$ORI
OLD REPUBLIC INTERNATIONAL CORP Stock $ori

$ori Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000007426023000014 Filed on February 24, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$1.759B	$1.967B	$8.347B
YoY Change	-20.3%	-27.7%	-10.65%
Cost Of Revenue	$600.2M		$2.428B
YoY Change	-0.69%		1.23%
Gross Profit	$1.159B		$5.919B
YoY Change	-27.69%		-14.75%
Gross Profit Margin	65.87%		70.91%
Selling, General & Admin	$888.6M	$1.115B	$4.719B
YoY Change	26035.29%	21336.54%	20689.43%
% of Gross Profit	76.7%		79.73%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization			$28.30M
YoY Change			4.04%
% of Gross Profit			0.48%
Operating Expenses	$1.493B	$1.680B	$7.159B
YoY Change	-17.4%	-12.27%	-2.77%
Operating Profit	-$334.0M		-$1.240B
YoY Change	63.09%		195.36%
Interest Expense	-$18.90M	$361.6M	-$330.1M
YoY Change	-130.05%	-19.01%	-147.5%
% of Operating Profit
Other Income/Expense, Net		$100.0K
YoY Change
Pretax Income	$249.2M	$649.0M	$857.4M
YoY Change	-34.87%	-17.8%	-55.39%
Income Tax	$49.30M	$136.8M	$170.9M
% Of Pretax Income	19.78%	21.08%	19.93%
Net Earnings	$199.8M	$512.1M	$686.4M
YoY Change	-34.77%	-18.33%	-55.26%
Net Earnings / Revenue	11.36%	26.03%	8.22%
Basic Earnings Per Share	$0.68	$1.74	$2.28
Diluted Earnings Per Share	$0.68	$1.730M	$2.260M
COMMON SHARES
Basic Shares Outstanding	297.1M shares	294.3M shares	301.7M shares
Diluted Shares Outstanding	294.0M shares	296.0M shares	303.3M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$93.70M	$81.00M
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		$178.1M
YoY Change		2.06%
Intangibles
YoY Change
Long-Term Investments	$16.00B	$3.359B	$3.359B
YoY Change	-2.9%	-79.74%	-79.74%
Other Assets
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$25.40B	$25.16B	$25.16B
YoY Change	1.11%	0.71%	0.71%
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	$535.5M	$514.8M	$514.8M
YoY Change	-12.83%	-10.24%	-10.24%
LONG-TERM LIABILITIES
Long-Term Debt	$1.590B	$1.597B	$1.597B
YoY Change	-0.25%	0.54%	0.54%
Other Long-Term Liabilities	$553.1M	$1.076B	$1.076B
YoY Change	-1.62%	69.76%	69.76%
Total Long-Term Liabilities	$2.143B	$2.673B	$2.673B
YoY Change	-0.61%	20.27%	20.27%
TOTAL LIABILITIES
Total Short-Term Liabilities	$535.5M	$514.8M	$514.8M
Total Long-Term Liabilities	$2.143B	$2.673B	$2.673B
Total Liabilities	$19.07B	$18.99B	$18.99B
YoY Change	3.8%	5.0%	5.0%
SHAREHOLDERS EQUITY
Retained Earnings	$5.450B	$5.320B
YoY Change	-0.01%	2.03%
Common Stock	$1.326B	$1.439B
YoY Change	-21.97%	-14.55%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$6.332B	$6.166B	$6.166B
YoY Change
Total Liabilities & Shareholders Equity	$25.40B	$25.16B	$25.16B
YoY Change	1.11%	0.71%	0.71%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$199.8M	$512.1M	$686.4M
YoY Change	-34.77%	-18.33%	-55.26%
Depreciation, Depletion And Amortization			$28.30M
YoY Change			4.04%
Cash From Operating Activities	$156.6M	$267.3M	$1.171B
YoY Change	-43.75%	-21.64%	-10.76%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$300.0K	-$60.30M	$12.30M
YoY Change	-105.17%	-132.07%
Cash From Investing Activities	$49.30M	-$60.30M	-$415.0M
YoY Change	-117.27%	-132.07%	-55.69%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$193.3M	-228.4M	-$832.7M
YoY Change	245.18%	-54.72%	148.05%
NET CHANGE
Cash From Operating Activities	$156.6M	267.3M	$1.171B
Cash From Investing Activities	$49.30M	-60.30M	-$415.0M
Cash From Financing Activities	-$193.3M	-228.4M	-$832.7M
Net Change In Cash	$12.60M	-21.40M	-$77.10M
YoY Change	-120.0%	-186.64%	-295.69%
FREE CASH FLOW
Cash From Operating Activities	$156.6M	$267.3M	$1.171B
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0000074260
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	0	usd
CY2021Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	0	usd
CY2021Q4	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
CY2021Q4	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
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2021Q4	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
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	296932316	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	307565632	shares
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
CY2020	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.84
CY2022	ori	Special Dividends Paid In2021 SpecialDividendsPaidIn2021	764500000	usd
CY2022	ori	Special Dividends Paid In2022 SpecialDividendsPaidIn2022	308400000	usd
CY2022Q4	ori	Liabilties Related To Escrow LiabiltiesRelatedToEscrow	2022700000	usd
CY2021Q4	ori	Liabilties Related To Escrow LiabiltiesRelatedToEscrow	2662400000	usd
CY2022	ori	Reinsurance Unrecoverable Amount ReinsuranceUnrecoverableAmount	0	usd
CY2021	ori	Reinsurance Unrecoverable Amount ReinsuranceUnrecoverableAmount	0	usd
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Expiration Period SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod	P10Y
CY2022Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	0	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P3Y
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2021Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022	us-gaap	Common Stock Voting Rights CommonStockVotingRights	1
CY2022Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2021Q4	us-gaap	Operating Lease Liability Statement Of Financial Position Extensible List OperatingLeaseLiabilityStatementOfFinancialPositionExtensibleList	http://fasb.org/us-gaap/2021-01-31#OtherLiabilities
CY2022Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	5468500000	usd
CY2021Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	4825100000	usd
CY2020Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	4295100000	usd
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	001-10607
CY2022	dei	Entity Registrant Name EntityRegistrantName	OLD REPUBLIC INTERNATIONAL CORPORATION
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	36-2678171
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	307 North Michigan Avenue
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Chicago
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	IL
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	60601
CY2022	dei	City Area Code CityAreaCode	312
CY2022	dei	Local Phone Number LocalPhoneNumber	346-8100
CY2022	dei	Security12b Title Security12bTitle	Common Stock / $1 par value
CY2022	dei	Trading Symbol TradingSymbol	ORI
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	6341896350	usd
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	297145435	shares
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2022	us-gaap	Revenues Revenues	8083700000	usd
CY2021	us-gaap	Revenues Revenues	9341600000	usd
CY2020	us-gaap	Revenues Revenues	7166000000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	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
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	688400000	usd
CY2022Q4	us-gaap	Assets Assets	25159400000	usd
CY2021Q4	us-gaap	Assets Assets	24981800000	usd
CY2022	ori	Total Premiums And Fees TotalPremiumsAndFees	7675300000	usd
CY2020	ori	Total Premiums And Fees TotalPremiumsAndFees	6737800000	usd
CY2020	us-gaap	Net Investment Income NetInvestmentIncome	438900000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	434300000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	459500000	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
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-7400000	usd
CY2022	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	185700000	usd
CY2021	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	6900000	usd
CY2020	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	14200000	usd
CY2022	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	-123500000	usd
CY2021	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0	usd
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	281200000	usd
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CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2022	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	-123500000	usd
CY2022Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	924900000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6166200000	usd
CY2022	ori	Special Dividend Declared In August2022 And Paid In September2022 Amount Per Share SpecialDividendDeclaredInAugust2022AndPaidInSeptember2022AmountPerShare	1.00
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	12600000	shares
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	22.23
CY2023Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1300000	shares
CY2023Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	35600000	usd
CY2023Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.85
CY2023Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	133100000	usd
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
CY2022	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	140000000.0	usd
CY2021	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	100000000.0	usd
CY2020	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	37700000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11746700000	usd
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	10675700000	usd
CY2022Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	860800000	usd
CY2021Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	565700000	usd
CY2022Q4	ori	Subtotal Of Available For Sale Debt Securities And Other Short Term Investments SubtotalOfAvailableForSaleDebtSecuritiesAndOtherShortTermInvestments	12607600000	usd
CY2021Q4	ori	Subtotal Of Available For Sale Debt Securities And Other Short Term Investments SubtotalOfAvailableForSaleDebtSecuritiesAndOtherShortTermInvestments	11241400000	usd
CY2022Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	3220900000	usd
CY2021Q4	us-gaap	Equity Securities Fv Ni Current And Noncurrent EquitySecuritiesFvNiCurrentAndNoncurrent	5302800000	usd
CY2022Q4	us-gaap	Other Investments OtherInvestments	31200000	usd
CY2021Q4	us-gaap	Other Investments OtherInvestments	32000000.0	usd
CY2022Q4	us-gaap	Investments Investments	15859900000	usd
CY2021Q4	us-gaap	Investments Investments	16576300000	usd
CY2022Q4	us-gaap	Cash Cash	81000000.0	usd
CY2021Q4	us-gaap	Cash Cash	158100000	usd
CY2022Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	106700000	usd
CY2021Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	84400000	usd
CY2022Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1927500000	usd
CY2021Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1768700000	usd
CY2022Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	15700000	usd
CY2021Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	11800000	usd
CY2022Q4	us-gaap	Funds Held Under Reinsurance Agreements Asset FundsHeldUnderReinsuranceAgreementsAsset	323000000.0	usd
CY2021Q4	us-gaap	Funds Held Under Reinsurance Agreements Asset FundsHeldUnderReinsuranceAgreementsAsset	258100000	usd
CY2022Q4	us-gaap	Reinsurance Recoverables On Paid Losses ReinsuranceRecoverablesOnPaidLosses	119400000	usd
CY2021Q4	us-gaap	Reinsurance Recoverables On Paid Losses ReinsuranceRecoverablesOnPaidLosses	118200000	usd
CY2022Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	5468500000	usd
CY2021Q4	ori	Reinsurance Recoverables Policy And Claim Reserves ReinsuranceRecoverablesPolicyAndClaimReserves	4825100000	usd
CY2022Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	382500000	usd
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	350400000	usd
CY2022Q4	us-gaap	Other Assets OtherAssets	874800000	usd
CY2021Q4	us-gaap	Other Assets OtherAssets	830300000	usd
CY2022Q4	ori	Total Other Assets TotalOtherAssets	9299500000	usd
CY2021Q4	ori	Total Other Assets TotalOtherAssets	8405500000	usd
CY2022Q4	us-gaap	Assets Assets	25159400000	usd
CY2021Q4	us-gaap	Assets Assets	24981800000	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
CY2022Q4	us-gaap	Unearned Premiums UnearnedPremiums	2787800000	usd
CY2021Q4	us-gaap	Unearned Premiums UnearnedPremiums	2559400000	usd
CY2022Q4	ori	Other Policholders Benefits And Funds OtherPolicholdersBenefitsAndFunds	191000000.0	usd
CY2021Q4	ori	Other Policholders Benefits And Funds OtherPolicholdersBenefitsAndFunds	192600000	usd
CY2021Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	ori	Total Policy Liabilities And Accruals TotalPolicyLiabilitiesAndAccruals	15200400000	usd
CY2021Q4	ori	Total Policy Liabilities And Accruals TotalPolicyLiabilitiesAndAccruals	14177500000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	514800000	usd
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	573500000	usd
CY2022Q4	ori	Reinsurance Balances And Funds Held ReinsuranceBalancesAndFundsHeld	1079400000	usd
CY2021Q4	ori	Reinsurance Balances And Funds Held ReinsuranceBalancesAndFundsHeld	866000000.0	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	40900000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	249500000	usd
CY2022Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1597000000	usd
CY2021Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1588500000	usd
CY2022Q4	us-gaap	Other Liabilities OtherLiabilities	560500000	usd
CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	633300000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	18993200000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	18088600000	usd
CY2022Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	usd
CY2021Q4	us-gaap	Preferred Stock Value Outstanding PreferredStockValueOutstanding	0	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	296900000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	307500000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1141800000	usd
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1376100000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5319700000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5214000000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-522700000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	78000000.0	usd
CY2022Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	69500000	usd
CY2021Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	82500000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6166200000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	6893200000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	25159400000	usd
CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	24981800000	usd
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2021Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1.00
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	296932316	shares
CY2021Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	307565632	shares
CY2022	us-gaap	Premiums Earned Net PremiumsEarnedNet	7342100000	usd
CY2021	us-gaap	Premiums Earned Net PremiumsEarnedNet	7559800000	usd
CY2020	us-gaap	Premiums Earned Net PremiumsEarnedNet	6345800000	usd
CY2022	ori	Title Escrow And Other Fees TitleEscrowAndOtherFees	333200000	usd
CY2021	ori	Title Escrow And Other Fees TitleEscrowAndOtherFees	443800000	usd
CY2020	ori	Title Escrow And Other Fees TitleEscrowAndOtherFees	391900000	usd
CY2022	ori	Total Premiums And Fees TotalPremiumsAndFees	7675300000	usd
CY2021	ori	Total Premiums And Fees TotalPremiumsAndFees	8003600000	usd
CY2020	ori	Total Premiums And Fees TotalPremiumsAndFees	6737800000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	459500000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	434300000	usd
CY2020	us-gaap	Net Investment Income NetInvestmentIncome	438900000	usd
CY2022	us-gaap	Other Income OtherIncome	149900000	usd
CY2021	us-gaap	Other Income OtherIncome	145600000	usd
CY2020	us-gaap	Other Income OtherIncome	131200000	usd
CY2022	ori	Total Operating Revenues TotalOperatingRevenues	8284900000	usd
CY2021	ori	Total Operating Revenues TotalOperatingRevenues	8583500000	usd
CY2020	ori	Total Operating Revenues TotalOperatingRevenues	7308000000	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2021	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	6900000	usd
CY2020	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	14200000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2022	us-gaap	Revenues Revenues	8083700000	usd
CY2021	us-gaap	Revenues Revenues	9341600000	usd
CY2020	us-gaap	Revenues Revenues	7166000000	usd
CY2022	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2427700000	usd
CY2021	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2398200000	usd
CY2020	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	2472500000	usd
CY2022	us-gaap	Policyholder Dividends PolicyholderDividends	12500000	usd
CY2021	us-gaap	Policyholder Dividends PolicyholderDividends	22700000	usd
CY2020	us-gaap	Policyholder Dividends PolicyholderDividends	18900000	usd
CY2022	ori	Underwriting Acquisition And Other Expenses UnderwritingAcquisitionAndOtherExpenses	4719200000	usd
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-27100000	usd
CY2021	ori	Underwriting Acquisition And Other Expenses UnderwritingAcquisitionAndOtherExpenses	4942300000	usd
CY2020	ori	Underwriting Acquisition And Other Expenses UnderwritingAcquisitionAndOtherExpenses	3942400000	usd
CY2022	ori	Interest And Other Charges InterestAndOtherCharges	66700000	usd
CY2021	ori	Interest And Other Charges InterestAndOtherCharges	56200000	usd
CY2020	ori	Interest And Other Charges InterestAndOtherCharges	43700000	usd
CY2022	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7226300000	usd
CY2021	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	7419500000	usd
CY2020	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	6477500000	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
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	688400000	usd
CY2022	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	226000000.0	usd
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	221700000	usd
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	156900000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-55100000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	165900000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	170900000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	387700000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	129700000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	558600000	usd
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.08
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.87
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.05
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
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
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	298407921	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303296612	shares
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	72300000	usd
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303667669	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	298898673	shares
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	558600000	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
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	335500000	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
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-7100000	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
CY2020	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	342700000	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
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
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	270300000	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
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments And Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax	88400000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	3000000.0	usd
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	7400000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax	3600000	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
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	84800000	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
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	17800000	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
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	67000000.0	usd
CY2022	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-11800000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	400000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	2900000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-600700000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-206000000.0	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	206300000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85700000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1328300000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	765000000.0	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	558600000	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
CY2020	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	2500000	usd
CY2022	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	158600000	usd
CY2021	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	174800000	usd
CY2020	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	123400000	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
CY2020	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	340700000	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
CY2020	us-gaap	Increase Decrease In Other Policyholder Funds IncreaseDecreaseInOtherPolicyholderFunds	34600000	usd
CY2022	ori	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	54700000	usd
CY2021	ori	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	-151400000	usd
CY2020	ori	Increase Decrease In Income Taxes Net IncreaseDecreaseInIncomeTaxesNet	18300000	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
CY2020	us-gaap	Increase Decrease In Funds Held Under Reinsurance Agreements IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements	-77000000.0	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	14200000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1900000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	160900000	usd
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	176200000	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
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1185000000	usd
CY2022	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1356100000	usd
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1410900000	usd
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1280100000	usd
CY2022	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	1403300000	usd
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	338000000.0	usd
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	399500000	usd
CY2022	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	2249400000	usd
CY2021	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	540700000	usd
CY2020	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	162300000	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
CY2020	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	8800000	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
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	2059300000	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
CY2020	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	321000000.0	usd
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	59700000	usd
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	55500000	usd
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	50200000	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
CY2020	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	265000000.0	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
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	300000	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
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-845200000	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
CY2020	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	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
CY2020	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	6700000	usd
CY2022	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	usd
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	21700000	usd
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	8600000	usd
CY2022	us-gaap	Origination Of Loans To Employee Stock Ownership Plans OriginationOfLoansToEmployeeStockOwnershipPlans	0	usd
CY2021	us-gaap	Origination Of Loans To Employee Stock Ownership Plans OriginationOfLoansToEmployeeStockOwnershipPlans	0	usd
CY2020	us-gaap	Origination Of Loans To Employee Stock Ownership Plans OriginationOfLoansToEmployeeStockOwnershipPlans	50000000.0	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	579700000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1019200000	usd
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	250100000	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
CY2020	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	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
CY2020	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	2000000.0	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
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-300000000.0	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
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	39800000	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
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	78800000	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
CY2022	us-gaap	Interest Paid Net InterestPaidNet	65800000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	53400000	usd
CY2020	us-gaap	Interest Paid Net InterestPaidNet	41400000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	226500000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	236500000	usd
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	149300000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6166200000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	6893200000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	558600000	usd
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
CY2020Q4	ori	Title Premium And Fee Revenues Stemming From Direct Operations TitlePremiumAndFeeRevenuesStemmingFromDirectOperations	0.249
CY2022	ori	Noninsurance Contract Revenue NoninsuranceContractRevenue	210100000	usd
CY2021	ori	Noninsurance Contract Revenue NoninsuranceContractRevenue	210200000	usd
CY2020	ori	Noninsurance Contract Revenue NoninsuranceContractRevenue	192200000	usd
CY2022	us-gaap	Depreciation Depreciation	28300000	usd
CY2021	us-gaap	Depreciation Depreciation	27200000	usd
CY2020	us-gaap	Depreciation Depreciation	26900000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	178100000	usd
CY2021Q4	us-gaap	Goodwill Goodwill	174500000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	1409600000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	1393600000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	5984200000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	5744000000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	4782000000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	4449200000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	160400000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	159700000	usd
CY2022Q4	ori	A5 Year Average Ae Reserves To Orgig Reserves A5YearAverageAEReservesToORGIGReserves	0.004
CY2022Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	12336300000	usd
CY2022Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	11746700000	usd
CY2022Q4	ori	Bonds On Deposit With Governmental Authorities BondsOnDepositWithGovernmentalAuthorities	1010700000	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
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	1716
CY2022Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	236
CY2022Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	1952
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	2794700000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	61800000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	217300000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	10300000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	3012000000	usd
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsNumberOfPositions	419
CY2021Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Number Of Positions DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerNumberOfPositions	32
CY2021Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	451
CY2022	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	-123500000	usd
CY2022Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	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
CY2020	ori	Net Unrealized Gains Losses Recognizedfrom Changesin Fair Valueof Equity Securities Held NetUnrealizedGainsLossesRecognizedfromChangesinFairValueofEquitySecuritiesHeld	-130900000	usd
CY2022Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	860800000	usd
CY2021Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	565700000	usd
CY2022	ori	Gross Investment Income GrossInvestmentIncome	469300000	usd
CY2021	ori	Gross Investment Income GrossInvestmentIncome	440400000	usd
CY2020	ori	Gross Investment Income GrossInvestmentIncome	445600000	usd
CY2022	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	9700000	usd
CY2021	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	6100000	usd
CY2020	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	6600000	usd
CY2022	us-gaap	Net Investment Income NetInvestmentIncome	459500000	usd
CY2021	us-gaap	Net Investment Income NetInvestmentIncome	434300000	usd
CY2020	us-gaap	Net Investment Income NetInvestmentIncome	438900000	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
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	10900000	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
CY2020	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	18400000	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
CY2020	us-gaap	Debt Securities Available For Sale Realized Gain Loss DebtSecuritiesAvailableForSaleRealizedGainLoss	-7400000	usd
CY2022	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	185700000	usd
CY2021	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	6900000	usd
CY2020	ori	Realized Investment Gains Losses From Sales RealizedInvestmentGainsLossesFromSales	14200000	usd
CY2022	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	-123500000	usd
CY2021	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0	usd
CY2020	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale Recognized In Earnings OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSaleRecognizedInEarnings	0	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	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
CY2020	ori	Income Taxes Credits On Realized Investment Gains Losses IncomeTaxesCreditsOnRealizedInvestmentGainsLosses	-29800000	usd
CY2022	ori	Net Realized Gains Losses NetRealizedGainsLosses	-158600000	usd
CY2021	ori	Net Realized Gains Losses NetRealizedGainsLosses	598400000	usd
CY2020	ori	Net Realized Gains Losses NetRealizedGainsLosses	-112100000	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
CY2020	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	270300000	usd
CY2022	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 style="width:59.995%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.520%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.147%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.520%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.147%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.520%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.151%"/><td style="width:0.1%"/></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 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 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><td colspan="3" style="padding:0 1pt"/><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%">2020</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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">328.0 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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%">325.4 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;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%">Acquisition costs deferred:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/></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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">326.0 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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%">127.4 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">50.7 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 25.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Sub-total</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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%">504.2 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">(501.5)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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%">2.6 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">382.5 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">328.0 </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"/></tr></table></div>
CY2022	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 style="width:59.995%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.520%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.147%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.520%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.147%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.520%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.151%"/><td style="width:0.1%"/></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 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 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><td colspan="3" style="padding:0 1pt"/><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%">2020</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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">$</span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">328.0 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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%">325.4 </span></td><td style="background-color:#cceeff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;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%">Acquisition costs deferred:</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:1pt solid #000000;padding:0 1pt"/></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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">326.0 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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%">127.4 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">50.7 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 25.75pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Sub-total</span></td><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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%">504.2 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">(501.5)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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 colspan="3" style="background-color:#ffffff;padding:0 1pt"/><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%">2.6 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></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 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%">$</span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">382.5 </span></td><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</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 colspan="3" style="background-color:#cceeff;padding:0 1pt"/><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%">328.0 </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"/></tr></table></div>
CY2021Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	350400000	usd
CY2020Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	328000000.0	usd
CY2019Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	325400000	usd
CY2022	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	623500000	usd
CY2021	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	524600000	usd
CY2020	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	504200000	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
CY2020	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	501500000	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
CY2020	us-gaap	Deferred Policy Acquisition Costs Period Increase Decrease DeferredPolicyAcquisitionCostsPeriodIncreaseDecrease	2600000	usd
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
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
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	9929500000	usd
CY2021Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4125300000	usd
CY2020Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	3650500000	usd
CY2019Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	3249700000	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
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	6679700000	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
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	2557800000	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
CY2020	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-83800000	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
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	2474000000	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
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	795500000	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
CY2020	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	1337700000	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
CY2020	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	2133200000	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
CY2020Q4	ori	Liability For Unpaid Claims And Claims Adjustment Expense Net Of Reinsurance Losses Recoverable LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNetOfReinsuranceLossesRecoverable	7020400000	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 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
CY2022	ori	One Year Development Of Consolidated Reserves OneYearDevelopmentOfConsolidatedReserves	0.039
CY2021	ori	One Year Development Of Consolidated Reserves OneYearDevelopmentOfConsolidatedReserves	0.030
CY2020	ori	One Year Development Of Consolidated Reserves OneYearDevelopmentOfConsolidatedReserves	0.013
CY2022	ori	Three Year Average Annual Development Of Consolidated Reserves ThreeYearAverageAnnualDevelopmentOfConsolidatedReserves	0.027
CY2022Q4	ori	Liabilityfor Claimsand Claims Adjustment Expense Gross LiabilityforClaimsandClaimsAdjustmentExpenseGross	121300000	usd
CY2021Q4	ori	Liabilityfor Claimsand Claims Adjustment Expense Gross LiabilityforClaimsandClaimsAdjustmentExpenseGross	118100000	usd
CY2022Q4	ori	Liabilityfor Claimsand Claims Adjustment Expensefrom Asbestosisand Environmental Exposure LiabilityforClaimsandClaimsAdjustmentExpensefromAsbestosisandEnvironmentalExposure	84000000.0	usd
CY2021Q4	ori	Liabilityfor Claimsand Claims Adjustment Expensefrom Asbestosisand Environmental Exposure LiabilityforClaimsandClaimsAdjustmentExpensefromAsbestosisandEnvironmentalExposure	77200000	usd
CY2022Q4	ori	General Liability Insurance Face Amount GeneralLiabilityInsuranceFaceAmount	10000000.0	usd
CY2022Q4	us-gaap	Retention Payable RetentionPayable	500000	usd
CY2022	ori	Average Five Year Survival Ratio Duration Gross AverageFiveYearSurvivalRatioDurationGross	P6Y4M24D
CY2022	ori	Average Five Year Survival Ratio Duration Net AverageFiveYearSurvivalRatioDurationNet	P7Y7M6D
CY2021	ori	Average Five Year Survival Ratio Duration Gross AverageFiveYearSurvivalRatioDurationGross	P5Y10M24D
CY2021	ori	Average Five Year Survival Ratio Duration Net AverageFiveYearSurvivalRatioDurationNet	P6Y9M18D
CY2022Q4	ori	Shortduration Insurance Contracts Discounted Liabilityfor Unpaid Claimsand Allocated Claim Adjustment Expense Net ShortdurationInsuranceContractsDiscountedLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseNet	6529000000	usd
CY2021Q4	ori	Shortduration Insurance Contracts Discounted Liabilityfor Unpaid Claimsand Allocated Claim Adjustment Expense Net ShortdurationInsuranceContractsDiscountedLiabilityforUnpaidClaimsandAllocatedClaimAdjustmentExpenseNet	6302200000	usd
CY2022Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	4695300000	usd
CY2021Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	4120900000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem	656600000	usd
CY2021Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Other Reconciling Item ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem	674100000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	340500000	usd
CY2021Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claims Adjustment Expense Accumulated Unallocated Claim Adjustment Expense ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense	328200000	usd
CY2022Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Aggregate Reconciling Items ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems	997100000	usd
CY2021Q4	us-gaap	Shortduration Insurance Contracts Liability For Unpaid Claims And Claim Adjustment Expense Aggregate Reconciling Items ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems	1002400000	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
CY2022Q4	us-gaap	Workers Compensation Discount Amount WorkersCompensationDiscountAmount	184700000	usd
CY2021Q4	us-gaap	Workers Compensation Discount Amount WorkersCompensationDiscountAmount	174800000	usd
CY2022	ori	Interest Accretion Amount InterestAccretionAmount	9600000	usd
CY2021	ori	Interest Accretion Amount InterestAccretionAmount	42000000.0	usd
CY2020	ori	Interest Accretion Amount InterestAccretionAmount	35700000	usd
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
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
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
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Tax Exempt Income EffectiveIncomeTaxRateReconciliationTaxExemptIncome	-0.005
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
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Deductions Dividends EffectiveIncomeTaxRateReconciliationDeductionsDividends	0.018
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
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Meals And Entertainment EffectiveIncomeTaxRateReconciliationNondeductibleExpenseMealsAndEntertainment	0.001
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
CY2020	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.001
CY2022	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.199
CY2021	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.202
CY2020	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.189
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
CY2020Q4	ori	Deferred Tax Assets Tax Losses Claims And Settlement Expenses DeferredTaxAssetsTaxLossesClaimsAndSettlementExpenses	201600000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	22600000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	42400000	usd
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	63000000.0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7600000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	9600000	usd
CY2020Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	11700000	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
CY2020Q4	ori	Alternative Minimum Tax Amt Credit Carry Forward AlternativeMinimumTaxAmtCreditCarryForward	9000000.0	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
CY2020Q4	ori	Deferred Tax Asset Operating Lease Rightof Use Asset DeferredTaxAssetOperatingLeaseRightofUseAsset	52000000.0	usd
CY2022Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	17100000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	12300000	usd
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	15700000	usd
CY2022Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	321600000	usd
CY2021Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	337500000	usd
CY2020Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	353200000	usd
CY2022Q4	ori	Deferred Tax Liabilties Unearned Premiums DeferredTaxLiabiltiesUnearnedPremiums	63300000	usd
CY2021Q4	ori	Deferred Tax Liabilties Unearned Premiums DeferredTaxLiabiltiesUnearnedPremiums	61000000.0	usd
CY2020Q4	ori	Deferred Tax Liabilties Unearned Premiums DeferredTaxLiabiltiesUnearnedPremiums	41600000	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
CY2020Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Policy Acquisition Cost DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost	65000000.0	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
CY2020Q4	ori	Deferred Tax Liabilities Fixed Maturity Securities Adjusted To Cost DeferredTaxLiabilitiesFixedMaturitySecuritiesAdjustedToCost	4400000	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
CY2020Q4	us-gaap	Deferred Tax Liabilities Unrealized Gains On Trading Securities DeferredTaxLiabilitiesUnrealizedGainsOnTradingSecurities	295900000	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
CY2020Q4	ori	Deferred Tax Liabilities Title Plants And Records DeferredTaxLiabilitiesTitlePlantsAndRecords	2800000	usd
CY2022Q4	ori	Deferredtax Liabilities Tcja Discountedreservestransitionadjustment DeferredtaxLiabilitiesTCJADiscountedreservestransitionadjustment	10300000	usd
CY2021Q4	ori	Deferredtax Liabilities Tcja Discountedreservestransitionadjustment DeferredtaxLiabilitiesTCJADiscountedreservestransitionadjustment	13800000	usd
CY2020Q4	ori	Deferredtax Liabilities Tcja Discountedreservestransitionadjustment DeferredtaxLiabilitiesTCJADiscountedreservestransitionadjustment	17200000	usd
CY2022Q4	ori	Deferred Tax Liability Operating Lease Liability DeferredTaxLiabilityOperatingLeaseLiability	41900000	usd
CY2021Q4	ori	Deferred Tax Liability Operating Lease Liability DeferredTaxLiabilityOperatingLeaseLiability	45800000	usd
CY2020Q4	ori	Deferred Tax Liability Operating Lease Liability DeferredTaxLiabilityOperatingLeaseLiability	48400000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	20100000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	17200000	usd
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	14900000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	362500000	usd
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	586900000	usd
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	490600000	usd
CY2022Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	40900000	usd
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	249500000	usd
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	137300000	usd
CY2022Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	36300000	usd
CY2022Q4	ori	Alternative Minimum Tax Amt Credit Carry Forward AlternativeMinimumTaxAmtCreditCarryForward	9000000.0	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
CY2021Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	551900000	usd
CY2021Q4	ori	Defined Benefit Plan Securitiesat Net Asset Value DefinedBenefitPlanSecuritiesatNetAssetValue	4000000.0	usd
CY2022	ori	Number Of New Common Stock Shares Available Under The2022 Incentive Compensation Plan NumberOfNewCommonStockSharesAvailableUnderThe2022IncentiveCompensationPlan	20000000.0	shares
CY2022	ori	Maximum Numberof Common Stock Shares Available Under2016 Stock Option Plan MaximumNumberofCommonStockSharesAvailableUnder2016StockOptionPlan	4700000	shares
CY2022	ori	Maximum Number Of Common Shares Available Under The2022 Incentive Compensation Plan MaximumNumberOfCommonSharesAvailableUnderThe2022IncentiveCompensationPlan	21500000	shares
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9000000.0	usd
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3200000	usd
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2100000	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
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	400000	usd
CY2022Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	18900000	usd
CY2022	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y
CY2022Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Within One Year Of Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateWithinOneYearOfGrantDate	0.10
CY2022Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year One And Year Two Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearOneAndYearTwoGrantDate	0.15
CY2022Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year Two And Year Three Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearTwoAndYearThreeGrantDate	0.20
CY2022Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year Three And Year Four Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearThreeAndYearFourGrantDate	0.25
CY2022Q4	ori	Sharebased Compensation Arrangement By Share Based Payment Award Vesting Rate Between Year Four And Year Five Grant Date SharebasedCompensationArrangementByShareBasedPaymentAwardVestingRateBetweenYearFourAndYearFiveGrantDate	0.30
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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.17
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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0572
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
CY2020	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P7Y
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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0072
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
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	8009237	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2019Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	18.43
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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1901100	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	17.24
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
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	397653	shares
CY2020	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	14.44
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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	18033	shares
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	16.72
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
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
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	6138602	shares
CY2020Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	17.81
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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	0.88
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
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
CY2022	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	24300000	usd
CY2021	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	56300000	usd
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	5700000	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
CY2020	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2800000	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
CY2020	us-gaap	Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions	500000	usd
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
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
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
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
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
CY2022Q4	ori	Ori401k Savings And Profit Sharing Plan Unallocated Shares ORI401kSavingsAndProfitSharingPlanUnallocatedShares	4763910	shares
CY2016Q3	ori	Stockacquiredduringperiodvalueemployeestockownershipplan Stockacquiredduringperiodvalueemployeestockownershipplan	34000000.0	usd
CY2019	ori	Stockacquiredduringperiodvalueemployeestockownershipplan Stockacquiredduringperiodvalueemployeestockownershipplan	50000000.0	usd
CY2021	ori	Stockacquiredduringperiodvalueemployeestockownershipplan Stockacquiredduringperiodvalueemployeestockownershipplan	50000000.0	usd
CY2022Q4	ori	Employee Savings And Stock Ownership Plan Number Of Allocated Shares EmployeeSavingsAndStockOwnershipPlanNumberOfAllocatedShares	19636025	shares
CY2022Q4	ori	Ori401k Savings And Profit Sharing Plan Number Of Allocated Shares To Employees ORI401kSavingsAndProfitSharingPlanNumberOfAllocatedSharesToEmployees	14872115	shares
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	558600000	usd
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
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	298407921	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
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	490752	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
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	298898673	shares
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.08
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.87
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.26
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.05
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
CY2022Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1375900000	usd
CY2021Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	1588500000	usd
CY2021Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1735700000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	67300000	usd
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	55900000	usd
CY2020	us-gaap	Interest Expense Debt InterestExpenseDebt	42500000	usd
CY2022Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1375900000	usd
CY2021Q4	us-gaap	Debt Instrument Fair Value DebtInstrumentFairValue	1735700000	usd
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	75000000	shares
CY2021Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500000000	shares
CY2022Q4	us-gaap	Statutory Accounting Practices Statutory Amount Available For Dividend Payments Without Regulatory Approval StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval	924900000	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
CY2020	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	472400000	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
CY2020	ori	Extra Ordinary Dividends Received From Subsidiaries ExtraOrdinaryDividendsReceivedFromSubsidiaries	37700000	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
CY2022Q4	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	450000000.0	usd
CY2022	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	281200000	usd
CY2022	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	12600000	shares
CY2022	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	22.23
CY2023Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	1300000	shares
CY2023Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	35600000	usd
CY2023Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.85
CY2023Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	133100000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	222100000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	236500000	usd
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0527
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2022	ori	Rentalexpenseforleasedpremises Rentalexpenseforleasedpremises	76200000	usd
CY2021	ori	Rentalexpenseforleasedpremises Rentalexpenseforleasedpremises	75600000	usd
CY2020	ori	Rentalexpenseforleasedpremises Rentalexpenseforleasedpremises	73900000	usd
CY2022	us-gaap	Operating Lease Expense OperatingLeaseExpense	64000000.0	usd
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	65000000.0	usd
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	64000000.0	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	58800000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	50600000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	42700000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	30100000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	21400000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	79300000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	283100000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	60900000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	222100000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	61600000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	52800000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	43200000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	35600000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	23400000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	91700000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	308500000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	72000000.0	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	236500000	usd
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
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
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
CY2021Q1	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	1875200000	usd
CY2021Q2	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	2025100000	usd
CY2021Q3	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	2093200000	usd
CY2021Q4	us-gaap	Insurance Services Revenue InsuranceServicesRevenue	2155500000	usd
CY2021Q1	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	479800000	usd
CY2021Q2	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	228600000	usd
CY2021Q3	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	-81000000.0	usd
CY2021Q4	ori	Net Investment Income And Realized Gains Losses NetInvestmentIncomeAndRealizedGainsLosses	564900000	usd
CY2021Q1	us-gaap	Revenues Revenues	2355000000	usd
CY2021Q2	us-gaap	Revenues Revenues	2253700000	usd
CY2021Q3	us-gaap	Revenues Revenues	2012200000	usd
CY2021Q4	us-gaap	Revenues Revenues	2720500000	usd
CY2021Q1	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1724400000	usd
CY2021Q2	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1857700000	usd
CY2021Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1906200000	usd
CY2021Q4	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	1931000000	usd
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	502100000	usd
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	316400000	usd
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	88700000	usd
CY2021Q4	us-gaap	Net Income Loss NetIncomeLoss	627000000.0	usd
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.68
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.06
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.29
CY2021Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.07
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.68
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.05
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.29
CY2021Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.06
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	298753132	shares
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	299934621	shares
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	301577493	shares
CY2021Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	302589671	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	299693514	shares
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	302328012	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	303539358	shares
CY2021Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	304351209	shares
CY2022Q4	ori	Number Of Major Segments NumberOfMajorSegments	3	segment
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	14200000	usd
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	14200000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2022	us-gaap	Revenues Revenues	8083700000	usd
CY2021	us-gaap	Revenues Revenues	9341600000	usd
CY2020	us-gaap	Revenues Revenues	7166000000	usd
CY2022	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	62200000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2021	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6900000	usd
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	14200000	usd
CY2020	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	14200000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2022	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-263400000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2021	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	751100000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2020	ori	Unrealizedfromchangesinfairvalueofequitysecurities Unrealizedfromchangesinfairvalueofequitysecurities	-156200000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-201100000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	758000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	-142000000.0	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
CY2020	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	688400000	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
CY2020	ori	Income Taxes Credits On Realized Investment Gains Losses IncomeTaxesCreditsOnRealizedInvestmentGainsLosses	-29800000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	170900000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	387700000	usd
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	129700000	usd
CY2022Q4	us-gaap	Assets Assets	25159400000	usd
CY2021Q4	us-gaap	Assets Assets	24981800000	usd
CY2022	dei	Auditor Name AuditorName	KPMG LLP
CY2022	dei	Auditor Location AuditorLocation	Chicago, Illinois
CY2022	dei	Auditor Firm AuditorFirmId	185
CY2022Q4	us-gaap	Investment Owned At Cost InvestmentOwnedAtCost	15176600000	usd
CY2022Q4	us-gaap	Investments Investments	15859900000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	296900000	usd
CY2021Q4	us-gaap	Common Stock Value CommonStockValue	307500000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1141800000	usd
CY2022Q4	us-gaap	Supplementary Insurance Information Other Policy Claims And Benefits Payable SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable	191000000.0	usd
CY2022	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	7342100000	usd
CY2021Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1376100000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5319700000	usd
CY2021Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5214000000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-522700000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	78000000.0	usd
CY2022Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	69500000	usd
CY2021Q4	ori	Unallocated Essop Shares UnallocatedEssopShares	82500000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	6166200000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	6893200000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	686400000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	1534300000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	558600000	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
CY2021Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	350400000	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
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	192600000	usd
CY2021	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	7559800000	usd
CY2020Q4	us-gaap	Supplementary Insurance Information Deferred Policy Acquisition Costs SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts	328000000.0	usd
CY2020Q4	us-gaap	Supplementary Insurance Information Liability For Future Policy Benefits Losses Claims And Loss Expense Reserves SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves	10671000000	usd
CY2020Q4	us-gaap	Supplementary Insurance Information Unearned Premiums SupplementaryInsuranceInformationUnearnedPremiums	2397100000	usd
CY2020Q4	us-gaap	Supplementary Insurance Information Other Policy Claims And Benefits Payable SupplementaryInsuranceInformationOtherPolicyClaimsAndBenefitsPayable	195900000	usd
CY2020	us-gaap	Supplementary Insurance Information Premium Revenue SupplementaryInsuranceInformationPremiumRevenue	6345800000	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 Premiums Written SupplementaryInsuranceInformationPremiumsWritten	7685000000	usd
CY2020	us-gaap	Supplementary Insurance Information Net Investment Income SupplementaryInsuranceInformationNetInvestmentIncome	438900000	usd
CY2020	us-gaap	Supplementary Insurance Information Benefits Claims Losses And Settlement Expense SupplementaryInsuranceInformationBenefitsClaimsLossesAndSettlementExpense	2491400000	usd
CY2020	us-gaap	Supplementary Insurance Information Amortization Of Deferred Policy Acquisition Costs SupplementaryInsuranceInformationAmortizationOfDeferredPolicyAcquisitionCosts	501500000	usd
CY2020	us-gaap	Supplementary Insurance Information Other Operating Expense SupplementaryInsuranceInformationOtherOperatingExpense	3484500000	usd
CY2020	us-gaap	Supplementary Insurance Information Premiums Written SupplementaryInsuranceInformationPremiumsWritten	6382100000	usd
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
CY2020	us-gaap	Direct Premiums Earned DirectPremiumsEarned	7993200000	usd
CY2020	us-gaap	Ceded Premiums Earned CededPremiumsEarned	1718900000	usd
CY2020	us-gaap	Assumed Premiums Earned AssumedPremiumsEarned	71500000	usd
CY2020	us-gaap	Premiums Earned Net PremiumsEarnedNet	6345800000	usd
CY2020	us-gaap	Premiums Percentage Assumed To Net PremiumsPercentageAssumedToNet	0.011

Files In Submission

Name	View Source	Status
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0000074260-23-000014-index.html	Edgar Link	pending
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consent_ori.htm	Edgar Link	pending
ex21_2022.htm	Edgar Link	pending
ex24_2022.htm	Edgar Link	pending
ex311ceocertification2022.htm	Edgar Link	pending
ex312cfocertification2022.htm	Edgar Link	pending
ex321ceocertification2022.htm	Edgar Link	pending
ex322cfocertification2022.htm	Edgar Link	pending
exhibit4h.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
ori-20221231.htm	Edgar Link	pending
ori-20221231.xsd	Edgar Link	pending
ori-20221231_g1.jpg	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
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ori-20221231_lab.xml	Edgar Link	unprocessable
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$ORI
OLD REPUBLIC INTERNATIONAL CORP Stock $ori

2023 Q1 Form 10-K Financial Statement

#000007426023000014 Filed on February 24, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ORI OLD REPUBLIC INTERNATIONAL CORP Stock $ori

2023 Q1 Form 10-K Financial Statement

#000007426023000014 Filed on February 24, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ORI
OLD REPUBLIC INTERNATIONAL CORP Stock $ori