$ORI
OLD REPUBLIC INTERNATIONAL CORP Stock $ori

$ori Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000007426024000021 Filed on February 28, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$2.029B	$1.887B	$7.382B
YoY Change	15.37%	-4.07%	-11.56%
Cost Of Revenue	$694.6M		$2.580B
YoY Change	15.73%		6.27%
Gross Profit	$1.335B		$4.802B
YoY Change	15.19%		-18.87%
Gross Profit Margin	65.77%		65.05%
Selling, General & Admin	$903.3M	$975.7M	$3.844B
YoY Change	1.65%	-12.47%	-18.55%
% of Gross Profit	67.69%		80.04%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization			$33.00M
YoY Change			16.61%
% of Gross Profit			0.69%
Operating Expenses	$1.601B	$1.687B	$6.440B
YoY Change	7.25%	0.45%	-10.05%
Operating Profit	-$266.2M		-$1.638B
YoY Change	-20.3%		32.08%
Interest Expense	-$29.70M	$37.70M	-$194.4M
YoY Change	57.14%	-89.57%	-41.11%
% of Operating Profit
Other Income/Expense, Net		-$100.0K	-$100.0K
YoY Change		-200.0%
Pretax Income	$398.7M	$237.4M	$747.4M
YoY Change	59.99%	-63.42%	-12.83%
Income Tax	$81.90M	$46.70M	$148.7M
% Of Pretax Income	20.54%	19.67%	19.9%
Net Earnings	$316.7M	$190.6M	$598.6M
YoY Change	58.51%	-62.78%	-12.79%
Net Earnings / Revenue	15.61%	10.1%	8.11%
Basic Earnings Per Share	$1.17	$0.70	$2.12
Diluted Earnings Per Share	$1.15	$0.69	$2.10
COMMON SHARES
Basic Shares Outstanding	278.2M shares	274.0M shares	282.7M shares
Diluted Shares Outstanding	275.4M shares	277.2M shares	285.5M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$136.9M	$202.8M
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		$178.3M
YoY Change		0.11%
Intangibles
YoY Change
Long-Term Investments	$16.32B	$16.19B	$16.19B
YoY Change	2.01%	381.92%	381.92%
Other Assets	$191.8M	$194.8M	$194.8M
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$27.06B	$26.50B	$26.50B
YoY Change	6.56%	5.33%	5.33%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
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	$541.0M	$533.8M	$533.8M
YoY Change	1.03%	3.69%	3.69%
LONG-TERM LIABILITIES
Long-Term Debt	$1.988B	$1.591B	$1.591B
YoY Change	24.99%	-0.36%	-0.36%
Other Long-Term Liabilities	$691.2M	$1.387B	$1.387B
YoY Change	24.97%	28.98%	28.98%
Total Long-Term Liabilities	$2.679B	$2.979B	$2.979B
YoY Change	24.98%	11.45%	11.45%
TOTAL LIABILITIES
Total Short-Term Liabilities	$541.0M	$533.8M	$533.8M
Total Long-Term Liabilities	$2.679B	$2.979B	$2.979B
Total Liabilities	$20.66B	$20.09B	$20.09B
YoY Change	8.38%	5.78%	5.78%
SHAREHOLDERS EQUITY
Retained Earnings	$5.889B	$5.644B
YoY Change	8.05%	6.1%
Common Stock	$772.5M	$957.0M
YoY Change	-41.75%	-33.48%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.401B	$6.411B	$6.411B
YoY Change
Total Liabilities & Shareholders Equity	$27.06B	$26.50B	$26.50B
YoY Change	6.56%	5.33%	5.33%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$316.7M	$190.6M	$598.6M
YoY Change	58.51%	-62.78%	-12.79%
Depreciation, Depletion And Amortization			$33.00M
YoY Change			16.61%
Cash From Operating Activities	$160.4M	$282.6M	$880.4M
YoY Change	2.43%	5.72%	-24.79%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	$1.200M	-$114.1M	-$300.0K
YoY Change	-500.0%	89.22%	-102.44%
Cash From Investing Activities	-$355.2M	-$114.1M	$25.30M
YoY Change	-820.49%	89.22%	-106.1%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$128.4M	-117.9M	-$783.2M
YoY Change	-166.43%	-48.38%	-5.94%
NET CHANGE
Cash From Operating Activities	$160.4M	282.6M	$880.4M
Cash From Investing Activities	-$355.2M	-114.1M	$25.30M
Cash From Financing Activities	$128.4M	-117.9M	-$783.2M
Net Change In Cash	-$66.20M	50.60M	$122.5M
YoY Change	-625.4%	-336.45%	-258.88%
FREE CASH FLOW
Cash From Operating Activities	$160.4M	$282.6M	$880.4M
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	ori	Total Operating Revenues TotalOperatingRevenues	7449300000	usd
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-67000000.0	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-123900000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-190900000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Revenues Revenues	8083700000	usd
CY2021	us-gaap	Revenues Revenues	9341600000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2398200000	usd
CY2023	us-gaap	Other Income OtherIncome	163100000	usd
CY2022	ori	Total Operating Revenues TotalOperatingRevenues	8284900000	usd
CY2021	ori	Total Operating Revenues TotalOperatingRevenues	8583500000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-263400000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	751100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	598600000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000074260
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	0	usd
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	0	usd
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	278392263	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	296932316	shares
CY2023	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.92
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	2.38
CY2023	ori	Special Dividends Paid In2021 SpecialDividendsPaidIn2021	764500000	usd
CY2023	ori	Special Dividends Paid In2022 SpecialDividendsPaidIn2022	308400000	usd
CY2023Q4	ori	Liabilties Related To Escrow LiabiltiesRelatedToEscrow	1817100000	usd
CY2022Q4	ori	Liabilties Related To Escrow LiabiltiesRelatedToEscrow	2022700000	usd
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal Statement Of Income Extensible List DisposalGroupNotDiscontinuedOperationGainLossOnDisposalStatementOfIncomeExtensibleList	http://fasb.org/us-gaap/2023#Revenues
CY2023	ori	Reinsurance Unrecoverable Amount ReinsuranceUnrecoverableAmount	0	usd
CY2022	ori	Reinsurance Unrecoverable Amount ReinsuranceUnrecoverableAmount	0	usd
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y
CY2023Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	0	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023	us-gaap	Common Stock Voting Rights CommonStockVotingRights	1
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2023#OtherLiabilities
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal Statement Of Income Extensible List DisposalGroupNotDiscontinuedOperationGainLossOnDisposalStatementOfIncomeExtensibleList	http://fasb.org/us-gaap/2023#Revenues
CY2023Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	5776000000	usd
CY2022Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	5468500000	usd
CY2021Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	4825100000	usd
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	6555078398	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	278183589	shares
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12139900000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11746700000	usd
CY2023Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	1032600000	usd
CY2022Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	860800000	usd
CY2023Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	2660800000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	3220900000	usd
CY2023Q4	us-gaap	Other Investments OtherInvestments	34300000	usd
CY2022Q4	us-gaap	Other Investments OtherInvestments	31200000	usd
CY2023Q4	us-gaap	Investments Investments	15867700000	usd
CY2022Q4	us-gaap	Investments Investments	15859900000	usd
CY2023Q4	us-gaap	Cash Cash	202800000	usd
CY2022Q4	us-gaap	Cash Cash	81000000.0	usd
CY2023Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	117000000.0	usd
CY2022Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	106700000	usd
CY2023Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	2201400000	usd
CY2022Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1927500000	usd
CY2023Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	21800000	usd
CY2022Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	15700000	usd
CY2023Q4	us-gaap	Funds Held Under Reinsurance Agreements Asset FundsHeldUnderReinsuranceAgreementsAsset	544700000	usd
CY2022Q4	us-gaap	Funds Held Under Reinsurance Agreements Asset FundsHeldUnderReinsuranceAgreementsAsset	323000000.0	usd
CY2023Q4	us-gaap	Reinsurance Recoverables On Paid Losses ReinsuranceRecoverablesOnPaidLosses	175400000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid Losses ReinsuranceRecoverablesOnPaidLosses	119400000	usd
CY2023Q4	ori	Reinsurance Recoverable For Loss And Loss Adjustment Expense Reserves ReinsuranceRecoverableForLossAndLossAdjustmentExpenseReserves	4977700000	usd
CY2022Q4	ori	Reinsurance Recoverable For Loss And Loss Adjustment Expense Reserves ReinsuranceRecoverableForLossAndLossAdjustmentExpenseReserves	4699500000	usd
CY2023Q4	ori	Unearned Premium And Policy Reserves UnearnedPremiumAndPolicyReserves	798200000	usd
CY2022Q4	ori	Unearned Premium And Policy Reserves UnearnedPremiumAndPolicyReserves	768900000	usd
CY2023Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	417800000	usd
CY2022Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	382500000	usd
CY2023Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	194800000	usd
CY2022Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	0	usd
CY2023Q4	us-gaap	Other Assets OtherAssets	981500000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	874800000	usd
CY2023Q4	us-gaap	Assets Assets	26501400000	usd
CY2022Q4	us-gaap	Assets Assets	25159400000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12538200000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12221500000	usd
CY2023Q4	us-gaap	Unearned Premiums UnearnedPremiums	3042700000	usd
CY2022Q4	us-gaap	Unearned Premiums UnearnedPremiums	2787800000	usd
CY2023Q4	ori	Other Policholders Benefits And Funds OtherPolicholdersBenefitsAndFunds	150300000	usd
CY2022Q4	ori	Other Policholders Benefits And Funds OtherPolicholdersBenefitsAndFunds	182200000	usd
CY2023Q4	ori	Total Policy Liabilities And Accruals TotalPolicyLiabilitiesAndAccruals	15731400000	usd
CY2022Q4	ori	Total Policy Liabilities And Accruals TotalPolicyLiabilitiesAndAccruals	15191600000	usd
CY2023Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	533800000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	514800000	usd
CY2023Q4	ori	Reinsurance Balances And Funds Held ReinsuranceBalancesAndFundsHeld	1380900000	usd
CY2022Q4	ori	Reinsurance Balances And Funds Held ReinsuranceBalancesAndFundsHeld	1079400000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	105600000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	42700000	usd
CY2023Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1591200000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1597000000	usd
CY2023Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	56800000	usd
CY2022Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	0	usd
CY2023Q4	us-gaap	Other Liabilities OtherLiabilities	690600000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	560500000	usd
CY2023Q4	us-gaap	Liabilities Liabilities	20090700000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	18986200000	usd
CY2023Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	usd
CY2022Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	278300000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	296900000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	678700000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1141800000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5644300000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5321800000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-132400000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-517800000	usd
CY2023Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	58200000	usd
CY2022Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	69500000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	6410700000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6173200000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	26501400000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	25159400000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	6445900000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	7342100000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	7559800000	usd
CY2023	ori	Title Escrow And Other Fees TitleEscrowAndOtherFees	261800000	usd
CY2022	ori	Title Escrow And Other Fees TitleEscrowAndOtherFees	333200000	usd
CY2021	ori	Title Escrow And Other Fees TitleEscrowAndOtherFees	443800000	usd
CY2023	ori	Total Premiums And Fees TotalPremiumsAndFees	6707700000	usd
CY2022	ori	Total Premiums And Fees TotalPremiumsAndFees	7675300000	usd
CY2021	ori	Total Premiums And Fees TotalPremiumsAndFees	8003600000	usd
CY2023	us-gaap	Net Investment Income NetInvestmentIncome	578300000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	459500000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	434300000	usd
CY2022	us-gaap	Other Income OtherIncome	149900000	usd
CY2021	us-gaap	Other Income OtherIncome	145600000	usd
CY2023	us-gaap	Revenues Revenues	7258300000	usd
CY2023	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2580000000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2427700000	usd
CY2023	us-gaap	Policyholder Dividends PolicyholderDividends	16500000	usd
CY2022	us-gaap	Policyholder Dividends PolicyholderDividends	12500000	usd
CY2021	us-gaap	Policyholder Dividends PolicyholderDividends	22700000	usd
CY2023	ori	Underwriting Acquisition And Other Expenses UnderwritingAcquisitionAndOtherExpenses	3843600000	usd
CY2022	ori	Underwriting Acquisition And Other Expenses UnderwritingAcquisitionAndOtherExpenses	4719200000	usd
CY2021	ori	Underwriting Acquisition And Other Expenses UnderwritingAcquisitionAndOtherExpenses	4942300000	usd
CY2022	ori	Interest And Other Charges InterestAndOtherCharges	66700000	usd
CY2021	ori	Interest And Other Charges InterestAndOtherCharges	56200000	usd
CY2021	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7419500000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	747400000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	857400000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1922100000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-37400000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	148700000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	170900000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	598600000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.12
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.08
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.10
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.05
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	282732526	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	301676941	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	301945319	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	285471064	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303296612	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303667669	shares
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	285300000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-1145700000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-362000000.0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-184500000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-312300000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	1700000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	469800000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-833300000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-363800000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	98900000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-175900000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-76800000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	370800000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-657300000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-287000000.0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-10700000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-83600000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	-94500000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	100000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	3000000.0	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-10800000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	7400000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-86600000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-101900000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2200000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-18200000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-21400000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-8500000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-68400000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-80500000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	984100000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	598600000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2023	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	35200000	usd
CY2022	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	32000000.0	usd
CY2021	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	22300000	usd
CY2023	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	274400000	usd
CY2022	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	158600000	usd
CY2021	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	174800000	usd
CY2023	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	93400000	usd
CY2022	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	221500000	usd
CY2021	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	279800000	usd
CY2023	us-gaap	Increase Decrease In Other Policyholder Funds IncreaseDecreaseInOtherPolicyholderFunds	194000000.0	usd
CY2022	us-gaap	Increase Decrease In Other Policyholder Funds IncreaseDecreaseInOtherPolicyholderFunds	157600000	usd
CY2021	us-gaap	Increase Decrease In Other Policyholder Funds IncreaseDecreaseInOtherPolicyholderFunds	103400000	usd
CY2023	ori	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	47100000	usd
CY2022	ori	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	54700000	usd
CY2021	ori	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	-151400000	usd
CY2023	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	-23800000	usd
CY2022	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	-147200000	usd
CY2021	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	-36900000	usd
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-67000000.0	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2023	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-123900000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	160900000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1170600000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1311700000	usd
CY2023	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1353200000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1356100000	usd
CY2023	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1446500000	usd
CY2021	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	540700000	usd
CY2022	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	11400000	usd
CY2021	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	8300000	usd
CY2023	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2919700000	usd
CY2022	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	5009500000	usd
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2330700000	usd
CY2023	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	91900000	usd
CY2022	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	58000000.0	usd
CY2021	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	1032200000	usd
CY2023	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	106400000	usd
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	59700000	usd
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	55500000	usd
CY2023	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	362600000	usd
CY2022	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	295700000	usd
CY2021	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-183900000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-300000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	12300000	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	25300000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-415000000.0	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-936500000	usd
CY2023	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2022	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	usd
CY2021	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	642500000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	31100000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	26600000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	60000000.0	usd
CY2023	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	5300000	usd
CY2022	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	usd
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	21700000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	275500000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	579700000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1019200000	usd
CY2023	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	535300000	usd
CY2022	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	281200000	usd
CY2021	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1800000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1500000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	2500000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-783200000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-832700000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-335700000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	122500000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-77100000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	39400000	usd
CY2023	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	-800000	usd
CY2022	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	usd
CY2021	us-gaap	Net Cash Provided By Used In Discontinued Operations NetCashProvidedByUsedInDiscontinuedOperations	0	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81000000.0	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	158100000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	118700000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	202800000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	81000000.0	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	158100000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	66000000.0	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	65800000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	53400000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	198300000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	226500000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	236500000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	6410700000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6173200000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	598600000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1604000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1587700000	usd
CY2023Q4	ori	Title Premium And Fee Revenues Stemming From Direct Operations TitlePremiumAndFeeRevenuesStemmingFromDirectOperations	0.210
CY2022Q4	ori	Title Premium And Fee Revenues Stemming From Direct Operations TitlePremiumAndFeeRevenuesStemmingFromDirectOperations	0.195
CY2021Q4	ori	Title Premium And Fee Revenues Stemming From Direct Operations TitlePremiumAndFeeRevenuesStemmingFromDirectOperations	0.220
CY2023	ori	Noninsurance Contract Revenue NoninsuranceContractRevenue	215900000	usd
CY2022	ori	Noninsurance Contract Revenue NoninsuranceContractRevenue	210100000	usd
CY2021	ori	Noninsurance Contract Revenue NoninsuranceContractRevenue	210200000	usd
CY2023	us-gaap	Depreciation Depreciation	33000000.0	usd
CY2022	us-gaap	Depreciation Depreciation	28300000	usd
CY2021	us-gaap	Depreciation Depreciation	27200000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	6119300000	usd
CY2023Q4	us-gaap	Goodwill Goodwill	178300000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	178100000	usd
CY2023Q4	us-gaap	Disposal Group Including Discontinued Operation Consideration DisposalGroupIncludingDiscontinuedOperationConsideration	140000000.0	usd
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	45600000	usd
CY2023	us-gaap	Disposal Group Not Discontinued Operation Loss Gain On Write Down DisposalGroupNotDiscontinuedOperationLossGainOnWriteDown	34500000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	5999400000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	4455600000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	4467700000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	83900000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	84900000	usd
CY2023Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12263000000	usd
CY2023Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	12139900000	usd
CY2023Q4	ori	Bonds On Deposit With Governmental Authorities BondsOnDepositWithGovernmentalAuthorities	946000000.0	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1487600000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	11800000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	6005100000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	250200000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	7492700000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	9412000000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	439100000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	1457400000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	170900000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	10869500000	usd
CY2023	ori	Other Than Temporary Impairment Losses Credit Losses Other Investments Debt Secutiries Recognized In Earnings OtherThanTemporaryImpairmentLossesCreditLossesOtherInvestmentsDebtSecutiriesRecognizedInEarnings	-6200000	usd
CY2022	ori	Other Than Temporary Impairment Losses Credit Losses Other Investments Debt Secutiries Recognized In Earnings OtherThanTemporaryImpairmentLossesCreditLossesOtherInvestmentsDebtSecutiriesRecognizedInEarnings	-123500000	usd
CY2023Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	1600000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-123900000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-263400000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	751100000	usd
CY2023	ori	Net Unrealized Gains Losses Recognizedfrom Changesin Fair Valueof Equity Securities Held NetUnrealizedGainsLossesRecognizedfromChangesinFairValueofEquitySecuritiesHeld	28200000	usd
CY2022	ori	Net Unrealized Gains Losses Recognizedfrom Changesin Fair Valueof Equity Securities Held NetUnrealizedGainsLossesRecognizedfromChangesinFairValueofEquitySecuritiesHeld	42300000	usd
CY2021	ori	Net Unrealized Gains Losses Recognizedfrom Changesin Fair Valueof Equity Securities Held NetUnrealizedGainsLossesRecognizedfromChangesinFairValueofEquitySecuritiesHeld	711000000.0	usd
CY2023Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	1032600000	usd
CY2022Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	860800000	usd
CY2023	ori	Gross Investment Income GrossInvestmentIncome	598900000	usd
CY2022	ori	Gross Investment Income GrossInvestmentIncome	469300000	usd
CY2021	ori	Gross Investment Income GrossInvestmentIncome	440400000	usd
CY2023	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	20600000	usd
CY2022	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	9700000	usd
CY2021	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	6100000	usd
CY2023	us-gaap	Net Investment Income NetInvestmentIncome	578300000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	459500000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	434300000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	1200000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	2600000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	3400000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	181900000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	190200000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	1900000	usd
CY2023	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-180700000	usd
CY2022	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-187600000	usd
CY2021	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	1500000	usd
CY2023	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	-15200000	usd
CY2022	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	185700000	usd
CY2021	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	6900000	usd
CY2023	ori	Other Than Temporary Impairment Losses Credit Losses Other Investments Debt Securities Sale Of Subsidiary Recognized In Earnings OtherThanTemporaryImpairmentLossesCreditLossesOtherInvestmentsDebtSecuritiesSaleOfSubsidiaryRecognizedInEarnings	-51800000	usd
CY2022	ori	Other Than Temporary Impairment Losses Credit Losses Other Investments Debt Securities Sale Of Subsidiary Recognized In Earnings OtherThanTemporaryImpairmentLossesCreditLossesOtherInvestmentsDebtSecuritiesSaleOfSubsidiaryRecognizedInEarnings	-123500000	usd
CY2021	ori	Other Than Temporary Impairment Losses Credit Losses Other Investments Debt Securities Sale Of Subsidiary Recognized In Earnings OtherThanTemporaryImpairmentLossesCreditLossesOtherInvestmentsDebtSecuritiesSaleOfSubsidiaryRecognizedInEarnings	0	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-123900000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-263400000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	751100000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-190900000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2023	ori	Income Taxes Credits On Realized Investment Gains Losses IncomeTaxesCreditsOnRealizedInvestmentGainsLosses	-40000000.0	usd
CY2022	ori	Income Taxes Credits On Realized Investment Gains Losses IncomeTaxesCreditsOnRealizedInvestmentGainsLosses	-42500000	usd
CY2021	ori	Income Taxes Credits On Realized Investment Gains Losses IncomeTaxesCreditsOnRealizedInvestmentGainsLosses	159600000	usd
CY2023	ori	Net Realized Gains Losses NetRealizedGainsLosses	-150800000	usd
CY2022	ori	Net Realized Gains Losses NetRealizedGainsLosses	-158600000	usd
CY2021	ori	Net Realized Gains Losses NetRealizedGainsLosses	598400000	usd
CY2023	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	370800000	usd
CY2022	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-657300000	usd
CY2021	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-287000000.0	usd
CY2023	us-gaap	Deferred Policy Acquisition Costs Text Block1 DeferredPolicyAcquisitionCostsTextBlock1	Deferred Policy Acquisition Costs<div style="text-align:justify;text-indent:18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">The following table shows the components of deferred policy acquisition costs:</span></div><div style="margin-top:5pt;text-align:center;text-indent:18pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:99.712%"><tr><td style="width:1.0%"></td><td style="width:59.995%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.520%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.147%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.520%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.147%"></td><td style="width:0.1%"></td><td style="width:0.1%"></td><td style="width:0.520%"></td><td style="width:0.1%"></td><td style="width:1.0%"></td><td style="width:11.151%"></td><td style="width:0.1%"></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Years Ended December 31:</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">2023</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">2022</span></td><td colspan="3" style="padding:0 1pt"></td><td colspan="3" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">2021</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt;text-align:justify;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Deferred, beginning of year</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">382.5 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">350.4 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">328.0 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="text-align:justify"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Policy acquisition costs deferred:</span></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Commissions - net of reinsurance</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">495.0 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">423.3 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">340.9 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Premium taxes</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">161.0 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">147.1 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">135.2 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Salaries and other underwriting expenses</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">59.3 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">53.0 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">48.3 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div style="padding-left:24.75pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Subtotal</span></div></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">715.3 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">623.5 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">524.6 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:justify;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Amortization charged to income</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(680.1)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(591.4)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(502.2)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 12.25pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Change for the year</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">35.2 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">32.0 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"></td><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">22.4 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:justify;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Deferred, end of year</span></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">417.8 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">382.5 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td><td colspan="3" style="background-color:#cceeff;padding:0 1pt"></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">350.4 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"></td></tr></table></div>
CY2022Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	382500000	usd
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	350400000	usd
CY2020Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	328000000.0	usd
CY2023	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	715300000	usd
CY2022	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	623500000	usd
CY2021	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	524600000	usd
CY2023	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	680100000	usd
CY2022	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	591400000	usd
CY2021	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	502200000	usd
CY2023	us-gaap	Deferred Policy Acquisition Costs Period Increase Decrease DeferredPolicyAcquisitionCostsPeriodIncreaseDecrease	35200000	usd
CY2022	us-gaap	Deferred Policy Acquisition Costs Period Increase Decrease DeferredPolicyAcquisitionCostsPeriodIncreaseDecrease	32000000.0	usd
CY2021	us-gaap	Deferred Policy Acquisition Costs Period Increase Decrease DeferredPolicyAcquisitionCostsPeriodIncreaseDecrease	22400000	usd
CY2023Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	417800000	usd
CY2022Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	382500000	usd
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	350400000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12221500000	usd
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	11425500000	usd
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	10671000000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4699500000	usd
CY2021Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4125300000	usd
CY2020Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	3650500000	usd
CY2022Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	7521900000	usd
CY2021Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	7300200000	usd
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	7020400000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	2886800000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	2711100000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	2610400000	usd
CY2023	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	305800000	usd
CY2022	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	282600000	usd
CY2021	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	210600000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2581000000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2428400000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2399700000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	949800000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	852700000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	810900000	usd
CY2023	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1537700000	usd
CY2022	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1354000000	usd
CY2021	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1309000000	usd
CY2023	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	2487600000	usd
CY2022	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	2206700000	usd
CY2021	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	2120000000	usd
CY2023Q4	ori	Liability For Unpaid Claims And Claims Adjustment Expense Net Of Reinsurance Losses Recoverable LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfReinsuranceLossesRecoverable	7560400000	usd
CY2022Q4	ori	Liability For Unpaid Claims And Claims Adjustment Expense Net Of Reinsurance Losses Recoverable LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfReinsuranceLossesRecoverable	7521900000	usd
CY2021Q4	ori	Liability For Unpaid Claims And Claims Adjustment Expense Net Of Reinsurance Losses Recoverable LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfReinsuranceLossesRecoverable	7300200000	usd
CY2023Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4977700000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4699500000	usd
CY2021Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4125300000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12538200000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12221500000	usd
CY2021Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	11425500000	usd
CY2023	ori	One Year Development Of Consolidated Reserves OneYearDevelopmentOfConsolidatedReserves	0.041
CY2022	ori	One Year Development Of Consolidated Reserves OneYearDevelopmentOfConsolidatedReserves	0.039
CY2021	ori	One Year Development Of Consolidated Reserves OneYearDevelopmentOfConsolidatedReserves	0.030
CY2023	ori	Three Year Average Annual Development Of Consolidated Reserves ThreeYearAverageAnnualDevelopmentOfConsolidatedReserves	0.036
CY2023Q4	ori	Liabilityfor Claimsand Claims Adjustment Expense Gross LiabilityforClaimsandClaimsAdjustmentExpenseGross	130600000	usd
CY2022Q4	ori	Liabilityfor Claimsand Claims Adjustment Expense Gross LiabilityforClaimsandClaimsAdjustmentExpenseGross	121300000	usd
CY2023Q4	ori	Liabilityfor Claimsand Claims Adjustment Expensefrom Asbestosisand Environmental Exposure LiabilityforClaimsandClaimsAdjustmentExpensefromAsbestosisandEnvironmentalExposure	87500000	usd
CY2022Q4	ori	Liabilityfor Claimsand Claims Adjustment Expensefrom Asbestosisand Environmental Exposure LiabilityforClaimsandClaimsAdjustmentExpensefromAsbestosisandEnvironmentalExposure	84000000.0	usd
CY2023Q4	ori	General Liability Insurance Face Amount GeneralLiabilityInsuranceFaceAmount	10000000.0	usd
CY2023Q4	us-gaap	Retention Payable RetentionPayable	500000	usd
CY2023	ori	Average Five Year Survival Ratio Duration Gross AverageFiveYearSurvivalRatioDurationGross	P6Y7M6D
CY2023	ori	Average Five Year Survival Ratio Duration Net AverageFiveYearSurvivalRatioDurationNet	P7Y4M24D
CY2022	ori	Average Five Year Survival Ratio Duration Gross AverageFiveYearSurvivalRatioDurationGross	P6Y4M24D
CY2022	ori	Average Five Year Survival Ratio Duration Net AverageFiveYearSurvivalRatioDurationNet	P7Y7M6D
CY2023Q4	ori	A5 Year Average Ae Reserves To Orgig Reserves A5YearAverageAEReservesToORGIGReserves	0.006
CY2023Q4	ori	Shortduration Insurance Contracts Discounted Liabilityfor Unpaid Claimsand Allocated Claim Adjustment Expense Net ShortdurationInsuranceContractsDiscountedLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseNet	6651900000	usd
CY2022Q4	ori	Shortduration Insurance Contracts Discounted Liabilityfor Unpaid Claimsand Allocated Claim Adjustment Expense Net ShortdurationInsuranceContractsDiscountedLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseNet	6529000000	usd
CY2023Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	4973600000	usd
CY2022Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	4695300000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem	566400000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem	656600000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	346100000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	340500000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Aggregate Reconciling Items ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems	912600000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Aggregate Reconciling Items ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems	997100000	usd
CY2023Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12538200000	usd
CY2022Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	12221500000	usd
CY2023Q4	us-gaap	Shortduration Insurance Contracts Discounted Liabilities Aggregate Discount ShortdurationInsuranceContractsDiscountedLiabilitiesAggregateDiscount	179900000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Discounted Liabilities Aggregate Discount ShortdurationInsuranceContractsDiscountedLiabilitiesAggregateDiscount	184700000	usd
CY2023	ori	Interest Accretion Amount InterestAccretionAmount	25600000	usd
CY2022	ori	Interest Accretion Amount InterestAccretionAmount	9600000	usd
CY2021	ori	Interest Accretion Amount InterestAccretionAmount	42000000.0	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	42400000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	9500000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	0	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Impairment Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses	0	usd
CY2023Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	5500000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7600000	usd
CY2023	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2022	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.004
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.003
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.002
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.010
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.013
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.007
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.003
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.002
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.001
CY2023	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2022	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.003
CY2021	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0
CY2023	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.199
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.199
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.202
CY2023Q4	ori	Deferred Tax Assets Tax Losses Claims And Settlement Expenses DeferredTaxAssetsTaxLossesClaimsAndSettlementExpenses	214900000	usd
CY2022Q4	ori	Deferred Tax Assets Tax Losses Claims And Settlement Expenses DeferredTaxAssetsTaxLossesClaimsAndSettlementExpenses	218600000	usd
CY2021Q4	ori	Deferred Tax Assets Tax Losses Claims And Settlement Expenses DeferredTaxAssetsTaxLossesClaimsAndSettlementExpenses	214200000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	23800000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	22600000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	9600000	usd
CY2023Q4	ori	Alternative Minimum Tax Amt Credit Carry Forward AlternativeMinimumTaxAmtCreditCarryForward	9000000.0	usd
CY2022Q4	ori	Alternative Minimum Tax Amt Credit Carry Forward AlternativeMinimumTaxAmtCreditCarryForward	9000000.0	usd
CY2021Q4	ori	Alternative Minimum Tax Amt Credit Carry Forward AlternativeMinimumTaxAmtCreditCarryForward	9000000.0	usd
CY2023Q4	ori	Deferred Tax Asset Operating Lease Rightof Use Asset DeferredTaxAssetOperatingLeaseRightofUseAsset	46400000	usd
CY2022Q4	ori	Deferred Tax Asset Operating Lease Rightof Use Asset DeferredTaxAssetOperatingLeaseRightofUseAsset	46700000	usd
CY2021Q4	ori	Deferred Tax Asset Operating Lease Rightof Use Asset DeferredTaxAssetOperatingLeaseRightofUseAsset	49700000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	16300000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	17100000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	12300000	usd
CY2023Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	325400000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	321600000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	337500000	usd
CY2023Q4	ori	Deferred Tax Liabilties Unearned Premiums DeferredTaxLiabiltiesUnearnedPremiums	46300000	usd
CY2022Q4	ori	Deferred Tax Liabilties Unearned Premiums DeferredTaxLiabiltiesUnearnedPremiums	63300000	usd
CY2021Q4	ori	Deferred Tax Liabilties Unearned Premiums DeferredTaxLiabiltiesUnearnedPremiums	61000000.0	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	82800000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	76000000.0	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	68500000	usd
CY2023Q4	ori	Deferred Tax Liabilities Fixed Maturity Securities Adjusted To Cost DeferredTaxLiabilitiesFixedMaturitySecuritiesAdjustedToCost	14600000	usd
CY2022Q4	ori	Deferred Tax Liabilities Fixed Maturity Securities Adjusted To Cost DeferredTaxLiabilitiesFixedMaturitySecuritiesAdjustedToCost	6800000	usd
CY2021Q4	ori	Deferred Tax Liabilities Fixed Maturity Securities Adjusted To Cost DeferredTaxLiabilitiesFixedMaturitySecuritiesAdjustedToCost	5200000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	214400000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	141300000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	372600000	usd
CY2023Q4	ori	Deferred Tax Liabilities Title Plants And Records DeferredTaxLiabilitiesTitlePlantsAndRecords	2800000	usd
CY2022Q4	ori	Deferred Tax Liabilities Title Plants And Records DeferredTaxLiabilitiesTitlePlantsAndRecords	2800000	usd
CY2021Q4	ori	Deferred Tax Liabilities Title Plants And Records DeferredTaxLiabilitiesTitlePlantsAndRecords	2800000	usd
CY2023Q4	ori	Deferredtax Liabilities Tcja Discountedreservestransitionadjustment DeferredtaxLiabilitiesTCJADiscountedreservestransitionadjustment	6700000	usd
CY2022Q4	ori	Deferredtax Liabilities Tcja Discountedreservestransitionadjustment DeferredtaxLiabilitiesTCJADiscountedreservestransitionadjustment	10300000	usd
CY2021Q4	ori	Deferredtax Liabilities Tcja Discountedreservestransitionadjustment DeferredtaxLiabilitiesTCJADiscountedreservestransitionadjustment	13800000	usd
CY2023Q4	ori	Deferred Tax Liability Operating Lease Liability DeferredTaxLiabilityOperatingLeaseLiability	40900000	usd
CY2022Q4	ori	Deferred Tax Liability Operating Lease Liability DeferredTaxLiabilityOperatingLeaseLiability	41900000	usd
CY2021Q4	ori	Deferred Tax Liability Operating Lease Liability DeferredTaxLiabilityOperatingLeaseLiability	45800000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	22500000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	20100000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	17200000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	431000000.0	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	362500000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	586900000	usd
CY2023Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	105600000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	40900000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	249500000	usd
CY2023Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	26400000	usd
CY2023Q4	ori	Alternative Minimum Tax Amt Credit Carry Forward AlternativeMinimumTaxAmtCreditCarryForward	9000000.0	usd
CY2023Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	514000000.0	usd
CY2023Q4	ori	Defined Benefit Plan Securitiesat Net Asset Value DefinedBenefitPlanSecuritiesatNetAssetValue	6500000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	504000000.0	usd
CY2022Q4	ori	Defined Benefit Plan Securitiesat Net Asset Value DefinedBenefitPlanSecuritiesatNetAssetValue	3100000	usd
CY2023	ori	Number Of New Common Stock Shares Available Under The2022 Incentive Compensation Plan NumberOfNewCommonStockSharesAvailableUnderThe2022IncentiveCompensationPlan	20000000.0	shares
CY2023	ori	Maximum Numberof Common Stock Shares Available Under2016 Stock Option Plan MaximumNumberofCommonStockSharesAvailableUnder2016StockOptionPlan	4700000	shares
CY2023	ori	Maximum Number Of Common Shares Available Under The2022 Incentive Compensation Plan MaximumNumberOfCommonSharesAvailableUnderThe2022IncentiveCompensationPlan	17700000	shares
CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	19500000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9000000.0	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3200000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	4100000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	1800000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	600000	usd
CY2023Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	29700000	usd
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2023Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Within One Year Of Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateWithinOneYearOfGrantDate	0.10
CY2023Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year One And Year Two Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearOneAndYearTwoGrantDate	0.15
CY2023Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year Two And Year Three Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearTwoAndYearThreeGrantDate	0.20
CY2023Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year Three And Year Four Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearThreeAndYearFourGrantDate	0.25
CY2023Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year Four And Year Five Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearFourAndYearFiveGrantDate	0.30
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.23
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.22
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.20
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0466
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0432
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0476
CY2023	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
CY2021	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0369
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0268
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0121
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9619004	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.68
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8344470	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.57
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9494651	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.36
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	2990000	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	25.22
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	2660000	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	23.28
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	2216250	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	21.30
CY2023	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1694106	shares
CY2023	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	19.49
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1285783	shares
CY2022	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.94
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	3259273	shares
CY2021	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.28
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	44684	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	22.04
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	99683	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	19.78
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	107158	shares
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	18.32
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	10870214	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.10
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	9619004	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	20.68
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8344470	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.57
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4790571	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	20.31
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4562063	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.53
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4652951	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.22
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.76
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.31
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	1.86
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	10870214	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	22.10
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	4790571	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	20.31
CY2023	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	33000000.0	usd
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	24300000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	56300000	usd
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	17500000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	7900000	usd
CY2021	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	24200000	usd
CY2023	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	3600000	usd
CY2022	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	1600000	usd
CY2021	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	5000000.0	usd
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	659874	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	23.70
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	33539	shares
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	21.32
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	823907	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	25.15
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	644356	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	23.76
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.08
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.10
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.05
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	225289	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	23.60
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	16901	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	21.20
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	1376	shares
CY2023	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	25.05
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	1120	shares
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	22.34
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1257116	shares
CY2023Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	24.67
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	659874	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	23.70
CY2023Q4	ori	Ori401k Savings And Profit Sharing Plan Unallocated Shares ORI401kSavingsAndProfitSharingPlanUnallocatedShares	3955122	shares
CY2015	ori	Stockacquiredduringperiodvalueemployeestockownershipplan Stockacquiredduringperiodvalueemployeestockownershipplan	34000000.0	usd
CY2018	ori	Stockacquiredduringperiodvalueemployeestockownershipplan Stockacquiredduringperiodvalueemployeestockownershipplan	50000000.0	usd
CY2020	ori	Stockacquiredduringperiodvalueemployeestockownershipplan Stockacquiredduringperiodvalueemployeestockownershipplan	50000000.0	usd
CY2023Q4	ori	Employee Savings And Stock Ownership Plan Number Of Allocated Shares EmployeeSavingsAndStockOwnershipPlanNumberOfAllocatedShares	19362130	shares
CY2023Q4	ori	Ori401k Savings And Profit Sharing Plan Number Of Allocated Shares To Employees ORI401kSavingsAndProfitSharingPlanNumberOfAllocatedSharesToEmployees	15407008	shares
CY2023	ori	Defined Contribution Plan One Time Cost DefinedContributionPlanOneTimeCost	10700000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	598600000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	282732526	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	301676941	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	301945319	shares
CY2023	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2738538	shares
CY2022	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1619671	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1722350	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	285471064	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303296612	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303667669	shares
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.12
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
CY2023Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1400300000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1597000000	usd
CY2022Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1375900000	usd
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	67200000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	67300000	usd
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	55900000	usd
CY2023Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1400300000	usd
CY2022Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1375900000	usd
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2023Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	854500000	usd
CY2023	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	673300000	usd
CY2022	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	614600000	usd
CY2021	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	566700000	usd
CY2023	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	110000000.0	usd
CY2022	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	140000000.0	usd
CY2021	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	100000000.0	usd
CY2022	ori	Special Dividend Declared In August2022 And Paid In September2022 Amount Per Share SpecialDividendDeclaredInAugust2022AndPaidInSeptember2022AmountPerShare	1.00
CY2021	ori	Special Dividend Declared In August2021 And Paid In October2021 Amount Per Share SpecialDividendDeclaredInAugust2021AndPaidInOctober2021AmountPerShare	1.50
CY2020	ori	Special Dividend Declared In December2020 And Paid In January2021 Amount Per Share SpecialDividendDeclaredInDecember2020AndPaidInJanuary2021AmountPerShare	1.00
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	220200000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	222100000	usd
CY2023Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0549
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0527
CY2023Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y10M24D
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2023	ori	Rentalexpenseforleasedpremises Rentalexpenseforleasedpremises	76300000	usd
CY2022	ori	Rentalexpenseforleasedpremises Rentalexpenseforleasedpremises	76200000	usd
CY2021	ori	Rentalexpenseforleasedpremises Rentalexpenseforleasedpremises	75600000	usd
CY2023	us-gaap	Operating Lease Expense OperatingLeaseExpense	60600000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	64000000.0	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	65000000.0	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	58100000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	58800000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	51000000.0	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	50600000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	38100000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	42700000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	29000000.0	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	30100000	usd
CY2022Q2	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	-209600000	usd
CY2022Q3	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	-262000000.0	usd
CY2022Q4	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	478600000	usd
CY2022Q1	us-gaap	Revenues Revenues	2206600000	usd
CY2022Q2	us-gaap	Revenues Revenues	1810300000	usd
CY2022Q3	us-gaap	Revenues Revenues	1721000000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	22000000.0	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	21400000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	82100000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	79300000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	280600000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	283100000	usd
CY2023Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	60400000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	60900000	usd
CY2023Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	220200000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	222100000	usd
CY2023Q1	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1594600000	usd
CY2023Q2	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1689300000	usd
CY2023Q3	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1801100000	usd
CY2023Q4	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1785600000	usd
CY2023Q1	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	164000000.0	usd
CY2023Q2	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	108900000	usd
CY2023Q3	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	-40900000	usd
CY2023Q4	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	155400000	usd
CY2023Q1	us-gaap	Revenues Revenues	1758700000	usd
CY2023Q2	us-gaap	Revenues Revenues	1798300000	usd
CY2023Q3	us-gaap	Revenues Revenues	1760100000	usd
CY2023Q4	us-gaap	Revenues Revenues	1941100000	usd
CY2023Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1509500000	usd
CY2023Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1601400000	usd
CY2023Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1696200000	usd
CY2023Q4	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1703600000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	199800000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	155500000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	52600000	usd
CY2023Q4	us-gaap	Net Income Loss NetIncomeLoss	190600000	usd
CY2023Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
CY2023Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.19
CY2023Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.70
CY2023Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2023Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.19
CY2023Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
CY2023Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	291945750	shares
CY2023Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	285426801	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	277010690	shares
CY2023Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	274036118	shares
CY2023Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	293993474	shares
CY2023Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	287882787	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	279924410	shares
CY2023Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	277226628	shares
CY2022Q1	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1955200000	usd
CY2022Q2	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	2020000000	usd
CY2022Q3	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1983100000	usd
CY2022Q4	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1866900000	usd
CY2022Q1	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	251300000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	3042600000	usd
CY2022Q4	us-gaap	Revenues Revenues	2345500000	usd
CY2022Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1823900000	usd
CY2022Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1865000000	usd
CY2022Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1840700000	usd
CY2022Q4	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1696500000	usd
CY2022Q1	us-gaap	Net Income Loss NetIncomeLoss	306300000	usd
CY2022Q2	us-gaap	Net Income Loss NetIncomeLoss	-40100000	usd
CY2022Q3	us-gaap	Net Income Loss NetIncomeLoss	-91700000	usd
CY2022Q4	us-gaap	Net Income Loss NetIncomeLoss	512100000	usd
CY2022Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2022Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.13
CY2022Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.31
CY2022Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.74
CY2022Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2022Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.13
CY2022Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.31
CY2022Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.73
CY2022Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	303582578	shares
CY2022Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	303793432	shares
CY2022Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	303652802	shares
CY2022Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	294290072	shares
CY2022Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	305424592	shares
CY2022Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303793432	shares
CY2022Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303652802	shares
CY2022Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	295996057	shares
CY2023Q4	ori	Number Of Major Segments NumberOfMajorSegments	3	segment
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-67000000.0	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-123900000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-263400000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	751100000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-190900000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2023	us-gaap	Revenues Revenues	7258300000	usd
CY2022	us-gaap	Revenues Revenues	8083700000	usd
CY2021	us-gaap	Revenues Revenues	9341600000	usd
CY2023	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-67000000.0	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2023	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-123900000	usd
CY2022	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-263400000	usd
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	751100000	usd
CY2023	us-gaap	Gain Loss On Investments GainLossOnInvestments	-190900000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	747400000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	857400000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1922100000	usd
CY2023Q4	us-gaap	Assets Assets	26501400000	usd
CY2022Q4	us-gaap	Assets Assets	25159400000	usd
CY2023	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	45600000	usd
CY2023	dei	Auditor Name AuditorName	KPMG LLP
CY2023	dei	Auditor Location AuditorLocation	Chicago, Illinois
CY2023	dei	Auditor Firm AuditorFirmId	185
CY2023Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	14841800000	usd
CY2023Q4	us-gaap	Investments Investments	15867700000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	278300000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	296900000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	678700000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1141800000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5644300000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5321800000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-132400000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-517800000	usd
CY2023Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	58200000	usd
CY2022Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	69500000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	6410700000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6173200000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	598600000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	417800000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	12538200000	usd
CY2023Q4	us-gaap	Supplementary Insurance Information Other Policy Claims And Benefits Payable SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable	150400000	usd
CY2023	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	6445900000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	382500000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	12221500000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	2787800000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Other Policy Claims And Benefits Payable SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable	182200000	usd
CY2022	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	7342100000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	350400000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	11425500000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	2559400000	usd
CY2021Q4	us-gaap	Supplementary Insurance Information Other Policy Claims And Benefits Payable SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable	190600000	usd
CY2021	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	7559800000	usd
CY2023	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	578300000	usd
CY2023	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	2596600000	usd
CY2023	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	680000000.0	usd
CY2023	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	3234100000	usd
CY2023	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	6682900000	usd
CY2022	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	459500000	usd
CY2022	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	2440200000	usd
CY2022	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	591400000	usd
CY2022	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	4194500000	usd
CY2022	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	7511600000	usd
CY2021	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	434300000	usd
CY2021	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	2420900000	usd
CY2021	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	502200000	usd
CY2021	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	4496300000	usd
CY2021	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	7685000000	usd
CY2023	us-gaap	Direct Premiums Earned DirectPremiumsEarned	8846400000	usd
CY2023	us-gaap	Ceded Premiums Earned CededPremiumsEarned	2496700000	usd
CY2023	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	96200000	usd
CY2023	us-gaap	Premiums Earned Net PremiumsEarnedNet	6445900000	usd
CY2023	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.015
CY2022	us-gaap	Direct Premiums Earned DirectPremiumsEarned	9563300000	usd
CY2022	us-gaap	Ceded Premiums Earned CededPremiumsEarned	2310500000	usd
CY2022	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	89400000	usd
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	7342100000	usd
CY2022	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.012
CY2021	us-gaap	Direct Premiums Earned DirectPremiumsEarned	9523600000	usd
CY2021	us-gaap	Ceded Premiums Earned CededPremiumsEarned	2039000000	usd
CY2021	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	75100000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	7559800000	usd
CY2021	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.010

Files In Submission

Name	View Source	Status
FilingSummary.xml	Edgar Link	unprocessable
0000074260-24-000021-index-headers.html	Edgar Link	pending
0000074260-24-000021-index.html	Edgar Link	pending
0000074260-24-000021.txt	Edgar Link	pending
0000074260-24-000021-xbrl.zip	Edgar Link	pending
ex21_2023.htm	Edgar Link	pending
ex231ori10kconsent.htm	Edgar Link	pending
ex24_2023.htm	Edgar Link	pending
ex311ceosection302certific.htm	Edgar Link	pending
ex312cfosection302certific.htm	Edgar Link	pending
ex321ceosection906certific.htm	Edgar Link	pending
ex322cfosection906certific.htm	Edgar Link	pending
exhibit97oricompensation.htm	Edgar Link	pending
exhibit97oricompensation001.jpg	Edgar Link	pending
exhibit97oricompensation002.jpg	Edgar Link	pending
exhibit97oricompensation003.jpg	Edgar Link	pending
exhibit97oricompensation004.jpg	Edgar Link	pending
exhibit97oricompensation005.jpg	Edgar Link	pending
exhibit97oricompensation006.jpg	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
ori-20231231.htm	Edgar Link	pending
ori-20231231.xsd	Edgar Link	pending
ori-20231231_g1.jpg	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
ori-20231231_cal.xml	Edgar Link	unprocessable
ori-20231231_def.xml	Edgar Link	unprocessable
ori-20231231_lab.xml	Edgar Link	unprocessable
ori-20231231_pre.xml	Edgar Link	unprocessable
ori-20231231_htm.xml	Edgar Link	completed
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$ORI
OLD REPUBLIC INTERNATIONAL CORP Stock $ori

2024 Q1 Form 10-K Financial Statement

#000007426024000021 Filed on February 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ORI OLD REPUBLIC INTERNATIONAL CORP Stock $ori

2024 Q1 Form 10-K Financial Statement

#000007426024000021 Filed on February 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ORI
OLD REPUBLIC INTERNATIONAL CORP Stock $ori