$ERIE
ERIE INDEMNITY CO Stock $erie

$erie Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000092262122000013 Filed on February 24, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$635.9M	$2.634B	$609.3M
YoY Change	4.37%	3.84%	2.1%
Cost Of Revenue	$574.1M	$2.316B	$544.2M
YoY Change	5.49%	5.35%	3.07%
Gross Profit	$61.83M	$318.1M	$65.10M
YoY Change	-5.02%	-5.94%	-5.24%
Gross Profit Margin	9.72%	12.08%	10.68%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization		$37.20M
YoY Change		75.47%
% of Gross Profit		11.69%
Operating Expenses	$0.00	$2.316B	$0.00
YoY Change	-168.0%	5.35%	-100.0%
Operating Profit	$61.83M	$318.1M	$65.10M
YoY Change	-5.02%	-5.93%	-114.17%
Interest Expense	$11.29M	$4.132M	$13.40M
YoY Change	-15.78%	465.25%	94.2%
% of Operating Profit	18.25%	1.3%	20.58%
Other Income/Expense, Net	-$3.285M	-$4.893M	-$200.0K
YoY Change	1542.5%	175.2%	-300.0%
Pretax Income	$69.83M	$376.4M	$78.20M
YoY Change	-10.71%	2.14%	3.37%
Income Tax	$14.79M	$78.54M	$15.40M
% Of Pretax Income	21.17%	20.87%	19.69%
Net Earnings	$55.04M	$297.9M	$62.80M
YoY Change	-12.35%	1.55%	5.39%
Net Earnings / Revenue	8.66%	11.31%	10.31%
Basic Earnings Per Share
Diluted Earnings Per Share	$942.4K	$5.100M	$1.075M
COMMON SHARES
Basic Shares Outstanding
Diluted Shares Outstanding

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$222.1M	$222.1M	$178.9M
YoY Change	24.12%	24.08%	-51.58%
Cash & Equivalents	$183.7M	$183.7M	$161.2M
Short-Term Investments	$38.40M	$38.40M	$17.70M
Other Short-Term Assets	$56.21M	$56.21M	$50.00M
YoY Change	12.41%	12.41%	11.11%
Inventory
Prepaid Expenses
Receivables	$479.1M	$485.4M	$494.6M
Other Receivables	$0.00	$0.00	$2.000M
Total Short-Term Assets	$763.7M	$763.7M	$732.3M
YoY Change	4.29%	4.33%	-17.85%
LONG-TERM ASSETS
Property, Plant & Equipment	$374.8M	$374.8M	$280.0M
YoY Change	33.86%	33.86%	14.75%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$995.4M	$995.4M	$1.005B
YoY Change	-0.95%	-0.95%	3653.5%
Other Assets	$49.27M	$49.41M	$40.08M
YoY Change	22.91%	30.03%	-36.02%
Total Long-Term Assets	$1.478B	$1.478B	$1.385B
YoY Change	6.75%	6.74%	23.11%
TOTAL ASSETS
Total Short-Term Assets	$763.7M	$763.7M	$732.3M
Total Long-Term Assets	$1.478B	$1.478B	$1.385B
Total Assets	$2.242B	$2.242B	$2.117B
YoY Change	5.9%	5.91%	5.0%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$138.3M	$138.3M	$140.0M
YoY Change	-1.2%	-1.2%	12.9%
Accrued Expenses	$120.4M	$120.4M	$121.0M
YoY Change	-0.47%	-0.47%	13.08%
Deferred Revenue	$34.94M		$36.92M
YoY Change	-5.37%		2.72%
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$2.098M	$2.098M	$2.031M
YoY Change	3.3%	4.9%	2.63%
Total Short-Term Liabilities	$630.9M	$630.9M	$627.7M
YoY Change	0.51%	0.46%	6.8%
LONG-TERM LIABILITIES
Long-Term Debt	$91.73M	$91.73M	$93.83M
YoY Change	-2.24%	-2.41%	-2.1%
Other Long-Term Liabilities	$14.34M	$177.0M	$9.444M
YoY Change	51.86%	-14.91%	-56.29%
Total Long-Term Liabilities	$106.1M	$268.7M	$103.3M
YoY Change	2.71%	-11.02%	-12.07%
TOTAL LIABILITIES
Total Short-Term Liabilities	$630.9M	$630.9M	$627.7M
Total Long-Term Liabilities	$106.1M	$268.7M	$103.3M
Total Liabilities	$899.6M	$899.6M	$929.1M
YoY Change	-3.17%	-3.17%	5.22%
SHAREHOLDERS EQUITY
Retained Earnings	$2.495B		$2.394B
YoY Change	4.24%		0.68%
Common Stock	$16.50M		$16.49M
YoY Change	0.05%		0.02%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.342B	$1.342B	$1.188B
YoY Change
Total Liabilities & Shareholders Equity	$2.242B	$2.242B	$2.117B
YoY Change	5.9%	5.91%	5.0%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$55.04M	$297.9M	$62.80M
YoY Change	-12.35%	1.55%	5.39%
Depreciation, Depletion And Amortization		$37.20M
YoY Change		75.47%
Cash From Operating Activities	$138.8M	$402.8M	$108.1M
YoY Change	28.36%	17.57%	-14.61%
INVESTING ACTIVITIES
Capital Expenditures	-$110.7M	-$148.8M	-$3.200M
YoY Change	3359.47%	168.11%	-90.48%
Acquisitions
YoY Change
Other Investing Activities	-$31.63M	-$36.69M	-$21.40M
YoY Change	47.8%	-80.45%	-63.54%
Cash From Investing Activities	-$142.3M	-$185.5M	-$24.60M
YoY Change	478.59%	-23.74%	-73.38%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-48.72M	-$194.8M	-138.6M
YoY Change	-64.85%	-29.11%	226.89%
NET CHANGE
Cash From Operating Activities	138.8M	$402.8M	108.1M
Cash From Investing Activities	-142.3M	-$185.5M	-24.60M
Cash From Financing Activities	-48.72M	-$194.8M	-138.6M
Net Change In Cash	-52.29M	$22.46M	-55.10M
YoY Change	-5.09%	-112.8%	571.95%
FREE CASH FLOW
Cash From Operating Activities	$138.8M	$402.8M	$108.1M
Capital Expenditures	-$110.7M	-$148.8M	-$3.200M
Free Cash Flow	$249.5M	$551.6M	$111.3M
YoY Change	124.13%	38.56%	-30.52%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0000922621
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2020	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201613Member
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	0-24000
CY2021	dei	Entity Registrant Name EntityRegistrantName	ERIE INDEMNITY COMPANY
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	PA
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	25-0466020
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	100 Erie Insurance Place,
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	Erie,
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	PA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	16530
CY2021	dei	City Area Code CityAreaCode	814
CY2021	dei	Local Phone Number LocalPhoneNumber	870-2000
CY2021	dei	Security12b Title Security12bTitle	Class A common stock,
CY2021	dei	Trading Symbol TradingSymbol	ERIE
CY2021	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	4900000000	USD
CY2021	dei	Auditor Firm AuditorFirmId	42
CY2021	dei	Auditor Name AuditorName	Ernst & Young LLP
CY2021	dei	Auditor Location AuditorLocation	Cleveland, OH
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CY2020	erie	Net Treasury Stock Value Acquired Held And Reissued NetTreasuryStockValueAcquiredHeldAndReissued	-4000	USD
CY2020	erie	Deferred Compensation Under Rabbi Trust Plans DeferredCompensationUnderRabbiTrustPlans	0	USD
CY2020	erie	Distributions From Rabbi Trust Plans DistributionsFromRabbiTrustPlans	0	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	1188048000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	297860000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	52855000	USD
CY2021	erie	Net Treasury Stock Value Acquired Held And Reissued NetTreasuryStockValueAcquiredHeldAndReissued	-9000	USD
CY2021	erie	Deferred Compensation Under Rabbi Trust Plans DeferredCompensationUnderRabbiTrustPlans	0	USD
CY2021	erie	Distributions From Rabbi Trust Plans DistributionsFromRabbiTrustPlans	0	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1342478000	USD
CY2021	erie	Proceeds From Insurance Agency Management Fees Received ProceedsFromInsuranceAgencyManagementFeesReceived	1982092000	USD
CY2020	erie	Proceeds From Insurance Agency Management Fees Received ProceedsFromInsuranceAgencyManagementFeesReceived	1887537000	USD
CY2019	erie	Proceeds From Insurance Agency Management Fees Received ProceedsFromInsuranceAgencyManagementFeesReceived	1845075000	USD
CY2021	erie	Administrative Services Reimbursements Received AdministrativeServicesReimbursementsReceived	634300000	USD
CY2020	erie	Administrative Services Reimbursements Received AdministrativeServicesReimbursementsReceived	587347000	USD
CY2019	erie	Administrative Services Reimbursements Received AdministrativeServicesReimbursementsReceived	588255000	USD
CY2021	us-gaap	Proceeds From Fees Received ProceedsFromFeesReceived	24014000	USD
CY2020	us-gaap	Proceeds From Fees Received ProceedsFromFeesReceived	25797000	USD
CY2019	us-gaap	Proceeds From Fees Received ProceedsFromFeesReceived	27627000	USD
CY2021	erie	Proceeds From Interest And Dividends Received And Equity Method Investment Dividends Or Distributions ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions	45830000	USD
CY2020	erie	Proceeds From Interest And Dividends Received And Equity Method Investment Dividends Or Distributions ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions	35740000	USD
CY2019	erie	Proceeds From Interest And Dividends Received And Equity Method Investment Dividends Or Distributions ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions	36442000	USD
CY2021	us-gaap	Payments For Commissions PaymentsForCommissions	966285000	USD
CY2020	us-gaap	Payments For Commissions PaymentsForCommissions	928864000	USD
CY2019	us-gaap	Payments For Commissions PaymentsForCommissions	895563000	USD
CY2021	erie	Payments For Agent Bonuses PaymentsForAgentBonuses	123583000	USD
CY2020	erie	Payments For Agent Bonuses PaymentsForAgentBonuses	108227000	USD
CY2019	erie	Payments For Agent Bonuses PaymentsForAgentBonuses	115795000	USD
CY2021	us-gaap	Payments To Employees PaymentsToEmployees	204279000	USD
CY2020	us-gaap	Payments To Employees PaymentsToEmployees	188070000	USD
CY2019	us-gaap	Payments To Employees PaymentsToEmployees	186460000	USD
CY2021	erie	Pension Contributionsand Paymentsfor Other Labor Related Expenses PensionContributionsandPaymentsforOtherLaborRelatedExpenses	32836000	USD
CY2020	erie	Pension Contributionsand Paymentsfor Other Labor Related Expenses PensionContributionsandPaymentsforOtherLaborRelatedExpenses	33098000	USD
CY2019	erie	Pension Contributionsand Paymentsfor Other Labor Related Expenses PensionContributionsandPaymentsforOtherLaborRelatedExpenses	42728000	USD
CY2021	us-gaap	Payments For Other Operating Activities PaymentsForOtherOperatingActivities	235294000	USD
CY2020	us-gaap	Payments For Other Operating Activities PaymentsForOtherOperatingActivities	253545000	USD
CY2019	us-gaap	Payments For Other Operating Activities PaymentsForOtherOperatingActivities	236128000	USD
CY2021	erie	Administrative Services Expenses Paid AdministrativeServicesExpensesPaid	632530000	USD
CY2020	erie	Administrative Services Expenses Paid AdministrativeServicesExpensesPaid	598753000	USD
CY2019	erie	Administrative Services Expenses Paid AdministrativeServicesExpensesPaid	582528000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	84494000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	82576000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	72817000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	4141000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	693000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	853000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	402794000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	342595000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	364527000	USD
CY2021	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	380017000	USD
CY2020	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	396014000	USD
CY2019	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	956818000	USD
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	58191000	USD
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	79518000	USD
CY2019	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	66760000	USD
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1646000	USD
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1142000	USD
CY2019	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1080000	USD
CY2021	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	150153000	USD
CY2020	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	101718000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	687347000	USD
CY2021	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	184820000	USD
CY2020	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	118852000	USD
CY2019	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	303798000	USD
CY2021	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	64118000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	70405000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	16109000	USD
CY2021	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	1076000	USD
CY2020	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	613000	USD
CY2019	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	3722000	USD
CY2021	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	148800000	USD
CY2020	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	55528000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	102039000	USD
CY2021	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	0	USD
CY2020	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	15000	USD
CY2019	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	777000	USD
CY2021	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	6382000	USD
CY2020	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	10098000	USD
CY2019	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	17611000	USD
CY2021	us-gaap	Proceeds From Collection Of Loans Receivable ProceedsFromCollectionOfLoansReceivable	9379000	USD
CY2020	us-gaap	Proceeds From Collection Of Loans Receivable ProceedsFromCollectionOfLoansReceivable	7472000	USD
CY2019	us-gaap	Proceeds From Collection Of Loans Receivable ProceedsFromCollectionOfLoansReceivable	7921000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-185490000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-243225000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-124634000	USD
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	192801000	USD
CY2020	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	272902000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	167651000	USD
CY2021	us-gaap	Proceeds From Repayments Of Secured Debt ProceedsFromRepaymentsOfSecuredDebt	-2041000	USD
CY2020	us-gaap	Proceeds From Repayments Of Secured Debt ProceedsFromRepaymentsOfSecuredDebt	-1967000	USD
CY2019	us-gaap	Proceeds From Repayments Of Secured Debt ProceedsFromRepaymentsOfSecuredDebt	-1920000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-194842000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-274869000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-169571000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	22462000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-175499000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	70322000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	161240000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	336739000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	266417000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	183702000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	161240000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	336739000	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	12802000	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	14214000	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Fixed Assets Acquired1 NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1	6800000	USD
CY2021	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	3447000	USD
CY2020	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	4943000	USD
CY2019	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	35483000	USD
CY2021	erie	Transfer Between Investment Categories TransferBetweenInvestmentCategories	0	USD
CY2020	erie	Transfer Between Investment Categories TransferBetweenInvestmentCategories	13041000	USD
CY2019	erie	Transfer Between Investment Categories TransferBetweenInvestmentCategories	3310000	USD
CY2021	us-gaap	Nature Of Operations NatureOfOperations	Nature of Operations<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Erie Indemnity Company ("Indemnity", "we", "us", "our") is a publicly held Pennsylvania business corporation that has since its incorporation in 1925 served as the attorney-in-fact for the subscribers (policyholders) at the Erie Insurance Exchange ("Exchange"). The Exchange, which also commenced business in 1925, is a Pennsylvania-domiciled reciprocal insurer that writes property and casualty insurance. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our primary function as attorney-in-fact is to perform policy issuance and renewal services on behalf of the subscribers at the Exchange. We also act as attorney-in-fact on behalf of the Exchange with respect to all claims handling and investment management services, as well as the service provider for all claims handling, life insurance, and investment management services for its insurance subsidiaries, collectively referred to as "administrative services". Acting as attorney-in-fact in these two capacities is done in accordance with a subscriber's agreement (a limited power of attorney) executed individually by each subscriber (policyholder), which appoints us as their common attorney-in-fact to transact certain business on their behalf. Pursuant to the subscriber's agreement for acting as attorney-in-fact in these two capacities, we earn a management fee calculated as a percentage of the direct and affiliated assumed premiums written by the Exchange.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The policy issuance and renewal services we provide to the Exchange are related to the sales, underwriting and issuance of policies. The sales related services we provide include agent compensation and certain sales and advertising support services. Agent compensation includes scheduled commissions to agents based upon premiums written as well as additional commissions and bonuses to agents, which are earned by achieving targeted measures. Agent compensation comprised approximately 66% of our 2021 policy issuance and renewal expenses. The underwriting services we provide include underwriting and policy processing and comprised approximately 10% of our 2021 policy issuance and renewal expenses. The remaining services we provide include customer service and administrative support. We also provide information technology services that support all the functions listed above that comprised approximately 11% of our 2021 policy issuance and renewal expenses. Included in these expenses are allocations of costs for departments that support these policy issuance and renewal functions.</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">By virtue of its legal structure as a reciprocal insurer, the Exchange does not have any employees or officers. Therefore, it enters into contractual relationships by and through an attorney-in-fact. Indemnity serves as the attorney-in-fact on behalf of the Exchange with respect to its administrative services. The Exchange's insurance subsidiaries also utilize Indemnity for these services in accordance with the service agreements between each of the subsidiaries and Indemnity. Claims handling services include costs incurred in the claims process, including the adjustment, investigation, defense, recording and payment functions. Life insurance management services include costs incurred in the management and processing of life insurance business. Investment management services are related to investment trading activity, accounting and all other functions attributable to the investment of funds. Included in these expenses are allocations of costs for departments that support these administrative functions. The amounts incurred for these services are reimbursed to Indemnity at cost in accordance with the subscriber's agreement and the service agreements. State insurance regulations require that intercompany service agreements and any material amendments be approved in advance by the state insurance department. </span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our results of operations are tied to the growth and financial condition of the Exchange. If any events occurred that impaired the Exchange’s ability to grow or sustain its financial condition, including but not limited to reduced financial strength ratings, disruption in the independent agency relationships, significant catastrophe losses, or products not meeting customer demands, the Exchange could find it more difficult to retain its existing business and attract new business. A decline in the business of the Exchange almost certainly would have as a consequence a decline in the total premiums paid and a correspondingly adverse effect on the amount of the management fees we receive. We also have an exposure to a concentration of credit risk related to the unsecured receivables due from the Exchange for its management fee and cost reimbursements. See Note 15, "Concentrations of Credit Risk".</span></div><div><span><br/></span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Coronavirus ("COVID-19") pandemic</span></div>In March 2020, the outbreak of the coronavirus ("COVID-19") was declared a global pandemic and pandemic conditions have created an inflationary environment which may impact estimated loss reserves and future premium rates of the Exchange. The uncertainty resulting from COVID-19 and subsequent resulting conditions continues to evolve and the ultimate impact and duration remain uncertain at this time. We are unable to predict the duration or extent of the business disruption or the financial impact given the ongoing development of the pandemic and its impacts on the economy and financial markets.
CY2021	erie	Revenue Performance Obligation Numberof Performance Obligations RevenuePerformanceObligationNumberofPerformanceObligations	2	obligation
CY2021	erie	Revenue Performance Obligation Numberof Performance Obligations RevenuePerformanceObligationNumberofPerformanceObligations	2	obligation
CY2021	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Use of estimates</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2020Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	600000	USD
CY2021	erie	Insurance Agency Management Fee Percent InsuranceAgencyManagementFeePercent	0.25
CY2021	erie	Revenue Performance Obligation Numberof Performance Obligations RevenuePerformanceObligationNumberofPerformanceObligations	2	obligation
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P4Y
CY2021	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%;text-decoration:underline">Reclassification</span></div><div><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain amounts previously reported in the 2020 financial statements have been reclassified for comparative purposes to conform to the current period’s presentation. "Federal income taxes recoverable" is now included in "Prepaid expenses and other current assets" in the Statements of Financial Position.</span></div>
CY2021	erie	Insurance Agency Management Fee Percent InsuranceAgencyManagementFeePercent	0.25
CY2021	erie	Insurance Agency Management Fee Percent InsuranceAgencyManagementFeePercent	0.25
CY2021	erie	Revenue Performance Obligation Numberof Performance Obligations RevenuePerformanceObligationNumberofPerformanceObligations	2	obligation
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1 RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1	P4Y
CY2021	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	36900000	USD
CY2020	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	35900000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	33900000	USD
CY2021	erie	Revenue Performance Obligation Numberof Performance Obligations RevenuePerformanceObligationNumberofPerformanceObligations	2	obligation
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	38061000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	38396000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	409379000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	414588000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	195937000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	197733000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	294902000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	295368000	USD
CY2021Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	938279000	USD
CY2021Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	946085000	USD
CY2021Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1000000	USD
CY2020Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1100000	USD
CY2021Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	100000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	200000	USD
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	31701000	USD
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-602000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	660000	USD
CY2021	erie	Interest And Dividend Income Operating And Income Loss From Equity Method Investments InterestAndDividendIncomeOperatingAndIncomeLossFromEquityMethodInvestments	63426000	USD
CY2020	erie	Interest And Dividend Income Operating And Income Loss From Equity Method Investments InterestAndDividendIncomeOperatingAndIncomeLossFromEquityMethodInvestments	31214000	USD
CY2019	erie	Interest And Dividend Income Operating And Income Loss From Equity Method Investments InterestAndDividendIncomeOperatingAndIncomeLossFromEquityMethodInvestments	35120000	USD
CY2021	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	1249000	USD
CY2020	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	1461000	USD
CY2019	us-gaap	Investment Income Investment Expense InvestmentIncomeInvestmentExpense	1061000	USD
CY2021	erie	Net Investment Income And Income Loss From Equity Method Investments NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments	62177000	USD
CY2020	erie	Net Investment Income And Income Loss From Equity Method Investments NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments	29753000	USD
CY2019	erie	Net Investment Income And Income Loss From Equity Method Investments NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments	34059000	USD
CY2021	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	4946000	USD
CY2020	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	6392000	USD
CY2019	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	6103000	USD
CY2021	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-186000	USD
CY2020	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	5056000	USD
CY2019	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	1484000	USD
CY2021	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-76000	USD
CY2020	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	-469000	USD
CY2019	us-gaap	Equity Securities Fv Ni Realized Gain Loss EquitySecuritiesFvNiRealizedGainLoss	360000	USD
CY2021	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	-110000	USD
CY2020	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	5525000	USD
CY2019	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	1124000	USD
CY2021	erie	Debt Securities Available For Sale Sell Before Recovery DebtSecuritiesAvailableForSaleSellBeforeRecovery	-10000	USD
CY2020	erie	Debt Securities Available For Sale Sell Before Recovery DebtSecuritiesAvailableForSaleSellBeforeRecovery	-2274000	USD
CY2019	erie	Debt Securities Available For Sale Sell Before Recovery DebtSecuritiesAvailableForSaleSellBeforeRecovery	-195000	USD
CY2021	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	67000	USD
CY2020	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	-707000	USD
CY2019	us-gaap	Debt Securities Available For Sale Change In Present Value Expense Reversal DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal	0	USD
CY2021	erie	Available For Sale Debt Securities Impairment Loss Recovery AvailableForSaleDebtSecuritiesImpairmentLossRecovery	57000	USD
CY2020	erie	Available For Sale Debt Securities Impairment Loss Recovery AvailableForSaleDebtSecuritiesImpairmentLossRecovery	-2981000	USD
CY2019	erie	Available For Sale Debt Securities Impairment Loss Recovery AvailableForSaleDebtSecuritiesImpairmentLossRecovery	-195000	USD
CY2021	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	-152000	USD
CY2020	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	297000	USD
CY2019	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	0	USD
CY2021	erie	Available For Sale Debt Securities And Financing Receivables Impairment Loss Recoveries AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveries	209000	USD
CY2020	erie	Available For Sale Debt Securities And Financing Receivables Impairment Loss Recoveries AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveries	-3278000	USD
CY2019	erie	Available For Sale Debt Securities And Financing Receivables Impairment Loss Recoveries AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveries	-195000	USD
CY2021Q4	erie	Finite Lived Intangible Assets And Property Plant And Equipment Gross FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentGross	571110000	USD
CY2020Q4	erie	Finite Lived Intangible Assets And Property Plant And Equipment Gross FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentGross	424485000	USD
CY2021Q4	erie	Accumulated Depreciation Depletionand Amortization Property Plantand Equipmentand Finite Lived Intangible Assets AccumulatedDepreciationDepletionandAmortizationPropertyPlantandEquipmentandFiniteLivedIntangibleAssets	196308000	USD
CY2020Q4	erie	Accumulated Depreciation Depletionand Amortization Property Plantand Equipmentand Finite Lived Intangible Assets AccumulatedDepreciationDepletionandAmortizationPropertyPlantandEquipmentandFiniteLivedIntangibleAssets	159144000	USD
CY2021Q4	erie	Finite Lived Intangible Assets And Property Plant And Equipment Net FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentNet	374802000	USD
CY2020Q4	erie	Finite Lived Intangible Assets And Property Plant And Equipment Net FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentNet	265341000	USD
CY2020	us-gaap	Interest Costs Incurred InterestCostsIncurred	3500000	USD
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	3400000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37200000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	21200000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	16800000	USD
CY2021	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	1428000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	1343000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	1394000	USD
CY2021	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-16106000	USD
CY2021	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	53041000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	43492000	USD
CY2019	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	33854000	USD
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	36824000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	37578000	USD
CY2019	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	39306000	USD
CY2021	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	50275000	USD
CY2020	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	49411000	USD
CY2019	us-gaap	Defined Benefit Plan Expected Return On Plan Assets DefinedBenefitPlanExpectedReturnOnPlanAssets	47484000	USD
CY2020	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-12125000	USD
CY2019	us-gaap	Defined Benefit Plan Amortization Of Gains Losses DefinedBenefitPlanAmortizationOfGainsLosses	-5113000	USD
CY2021	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	57124000	USD
CY2020	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	45127000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-132411000	USD
CY2019	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	32183000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-165098000	USD
CY2021Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	2028000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Current DefinedBenefitPensionPlanLiabilitiesCurrent	752000	USD
CY2021Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	130383000	USD
CY2020Q4	us-gaap	Defined Benefit Pension Plan Liabilities Noncurrent DefinedBenefitPensionPlanLiabilitiesNoncurrent	164346000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-132411000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Amounts Recognized In Balance Sheet DefinedBenefitPlanAmountsRecognizedInBalanceSheet	-165098000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1246159000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1054467000	USD
CY2021	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	53041000	USD
CY2020	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	43492000	USD
CY2021	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	36824000	USD
CY2020	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	37578000	USD
CY2021	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	4059000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	0	USD
CY2021	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	38400000	USD
CY2020	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-134470000	USD
CY2021	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	29029000	USD
CY2020	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	23848000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1272654000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	1246159000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	1037820000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	1006884000	USD
CY2021	us-gaap	Defined Benefit Plan Benefit Obligation Period Increase Decrease DefinedBenefitPlanBenefitObligationPeriodIncreaseDecrease	26500000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0316
CY2020Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0296
CY2021Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	1272654000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Projected Benefit Obligation DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation	1246159000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	1140243000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Pension Plan With Projected Benefit Obligation In Excess Of Plan Assets Plan Assets DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets	1081061000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	1081061000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	907625000	USD
CY2021	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	86966000	USD
CY2020	us-gaap	Defined Benefit Plan Actual Return On Plan Assets DefinedBenefitPlanActualReturnOnPlanAssets	195713000	USD
CY2021	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1245000	USD
CY2020	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	1571000	USD
CY2021	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	29029000	USD
CY2020	us-gaap	Defined Benefit Plan Plan Assets Benefits Paid DefinedBenefitPlanPlanAssetsBenefitsPaid	23848000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	1140243000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	1081061000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-27524000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	-118721000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	12201000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	9570000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	39725000	USD
CY2020Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	128291000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	75091000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	11832000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-16106000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-12125000	USD
CY2021	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	1428000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	1343000	USD
CY2021	erie	Other Comprehensive Income Defined Benefit Plans Amendments During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansAmendmentsDuringPeriodBeforeTax	4059000	USD
CY2020	erie	Other Comprehensive Income Defined Benefit Plans Amendments During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlansAmendmentsDuringPeriodBeforeTax	0	USD
CY2021	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-88566000	USD
CY2020	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-25300000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	29730000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	33975000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	36025000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	39813000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	42218000	USD
CY2021Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	265680000	USD
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	16100000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	15800000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	14900000	USD
CY2020Q4	erie	Defined Contribution Plan Number Of Equity Securities Issued By Employer And Related Parties Included In Plan Assets DefinedContributionPlanNumberOfEquitySecuritiesIssuedByEmployerAndRelatedPartiesIncludedInPlanAssets	200000	shares
CY2021Q4	erie	Defined Contribution Plan Number Of Equity Securities Issued By Employer And Related Parties Included In Plan Assets DefinedContributionPlanNumberOfEquitySecuritiesIssuedByEmployerAndRelatedPartiesIncludedInPlanAssets	200000	shares
CY2021	erie	Numberof Executive Incentive Plans NumberofExecutiveIncentivePlans	2	plan
CY2021	erie	Numberof Executive Deferred Compensation Plans NumberofExecutiveDeferredCompensationPlans	2	plan
CY2021	erie	Numberof Director Deferred Compensation Plans NumberofDirectorDeferredCompensationPlans	2	plan
CY2020Q4	erie	Accrued Bonuses And Deferred Compensation Liability Current And Noncurrent AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent	32223000	USD
CY2019Q4	erie	Accrued Bonuses And Deferred Compensation Liability Current And Noncurrent AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent	24616000	USD
CY2018Q4	erie	Accrued Bonuses And Deferred Compensation Liability Current And Noncurrent AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent	26182000	USD
CY2021	erie	Incentive Plans And Deferred Compensation Total Awards And Earnings IncentivePlansAndDeferredCompensationTotalAwardsAndEarnings	13282000	USD
CY2020	erie	Incentive Plans And Deferred Compensation Total Awards And Earnings IncentivePlansAndDeferredCompensationTotalAwardsAndEarnings	20962000	USD
CY2019	erie	Incentive Plans And Deferred Compensation Total Awards And Earnings IncentivePlansAndDeferredCompensationTotalAwardsAndEarnings	12712000	USD
CY2021	erie	Incentive Plan Compensation Total Liabilities Paid IncentivePlanCompensationTotalLiabilitiesPaid	16647000	USD
CY2020	erie	Incentive Plan Compensation Total Liabilities Paid IncentivePlanCompensationTotalLiabilitiesPaid	10121000	USD
CY2019	erie	Incentive Plan Compensation Total Liabilities Paid IncentivePlanCompensationTotalLiabilitiesPaid	12852000	USD
CY2021Q4	erie	Accrued Bonuses And Deferred Compensation Liability Current And Noncurrent AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent	27208000	USD
CY2020Q4	erie	Accrued Bonuses And Deferred Compensation Liability Current And Noncurrent AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent	32223000	USD
CY2019Q4	erie	Accrued Bonuses And Deferred Compensation Liability Current And Noncurrent AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent	24616000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	80398000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	80373000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	76535000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1854000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5162000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3349000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	78544000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	75211000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79884000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	79045000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	77388000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	83308000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	0	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	0	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	123000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-3088000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-501000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2177000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-213000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	78544000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	75211000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	79884000	USD
CY2021Q4	erie	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	21545000	USD
CY2020Q4	erie	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions And Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits	29065000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	15273000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther	14544000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	3963000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Deferred Income DeferredTaxAssetsDeferredIncome	3872000	USD
CY2021Q4	erie	Deferred Tax Assets Net Allowancefor Premium Cancellations DeferredTaxAssetsNetAllowanceforPremiumCancellations	3330000	USD
CY2020Q4	erie	Deferred Tax Assets Net Allowancefor Premium Cancellations DeferredTaxAssetsNetAllowanceforPremiumCancellations	3515000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	0	USD
CY2020Q4	us-gaap	Deferred Tax Assets Unrealized Losses On Availablefor Sale Securities Gross DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross	1083000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	3484000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2692000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	47595000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	54771000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	35204000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	29978000	USD
CY2021Q4	erie	Deferred Tax Liabilities Unrealized Gains On Investments Including Equity Method Investments DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsIncludingEquityMethodInvestments	8713000	USD
CY2020Q4	erie	Deferred Tax Liabilities Unrealized Gains On Investments Including Equity Method Investments DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsIncludingEquityMethodInvestments	7540000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	2458000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	3800000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1075000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1112000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	47450000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	42430000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	145000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	12341000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2021Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3088000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4631000	USD
CY2021	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2020	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	7719000	USD
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	-3100000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	900000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements EffectiveIncomeTaxRateReconciliationTaxSettlements	-0.010
CY2021Q4	erie	Number Of Classes Of Common Stock NumberOfClassesOfCommonStock	2	classOfStock
CY2021	erie	Insurance Holding Company System Minimum Affiliates InsuranceHoldingCompanySystemMinimumAffiliates	2	affiliate
CY2021	erie	Insurance Holding Company System Minimum Affiliate Insurers InsuranceHoldingCompanySystemMinimumAffiliateInsurers	1	insurer
CY2021Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	479100000	USD
CY2020Q4	us-gaap	Accounts Receivable Related Parties Current AccountsReceivableRelatedPartiesCurrent	494600000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	500000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	600000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	297860000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	293304000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	316821000	USD
CY2021	erie	Depreciation Depletionand Amortizationand Gain Losson Disposition DepreciationDepletionandAmortizationandGainLossonDisposition	37210000	USD
CY2020	erie	Depreciation Depletionand Amortizationand Gain Losson Disposition DepreciationDepletionandAmortizationandGainLossonDisposition	21195000	USD
CY2019	erie	Depreciation Depletionand Amortizationand Gain Losson Disposition DepreciationDepletionandAmortizationandGainLossonDisposition	16813000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1854000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-5162000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3349000	USD
CY2021	erie	Lease Amortization Expense LeaseAmortizationExpense	11887000	USD
CY2020	erie	Lease Amortization Expense LeaseAmortizationExpense	13108000	USD
CY2019	erie	Lease Amortization Expense LeaseAmortizationExpense	13959000	USD
CY2021	erie	Realized Investment Gains Losses And Impairment Of Investments RealizedInvestmentGainsLossesAndImpairmentOfInvestments	2307000	USD
CY2020	erie	Realized Investment Gains Losses And Impairment Of Investments RealizedInvestmentGainsLossesAndImpairmentOfInvestments	3114000	USD
CY2019	erie	Realized Investment Gains Losses And Impairment Of Investments RealizedInvestmentGainsLossesAndImpairmentOfInvestments	5908000	USD
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	13000	USD
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	15000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-75000	USD
CY2021	erie	Accretion Amortization Of Discounts And Premiums Investments And Income Loss From Equity Method Investments AccretionAmortizationOfDiscountsAndPremiumsInvestmentsAndIncomeLossFromEquityMethodInvestments	25944000	USD
CY2020	erie	Accretion Amortization Of Discounts And Premiums Investments And Income Loss From Equity Method Investments AccretionAmortizationOfDiscountsAndPremiumsInvestmentsAndIncomeLossFromEquityMethodInvestments	-5878000	USD
CY2019	erie	Accretion Amortization Of Discounts And Premiums Investments And Income Loss From Equity Method Investments AccretionAmortizationOfDiscountsAndPremiumsInvestmentsAndIncomeLossFromEquityMethodInvestments	-543000	USD
CY2021	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-5006000	USD
CY2020	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	7611000	USD
CY2019	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	-1541000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	-15514000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	26548000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable Related Parties IncreaseDecreaseInAccountsReceivableRelatedParties	19505000	USD
CY2021	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	157000	USD
CY2020	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	713000	USD
CY2019	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	170000	USD
CY2021	erie	Increase Decrease In Prepaid Pension IncreaseDecreaseInPrepaidPension	-52755000	USD
CY2020	erie	Increase Decrease In Prepaid Pension IncreaseDecreaseInPrepaidPension	-41227000	USD
CY2019	erie	Increase Decrease In Prepaid Pension IncreaseDecreaseInPrepaidPension	-28798000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-12161000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4771000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1707000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-4823000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-14307000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-3627000	USD
CY2021	us-gaap	Increase Decrease In Reserve For Commissions Expense And Taxes IncreaseDecreaseInReserveForCommissionsExpenseAndTaxes	-8408000	USD
CY2020	us-gaap	Increase Decrease In Reserve For Commissions Expense And Taxes IncreaseDecreaseInReserveForCommissionsExpenseAndTaxes	625000	USD
CY2019	us-gaap	Increase Decrease In Reserve For Commissions Expense And Taxes IncreaseDecreaseInReserveForCommissionsExpenseAndTaxes	-21390000	USD
CY2021	erie	Increase Decrease In Accrued Agent Bonuses IncreaseDecreaseInAccruedAgentBonuses	10279000	USD
CY2020	erie	Increase Decrease In Accrued Agent Bonuses IncreaseDecreaseInAccruedAgentBonuses	14105000	USD
CY2019	erie	Increase Decrease In Accrued Agent Bonuses IncreaseDecreaseInAccruedAgentBonuses	-7409000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-3176000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	1422000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	2646000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	402794000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	342595000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	364527000	USD

Files In Submission

Name	View Source	Status
0000922621-22-000013-index-headers.html	Edgar Link	pending
0000922621-22-000013-index.html	Edgar Link	pending
0000922621-22-000013.txt	Edgar Link	pending
0000922621-22-000013-xbrl.zip	Edgar Link	pending
erie-20211231.htm	Edgar Link	pending
erie-20211231.xsd	Edgar Link	pending
erie-20211231_cal.xml	Edgar Link	unprocessable
erie-20211231_def.xml	Edgar Link	unprocessable
erie-20211231_g1.jpg	Edgar Link	pending
erie-20211231_htm.xml	Edgar Link	completed
erie-20211231_lab.xml	Edgar Link	unprocessable
erie-20211231_pre.xml	Edgar Link	unprocessable
ex-1021612312021.htm	Edgar Link	pending
ex-1021712312021.htm	Edgar Link	pending
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ex-31112312021.htm	Edgar Link	pending
ex-31212312021.htm	Edgar Link	pending
ex-3212312021.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$ERIE
ERIE INDEMNITY CO Stock $erie

2021 Q4 Form 10-K Financial Statement

#000092262122000013 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ERIE ERIE INDEMNITY CO Stock $erie

2021 Q4 Form 10-K Financial Statement

#000092262122000013 Filed on February 24, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ERIE
ERIE INDEMNITY CO Stock $erie