestReceivable	18200000	usd
CY2023Q4	wtm	Funds Held Under Reinsurance Agreements Assets Interest Receivable FundsHeldUnderReinsuranceAgreementsAssetsInterestReceivable	37700000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	-54600000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	19600000	usd
	us-gaap	Net Income Loss NetIncomeLoss	181800000	usd
	us-gaap	Net Income Loss NetIncomeLoss	199100000	usd
CY2024Q2	us-gaap	Undistributed Continuing Operation Earnings Loss Allocation To Participating Securities Basic UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic	-700000	usd
CY2023Q2	us-gaap	Undistributed Continuing Operation Earnings Loss Allocation To Participating Securities Basic UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic	300000	usd
	us-gaap	Undistributed Continuing Operation Earnings Loss Allocation To Participating Securities Basic UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic	2200000	usd
	us-gaap	Undistributed Continuing Operation Earnings Loss Allocation To Participating Securities Basic UndistributedContinuingOperationEarningsLossAllocationToParticipatingSecuritiesBasic	2700000	usd
CY2024Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-53900000	usd
CY2024Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-53900000	usd
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	19300000	usd
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	19300000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	179600000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	179600000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	196400000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	196400000	usd
CY2024Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2566600	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2562400	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2563200	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2566100	shares
CY2024Q2	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	34800	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	37600	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	31700	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	34400	shares
CY2024Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2531800	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2524800	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2531500	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	2531700	shares
CY2024Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2566600	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2562400	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2563200	shares
	us-gaap	Weighted Average Number Of Shares Issued Basic WeightedAverageNumberOfSharesIssuedBasic	2566100	shares
CY2024Q2	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	34800	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	37600	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	31700	shares
	us-gaap	Weighted Average Number Of Shares Restricted Stock WeightedAverageNumberOfSharesRestrictedStock	34400	shares
CY2024Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2531800	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2524800	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2531500	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	2531700	shares
CY2024Q2	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	0
CY2024Q2	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	0
CY2023Q2	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	0
CY2023Q2	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	0
	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	1.00
	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	1.00
	us-gaap	Earnings Per Share Diluted Distributed EarningsPerShareDilutedDistributed	1.00
	us-gaap	Earnings Per Share Basic Distributed EarningsPerShareBasicDistributed	1.00
CY2024Q2	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	-21.24
CY2024Q2	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	-21.24
CY2023Q2	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	7.65
CY2023Q2	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	7.65
	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	69.93
	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	69.93
	us-gaap	Earnings Per Share Diluted Undistributed EarningsPerShareDilutedUndistributed	76.57
	us-gaap	Earnings Per Share Basic Undistributed EarningsPerShareBasicUndistributed	76.57
CY2024Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-21.24
CY2024Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-21.24
CY2023Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	7.65
CY2023Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	7.65
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	70.93
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	70.93
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	77.57
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	77.57
CY2024Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-53900000	usd
CY2023Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	19300000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	179600000	usd
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	196400000	usd
CY2024Q2	wtm	Dividends Common Stock Cash Net Of Restricted Stock DividendsCommonStockCashNetOfRestrictedStock	0	usd
CY2023Q2	wtm	Dividends Common Stock Cash Net Of Restricted Stock DividendsCommonStockCashNetOfRestrictedStock	0	usd
	wtm	Dividends Common Stock Cash Net Of Restricted Stock DividendsCommonStockCashNetOfRestrictedStock	2500000	usd
	wtm	Dividends Common Stock Cash Net Of Restricted Stock DividendsCommonStockCashNetOfRestrictedStock	2500000	usd
CY2024Q2	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	-53900000	usd
CY2023Q2	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	19300000	usd
	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	177100000	usd
	us-gaap	Undistributed Continuing Operation Earnings Loss Basic UndistributedContinuingOperationEarningsLossBasic	193900000	usd
CY2024Q1	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	34007	shares
CY2024Q1	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	44200000	usd
CY2023Q1	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	37031	shares
CY2023Q1	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	36400000	usd
CY2023Q4	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	37031	shares
CY2023Q4	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	69400000	usd
CY2022Q4	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	39449	shares
CY2022Q4	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	67500000	usd
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesSharesPaidInPeriod	0	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilitySharesPaidInPeriod	0	usd
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesSharesPaidInPeriod	0	shares
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilitySharesPaidInPeriod	0	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesSharesPaidInPeriod	13475	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilitySharesPaidInPeriod	44900000	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesSharesPaidInPeriod	13350	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Shares Paid In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilitySharesPaidInPeriod	40800000	usd
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	1000	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityGrantsInPeriod	0	usd
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	0	shares
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityGrantsInPeriod	0	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	11405	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityGrantsInPeriod	0	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	10895	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityGrantsInPeriod	0	usd
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesForfeitedAndCancelledInPeriod	15	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityForfeitedAndCancelledInPeriod	0	usd
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesForfeitedAndCancelledInPeriod	0	shares
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityForfeitedAndCancelledInPeriod	200000	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesForfeitedAndCancelledInPeriod	-31	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityForfeitedAndCancelledInPeriod	-300000	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesForfeitedAndCancelledInPeriod	-37	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Forfeited And Cancelled In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityForfeitedAndCancelledInPeriod	-200000	usd
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Expense In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityExpenseInPeriod	7800000	usd
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Expense In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityExpenseInPeriod	8400000	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Expense In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityExpenseInPeriod	27200000	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Expense In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityExpenseInPeriod	17700000	usd
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	34992	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	52000000.0	usd
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	37031	shares
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CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	34992	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	52000000.0	usd
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceShares	37031	shares
CY2023Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiability	44600000	usd
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	1000	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	11405	shares
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesGrantsInPeriod	10895	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Nonvested Number Before Assumed Forfeitures ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesNonvestedNumberBeforeAssumedForfeitures	35525	shares
CY2024Q2	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Accrued Liability Before Assumed Forfeitures ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesAccruedLiabilityBeforeAssumedForfeitures	52800000	usd
	wtm	Share Based Compensation Arrangement By Share Based Payment Award Performance Shares Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceSharesForfeitedInPeriod	533	shares
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CY2024Q2	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	13300000	usd
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CY2023Q2	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	62900000	usd
CY2023Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	11600000	usd
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CY2023Q2	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	2200000	usd
CY2023Q2	us-gaap	Interest Expense InterestExpense	14200000	usd
CY2023Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	361000000.0	usd
CY2023Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	17400000	usd
	us-gaap	Premiums Earned Net PremiumsEarnedNet	662900000	usd
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	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	14600000	usd
	wtm	Broker Commission Expense BrokerCommissionExpense	22000000.0	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	247700000	usd
	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	13300000	usd
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	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	693800000	usd
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CY2024Q2	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	22200000	usd
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	38100000	usd
CY2023Q2	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	22100000	usd
	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	28500000	usd

Files In Submission

Name	View Source	Status
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$WTM
WHITE MOUNTAINS INSURANCE GROUP LTD Stock $wtm

2024 Q3 Form 10-Q Financial Statement

#000077686724000015 Filed on August 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WTM WHITE MOUNTAINS INSURANCE GROUP LTD Stock $wtm

2024 Q3 Form 10-Q Financial Statement

#000077686724000015 Filed on August 07, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WTM
WHITE MOUNTAINS INSURANCE GROUP LTD Stock $wtm