$ONB
Old National Bancorp Stock $onb

$onb Overview Financials Valuation SEC Filings Company Website

2020 Q1 Form 10-Q Financial Statement

#000070717920000076 Filed on April 29, 2020

Income Statement

Concept	2020 Q1	2019 Q1
Revenue	$168.0M	$178.9M
YoY Change	-6.1%	468.91%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$8.600M	$6.400M
YoY Change	34.38%	10.34%
% of Gross Profit
Operating Expenses
YoY Change
Operating Profit
YoY Change
Interest Expense	$24.23M	$31.87M
YoY Change	-23.98%	66.56%
% of Operating Profit
Other Income/Expense, Net
YoY Change
Pretax Income	$25.58M	$69.38M
YoY Change	-63.13%	31.05%
Income Tax	$2.939M	$13.10M
% Of Pretax Income	11.49%	18.89%
Net Earnings	$22.64M	$56.28M
YoY Change	-59.77%	17.28%
Net Earnings / Revenue	13.48%	31.45%
Basic Earnings Per Share	$0.13	$0.32
Diluted Earnings Per Share	$0.13	$0.32
COMMON SHARES
Basic Shares Outstanding	167.7M shares	174.7M shares
Diluted Shares Outstanding	168.4M shares	175.4M shares

Balance Sheet

Concept	2020 Q1	2019 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$343.2M	$323.1M
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	$462.4M	$490.2M
YoY Change	-5.68%	8.07%
Goodwill	$1.037B	$1.036B
YoY Change	0.07%	25.03%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$18.00M	$64.00M
YoY Change	-71.88%	-32.63%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$20.74B	$20.08B
YoY Change	3.27%	14.79%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$332.0M	$253.0M
YoY Change	31.23%	83.33%
Deferred Revenue
YoY Change
Short-Term Debt	$879.0M	$668.0M
YoY Change	31.59%	45.85%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$332.0M	$253.0M
YoY Change	31.23%	83.33%
LONG-TERM LIABILITIES
Long-Term Debt	$236.0M	$252.0M
YoY Change	-6.35%	1.2%
Other Long-Term Liabilities	$65.00M	$28.00M
YoY Change	132.14%	33.33%
Total Long-Term Liabilities	$301.0M	$280.0M
YoY Change	7.5%	3.7%
TOTAL LIABILITIES
Total Short-Term Liabilities	$332.0M	$253.0M
Total Long-Term Liabilities	$301.0M	$280.0M
Total Liabilities	$17.92B	$17.33B
YoY Change	3.38%	13.16%
SHAREHOLDERS EQUITY
Retained Earnings	$682.2M	$567.3M
YoY Change	20.25%	26.72%
Common Stock	$2.035B	$2.182B
YoY Change	-6.72%	21.7%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$2.823B	$2.752B
YoY Change
Total Liabilities & Shareholders Equity	$20.74B	$20.08B
YoY Change	3.27%	14.79%

Cashflow Statement

Concept	2020 Q1	2019 Q1
OPERATING ACTIVITIES
Net Income	$22.64M	$56.28M
YoY Change	-59.77%	17.28%
Depreciation, Depletion And Amortization	$8.600M	$6.400M
YoY Change	34.38%	10.34%
Cash From Operating Activities	-$21.13M	$33.01M
YoY Change	-164.02%	-35.78%
INVESTING ACTIVITIES
Capital Expenditures	$7.938M	$11.68M
YoY Change	-32.06%	21.8%
Acquisitions
YoY Change
Other Investing Activities	-$44.10M	-$183.7M
YoY Change	-75.99%	2726.15%
Cash From Investing Activities	-$52.08M	-$195.3M
YoY Change	-73.34%	1113.76%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$81.67M	$27.17M
YoY Change	200.63%	2589.8%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$140.1M	$168.3M
YoY Change	-16.77%	-454.3%
NET CHANGE
Cash From Operating Activities	-$21.13M	$33.01M
Cash From Investing Activities	-$52.08M	-$195.3M
Cash From Financing Activities	$140.1M	$168.3M
Net Change In Cash	$66.84M	$5.951M
YoY Change	1023.17%	-148.81%
FREE CASH FLOW
Cash From Operating Activities	-$21.13M	$33.01M
Capital Expenditures	$7.938M	$11.68M
Free Cash Flow	-$29.07M	$21.33M
YoY Change	-236.31%	-48.99%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2020Q1	dei	Amendment Flag AmendmentFlag	false
CY2020Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
CY2020Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2020Q1	dei	Entity Registrant Name EntityRegistrantName	Old National Bancorp /IN/
CY2020Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000707179
CY2020Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2020Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	IN
CY2020Q1	dei	Document Type DocumentType	10-Q
CY2020Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2020Q1	dei	Document Period End Date DocumentPeriodEndDate	2020-03-31
CY2020Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2020Q1	dei	Entity File Number EntityFileNumber	1-15817
CY2020Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	35-1539838
CY2020Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	One Main Street
CY2020Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	47708
CY2020Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Evansville,
CY2020Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	IN
CY2020Q1	dei	City Area Code CityAreaCode	(800)
CY2020Q1	dei	Local Phone Number LocalPhoneNumber	731-2265
CY2020Q1	dei	Security12b Title Security12bTitle	Common Stock, No Par Value
CY2020Q1	dei	Trading Symbol TradingSymbol	ONB
CY2020Q1	dei	Security Exchange Name SecurityExchangeName	NASDAQ
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CY2020Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2020Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2020Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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CY2019Q1	us-gaap	Noninterest Expense NoninterestExpense	123041000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	25579000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	69380000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2939000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13104000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	22640000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56276000	USD
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	167748000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174734000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	168404000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175368000	shares
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.14
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	22640000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56276000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	103954000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	62265000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	5174000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-103000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	22411000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	14578000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	76369000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	47790000	USD
CY2020Q1	us-gaap	Other Comprehensive Loss Held To Maturity Security Adjustment From Aoci For Accretion Of Noncredit Portion Of Otti Before Tax OtherComprehensiveLossHeldToMaturitySecurityAdjustmentFromAociForAccretionOfNoncreditPortionOfOttiBeforeTax	0	USD
CY2019Q1	us-gaap	Other Comprehensive Loss Held To Maturity Security Adjustment From Aoci For Accretion Of Noncredit Portion Of Otti Before Tax OtherComprehensiveLossHeldToMaturitySecurityAdjustmentFromAociForAccretionOfNoncreditPortionOfOttiBeforeTax	457000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	0	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	106000	USD
CY2020Q1	onb	Other Comprehensive Income Loss Held To Maturity Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossHeldToMaturitySecuritiesAdjustmentNetOfTax	0	USD
CY2019Q1	onb	Other Comprehensive Income Loss Held To Maturity Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossHeldToMaturitySecuritiesAdjustmentNetOfTax	351000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	7803000	USD
CY2019Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	103846000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-392000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	431000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax	385000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1811000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-191000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	5561000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-586000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-27000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-20000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-7000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-5000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	20000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	15000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	81950000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	47570000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	104590000	USD
CY2020Q1	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-5146000	USD
CY2019Q1	us-gaap	Investment Income Net Amortization Of Discount And Premium InvestmentIncomeNetAmortizationOfDiscountAndPremium	-3154000	USD
CY2020Q1	onb	Net Accretion Of Premiums And Discounts From Acquired Loans NetAccretionOfPremiumsAndDiscountsFromAcquiredLoans	6649000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2689570000	USD
CY2018Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	6322000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	2695892000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56276000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	47570000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.13
CY2019Q1	us-gaap	Dividends Common Stock DividendsCommonStock	22812000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	130000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27297000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1800000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	313000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	2751872000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	2852453000	USD
CY2019Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-31150000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	2821303000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	22640000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	81950000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.14
CY2020Q1	us-gaap	Dividends Common Stock DividendsCommonStock	23535000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	151000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	81822000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2748000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	0	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	2823435000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	22640000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56276000	USD
CY2020Q1	us-gaap	Depreciation Depreciation	8594000	USD
CY2019Q1	us-gaap	Depreciation Depreciation	6443000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3776000	USD
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4472000	USD
CY2020Q1	us-gaap	Income Loss From Affordable Housing Projects Equity Method Investments IncomeLossFromAffordableHousingProjectsEquityMethodInvestments	-5515000	USD
CY2019Q1	us-gaap	Income Loss From Affordable Housing Projects Equity Method Investments IncomeLossFromAffordableHousingProjectsEquityMethodInvestments	-260000	USD
CY2019Q1	onb	Net Accretion Of Premiums And Discounts From Acquired Loans NetAccretionOfPremiumsAndDiscountsFromAcquiredLoans	8668000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2748000	USD
CY2019Q1	us-gaap	Share Based Compensation ShareBasedCompensation	1800000	USD
CY2020Q1	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	818000	USD
CY2019Q1	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1013000	USD
CY2020Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	16950000	USD
CY2019Q1	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1043000	USD
CY2020Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	5174000	USD
CY2019Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-103000	USD
CY2020Q1	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	-11826000	USD
CY2019Q1	us-gaap	Gains Losses On Sales Of Assets GainsLossesOnSalesOfAssets	1564000	USD
CY2020Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3080000	USD
CY2019Q1	us-gaap	Bank Owned Life Insurance Income BankOwnedLifeInsuranceIncome	3188000	USD
CY2020Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	223961000	USD
CY2019Q1	us-gaap	Payments For Origination Of Mortgage Loans Held For Sale PaymentsForOriginationOfMortgageLoansHeldForSale	94632000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	219626000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Mortgage Loans Held For Sale ProceedsFromSaleOfMortgageLoansHeldForSale	97010000	USD
CY2020Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-7313000	USD
CY2019Q1	us-gaap	Increase Decrease In Accrued Interest Receivable Net IncreaseDecreaseInAccruedInterestReceivableNet	-3184000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	87826000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-13618000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2242000	USD
CY2019Q1	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-45288000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-21132000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	33010000	USD
CY2020Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	446819000	USD
CY2019Q1	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	530677000	USD
CY2020Q1	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	10025000	USD
CY2019Q1	us-gaap	Payments To Acquire Restricted Investments PaymentsToAcquireRestrictedInvestments	14439000	USD
CY2020Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	436742000	USD
CY2019Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	145356000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	236410000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8681000	USD
CY2020Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	0	USD
CY2019Q1	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	21689000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	11000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Restricted Investments ProceedsFromSaleOfRestrictedInvestments	19000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	133000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Trading Securities Heldforinvestment ProceedsFromSaleOfTradingSecuritiesHeldforinvestment	130000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	262497000	USD
CY2019Q1	us-gaap	Payments For Proceeds From Loans And Leases PaymentsForProceedsFromLoansAndLeases	-182638000	USD
CY2020Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	1899000	USD
CY2019Q1	us-gaap	Proceeds From Life Insurance Policies ProceedsFromLifeInsurancePolicies	2861000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	84000	USD
CY2020Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7938000	USD
CY2019Q1	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	11684000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-52084000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-195342000	USD
CY2020Q1	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	-248035000	USD
CY2019Q1	us-gaap	Net Change Interest Bearing Deposits Domestic NetChangeInterestBearingDepositsDomestic	79321000	USD
CY2020Q1	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-210356000	USD
CY2019Q1	us-gaap	Increase Decrease In Federal Funds Purchased IncreaseDecreaseInFederalFundsPurchased	-54895000	USD
CY2020Q1	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-9715000	USD
CY2019Q1	us-gaap	Proceeds From Payments For In Securities Sold Under Agreements To Repurchase ProceedsFromPaymentsForInSecuritiesSoldUnderAgreementsToRepurchase	-19814000	USD
CY2020Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	-7339000	USD
CY2019Q1	us-gaap	Proceeds From Repayments Of Other Debt ProceedsFromRepaymentsOfOtherDebt	3650000	USD
CY2020Q1	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	200005000	USD
CY2019Q1	us-gaap	Repayments Of Federal Home Loan Bank Borrowings RepaymentsOfFederalHomeLoanBankBorrowings	325070000	USD
CY2020Q1	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	500000000	USD
CY2019Q1	us-gaap	Proceeds From Federal Home Loan Bank Borrowings ProceedsFromFederalHomeLoanBankBorrowings	425000000	USD
CY2020Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	23535000	USD
CY2019Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	22812000	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	81822000	USD
CY2019Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	27297000	USD
CY2020Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2019Q1	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	280000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	151000	USD
CY2019Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	130000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	140056000	USD
CY2019Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	168283000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	66840000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	5951000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	276337000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	317165000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	343177000	USD
CY2019Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	323116000	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	26387000	USD
CY2019Q1	us-gaap	Interest Paid Net InterestPaidNet	33779000	USD
CY2020Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1212000	USD
CY2019Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	150000	USD
CY2020Q1	onb	Investment Securities Purchased But Not Settled InvestmentSecuritiesPurchasedButNotSettled	102459000	USD
CY2019Q1	onb	Investment Securities Purchased But Not Settled InvestmentSecuritiesPurchasedButNotSettled	10912000	USD
CY2020Q1	onb	Net Reduction In Operating Lease Right Of Use Asset Modifications NetReductionInOperatingLeaseRightOfUseAssetModifications	310000	USD
CY2019Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	117739000	USD
CY2020Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	0	USD
CY2019Q1	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	7542000	USD
CY2020Q1	onb	Financing Receivable Number Of Distinct Loan Portfolios FinancingReceivableNumberOfDistinctLoanPortfolios	7	portfolio
CY2020Q1	onb	Financing Receivable Number Of Distinct Loan Portfolios FinancingReceivableNumberOfDistinctLoanPortfolios	7	portfolio
CY2020Q1	onb	Current Expected Credit Losses Initial Loss Forecast Term CurrentExpectedCreditLossesInitialLossForecastTerm	P1Y
CY2020Q1	onb	Current Expected Credit Losses Reversion Period Term CurrentExpectedCreditLossesReversionPeriodTerm	P2Y
CY2020Q1	us-gaap	Financing Receivable Change In Present Value Interest Income FinancingReceivableChangeInPresentValueInterestIncome	11800000	USD
CY2020Q1	onb	Financing Receivable Number Of Loan Portfolios FinancingReceivableNumberOfLoanPortfolios	4	portfolio
CY2020Q1	onb	Financing Receivable Number Of Loan Segments FinancingReceivableNumberOfLoanSegments	7	segment
CY2020Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	12117524000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54619000	USD
CY2020Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	12117524000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54619000	USD
CY2020Q1	us-gaap	Notes Receivable Net NotesReceivableNet	12062905000	USD
CY2020Q1	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	29705000	USD
CY2020Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2656000	USD
CY2020Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	682185000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	22640000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56276000	USD
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	167748000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174734000	shares
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.13
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	22640000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	56276000	USD
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	167748000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174734000	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	616000	shares
CY2019Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	582000	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	40000	shares
CY2019Q1	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	52000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	168404000	shares
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	175368000	shares
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.13
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.32
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5189363000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	183360000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	12698000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	5360025000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5313209000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	93542000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	21660000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2019Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	5385091000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	236410000	USD
CY2019Q1	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	8681000	USD
CY2020Q1	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	400181000	USD
CY2019Q1	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	32366000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	5595000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale Realized Gain DebtSecuritiesAvailableForSaleRealizedGain	71000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	409000	USD
CY2019Q1	us-gaap	Debt Securities Available For Sale Realized Loss DebtSecuritiesAvailableForSaleRealizedLoss	148000	USD
CY2020Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	5174000	USD
CY2019Q1	us-gaap	Debt And Equity Securities Gain Loss DebtAndEquitySecuritiesGainLoss	-103000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	741828000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	762452000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity Within One Year Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityWithinOneYearWeightedAverageYield	0.0182
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	2591483000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	2691307000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity After One Through Five Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityAfterOneThroughFiveYearsWeightedAverageYield	0.0273
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	592020000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	609108000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity After Five Through Ten Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityAfterFiveThroughTenYearsWeightedAverageYield	0.0341
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	1264032000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	1297158000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Maturity After10 Years Weighted Average Yield DebtSecuritiesAvailableForSaleMaturityAfter10YearsWeightedAverageYield	0.0324
CY2020Q1	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	5189363000	USD
CY2020Q1	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	5360025000	USD
CY2020Q1	onb	Available For Sale Securities Debt Maturities Weighted Average Yield AvailableForSaleSecuritiesDebtMaturitiesWeightedAverageYield	0.0280
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	242995000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	4163000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	45885000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	8535000	USD
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	288880000	USD
CY2020Q1	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	12698000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months	1295822000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss	11960000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger	314350000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss	9700000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Unrealized Loss Position DebtSecuritiesAvailableForSaleUnrealizedLossPosition	1610172000	USD
CY2019Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	21660000	USD
CY2020Q1	onb	Debt Securities Available For Sale Accrued Interest After Allowance For Credit Loss DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss	22600000	USD
CY2019Q1	us-gaap	Other Than Temporary Impairment Loss Debt Securities Available For Sale OtherThanTemporaryImpairmentLossDebtSecuritiesAvailableForSale	0	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6900000	USD
CY2020Q1	onb	Number Of Securities In Security Portfolio NumberOfSecuritiesInSecurityPortfolio	1867	security
CY2020Q1	us-gaap	Debt Securities Available For Sale Unrealized Loss Position Number Of Positions DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions	186	security
CY2019Q4	us-gaap	Equity Securities Fv Ni EquitySecuritiesFvNi	6800000	USD
CY2020Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	100000	USD
CY2019Q1	us-gaap	Equity Securities Fv Ni Unrealized Gain Loss EquitySecuritiesFvNiUnrealizedGainLoss	200000	USD
CY2020Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Impairment Loss Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount	0	USD
CY2019Q1	us-gaap	Equity Securities Without Readily Determinable Fair Value Impairment Loss Annual Amount EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount	0	USD
CY2020Q1	onb	Financing Receivable Number Of Loan Portfolios FinancingReceivableNumberOfLoanPortfolios	4	portfolio
CY2020Q1	onb	Financing Receivable Number Of Loan Segments FinancingReceivableNumberOfLoanSegments	7	numberOfLoanPortfolios
CY2020Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	12384612000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	106380000	USD
CY2020Q1	us-gaap	Notes Receivable Net NotesReceivableNet	12278232000	USD
CY2020Q1	onb	Interest Receivable Loans InterestReceivableLoans	54000000.0	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54619000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	8445000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1909000	USD
CY2020Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	16950000	USD
CY2020Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	106380000	USD
CY2019Q4	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	2656000	USD
CY2020Q1	us-gaap	Off Balance Sheet Credit Loss Liability Credit Loss Expense Reversal OffBalanceSheetCreditLossLiabilityCreditLossExpenseReversal	1745000	USD
CY2020Q1	us-gaap	Off Balance Sheet Credit Loss Liability OffBalanceSheetCreditLossLiability	8950000	USD
CY2020Q1	onb	Finance Receivable Past Due Period For Nonaccrual Status FinanceReceivablePastDuePeriodForNonaccrualStatus	P90D
CY2020Q1	us-gaap	Financing Receivable Recorded Investment Past Due FinancingReceivableRecordedInvestmentPastDue	78400000	USD
CY2020Q1	us-gaap	Financing Receivable Recorded Investment Current FinancingReceivableRecordedInvestmentCurrent	12306212000	USD
CY2020Q1	us-gaap	Notes Receivable Gross NotesReceivableGross	12384612000	USD
CY2019Q4	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	132431000	USD
CY2020Q1	us-gaap	Financing Receivable Recorded Investment Nonaccrual Status FinancingReceivableRecordedInvestmentNonaccrualStatus	126987000	USD
CY2020Q1	us-gaap	Financing Receivable Nonaccrual No Allowance FinancingReceivableNonaccrualNoAllowance	20355000	USD
CY2020Q1	us-gaap	Financing Receivable Recorded Investment90 Days Past Due And Still Accruing FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing	658000	USD
CY2020Q1	us-gaap	Financing Receivable Nonaccrual Interest Income FinancingReceivableNonaccrualInterestIncome	0	USD
CY2020Q1	onb	Loan Participations LoanParticipations	849400000	USD
CY2020Q1	onb	Loan Participations Sold LoanParticipationsSold	401600000	USD
CY2020Q1	onb	Loan Participations Retained LoanParticipationsRetained	447800000	USD
CY2020Q1	onb	Troubled Debt Restructuring Modified Term TroubledDebtRestructuringModifiedTerm	P6M
CY2020Q1	onb	Non Accrual Loans Maximum Past Due Period NonAccrualLoansMaximumPastDuePeriod	P90D
CY2020Q1	onb	Loan Charge Off To Be Recorded Minimum Period LoanChargeOffToBeRecordedMinimumPeriod	P120D
CY2020Q1	onb	Loan Charge Off To Be Recorded Maximum Period LoanChargeOffToBeRecordedMaximumPeriod	P180D
CY2019Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	31738000	USD
CY2020Q1	onb	Financing Receivable Troubled Debt Restructuring Write Offs Recoveries FinancingReceivableTroubledDebtRestructuringWriteOffsRecoveries	-1961000	USD
CY2020Q1	onb	Financing Receivable Troubled Debt Restructuring Payments Disbursements FinancingReceivableTroubledDebtRestructuringPaymentsDisbursements	1103000	USD
CY2020Q1	onb	Financing Receivable Troubled Debt Restructuring Additions FinancingReceivableTroubledDebtRestructuringAdditions	0	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	28674000	USD
CY2020Q1	onb	Financing Receivable Troubled Debt Restructurings Included With Non Accrual Loan FinancingReceivableTroubledDebtRestructuringsIncludedWithNonAccrualLoan	11800000	USD
CY2019Q4	onb	Financing Receivable Troubled Debt Restructurings Included With Non Accrual Loan FinancingReceivableTroubledDebtRestructuringsIncludedWithNonAccrualLoan	13800000	USD
CY2020Q1	onb	Financing Receivable Troubled Debt Restructurings Specific Reserves FinancingReceivableTroubledDebtRestructuringsSpecificReserves	1400000	USD
CY2019Q4	onb	Financing Receivable Troubled Debt Restructurings Specific Reserves FinancingReceivableTroubledDebtRestructuringsSpecificReserves	900000	USD
CY2020Q1	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	900000	USD
CY2019Q4	us-gaap	Loans And Leases Receivable Impaired Commitment To Lend LoansAndLeasesReceivableImpairedCommitmentToLend	2300000	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	0	loan
CY2020Q1	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	0	USD
CY2020Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	0	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Number Of Contracts2 FinancingReceivableModificationsNumberOfContracts2	4	loan
CY2019Q1	us-gaap	Financing Receivable Modifications Pre Modification Recorded Investment2 FinancingReceivableModificationsPreModificationRecordedInvestment2	5510000	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Post Modification Recorded Investment2 FinancingReceivableModificationsPostModificationRecordedInvestment2	5510000	USD
CY2020Q1	onb	Loan To Be Considered As Payment Default In Period LoanToBeConsideredAsPaymentDefaultInPeriod	P90D
CY2018Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	55461000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	2892000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses Recovery FinancingReceivableAllowanceForCreditLossesRecovery	1947000	USD
CY2019Q1	us-gaap	Provision For Loan Losses Expensed ProvisionForLoanLossesExpensed	1043000	USD
CY2019Q1	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	55559000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1	8897000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment	45527000	USD
CY2019Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	54619000	USD
CY2019Q4	us-gaap	Financing Receivable Individually Evaluated For Impairment FinancingReceivableIndividuallyEvaluatedForImpairment	104767000	USD
CY2019Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	12117524000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	109239000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	110353000	USD
CY2019Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	8991000	USD
CY2019Q1	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	121139000	USD
CY2018Q4	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	43710000	USD
CY2019Q1	onb	Financing Receivable Troubled Debt Restructuring Write Offs Recoveries FinancingReceivableTroubledDebtRestructuringWriteOffsRecoveries	85000	USD
CY2019Q1	onb	Financing Receivable Troubled Debt Restructuring Payments Disbursements FinancingReceivableTroubledDebtRestructuringPaymentsDisbursements	2792000	USD
CY2019Q1	onb	Financing Receivable Troubled Debt Restructuring Additions FinancingReceivableTroubledDebtRestructuringAdditions	5510000	USD
CY2019Q1	us-gaap	Financing Receivable Modifications Recorded Investment FinancingReceivableModificationsRecordedInvestment	46343000	USD
CY2019Q4	us-gaap	Other Real Estate OtherRealEstate	2169000	USD
CY2018Q4	us-gaap	Other Real Estate OtherRealEstate	3232000	USD
CY2020Q1	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	146000	USD
CY2019Q1	us-gaap	Real Estate Other Additions RealEstateOtherAdditions	394000	USD
CY2020Q1	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	113000	USD
CY2019Q1	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	272000	USD
CY2020Q1	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	39000	USD
CY2019Q1	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	75000	USD
CY2020Q1	us-gaap	Other Real Estate OtherRealEstate	2163000	USD
CY2019Q1	us-gaap	Other Real Estate OtherRealEstate	3279000	USD
CY2020Q1	us-gaap	Foreclosed Assets ForeclosedAssets	400000	USD
CY2019Q1	us-gaap	Foreclosed Assets ForeclosedAssets	400000	USD
CY2020Q1	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	500000	USD
CY2019Q4	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	500000	USD
CY2020Q1	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	5100000	USD
CY2019Q4	us-gaap	Mortgage Loans In Process Of Foreclosure Amount MortgageLoansInProcessOfForeclosureAmount	3700000	USD
CY2020Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	593850000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	617284000	USD
CY2020Q1	onb	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	131486000	USD
CY2019Q4	onb	Property Plant And Equipment And Finance Lease Right Of Use Asset Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization	126359000	USD
CY2020Q1	onb	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	462364000	USD
CY2019Q4	onb	Property Plant And Equipment And Finance Lease Right Of Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization	490925000	USD
CY2020Q1	us-gaap	Depreciation Depreciation	8600000	USD
CY2019Q1	us-gaap	Depreciation Depreciation	6400000	USD
CY2020Q1	us-gaap	Lease Cost LeaseCost	9298000	USD
CY2019Q1	us-gaap	Lease Cost LeaseCost	4463000	USD
CY2020Q1	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	86819000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	95477000	USD
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	95830000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	99500000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	7004000	USD
CY2019Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	7170000	USD
CY2020Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	7284000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	7406000	USD
CY2020Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y6M
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y7M6D
CY2020Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P11Y
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P11Y3M18D
CY2020Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0343
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0345
CY2020Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0444
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0443
CY2020Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	4193000	USD
CY2019Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	4436000	USD
CY2020Q1	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	78000	USD
CY2019Q1	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	81000	USD
CY2020Q1	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	122000	USD
CY2019Q1	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	111000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	12306000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	603000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	15492000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	809000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	13695000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	815000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	9078000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	830000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	7840000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	858000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	56858000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	5374000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	115269000	USD
CY2020Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	9289000	USD
CY2020Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	19439000	USD
CY2020Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	2005000	USD
CY2020Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	95830000	USD
CY2020Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	7284000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received Remainder Of Fiscal Year LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear	1832000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	2295000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	1941000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	1536000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	1409000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	2520000	USD
CY2020Q1	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	11533000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	1036994000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	1036258000	USD
CY2020Q1	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2019Q1	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	0	USD
CY2020Q1	us-gaap	Goodwill Goodwill	1036994000	USD
CY2019Q1	us-gaap	Goodwill Goodwill	1036258000	USD
CY2019Q3	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	135598000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	79269000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	56329000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	135598000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	75493000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	60105000	USD
CY2019Q1	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2020Q1	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3800000	USD
CY2019Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4500000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	10315000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	11336000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9014000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	7053000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	5645000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	12966000	USD
CY2020Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	56329000	USD
CY2020Q1	us-gaap	Servicing Asset ServicingAsset	24100000	USD
CY2019Q4	us-gaap	Servicing Asset ServicingAsset	25400000	USD
CY2020Q1	onb	Principal Balance Of Loans Serviced For Others PrincipalBalanceOfLoansServicedForOthers	3467000000	USD
CY2019Q4	us-gaap	Escrow Deposit EscrowDeposit	12700000	USD
CY2019Q4	onb	Principal Balance Of Loans Serviced For Others PrincipalBalanceOfLoansServicedForOthers	3445000000	USD
CY2020Q1	onb	Percentage Of Mortgage Loans PercentageOfMortgageLoans	0.998
CY2020Q1	us-gaap	Escrow Deposit EscrowDeposit	28400000	USD
CY2019Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	25399000	USD
CY2018Q4	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	24512000	USD
CY2020Q1	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	1731000	USD
CY2019Q1	us-gaap	Servicing Asset At Amortized Value Additions ServicingAssetAtAmortizedValueAdditions	659000	USD
CY2020Q1	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	1555000	USD
CY2019Q1	us-gaap	Servicing Asset At Amortized Value Amortization1 ServicingAssetAtAmortizedValueAmortization1	900000	USD
CY2020Q1	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	25575000	USD
CY2019Q1	us-gaap	Servicing Asset At Amortized Value ServicingAssetAtAmortizedValue	24271000	USD
CY2019Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	31000	USD
CY2018Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	15000	USD
CY2020Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	1412000	USD
CY2019Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	2000	USD
CY2020Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	1443000	USD
CY2019Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	17000	USD
CY2020Q1	us-gaap	Servicing Asset ServicingAsset	24132000	USD
CY2019Q1	us-gaap	Servicing Asset ServicingAsset	24254000	USD
CY2020Q1	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	24100000	USD
CY2020Q1	onb	Fair Value Inputs Discount Rate1 FairValueInputsDiscountRate1	0.09
CY2020Q1	onb	Fair Value Inputs Weighted Average Prepayment Speed FairValueInputsWeightedAveragePrepaymentSpeed	0.16
CY2019Q4	us-gaap	Servicing Asset At Fair Value Amount ServicingAssetAtFairValueAmount	26500000	USD
CY2019	onb	Fair Value Inputs Discount Rate1 FairValueInputsDiscountRate1	0.12
CY2019Q4	onb	Fair Value Inputs Weighted Average Prepayment Speed FairValueInputsWeightedAveragePrepaymentSpeed	0.10
CY2020Q1	onb	Investments In Qualified Affordable Housing Projects InvestmentsInQualifiedAffordableHousingProjects	61820000	USD
CY2020Q1	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	30472000	USD
CY2019Q4	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	337185000	USD
CY2019Q4	onb	Investments In Qualified Affordable Housing Projects InvestmentsInQualifiedAffordableHousingProjects	59661000	USD
CY2019Q4	us-gaap	Qualified Affordable Housing Project Investments Commitment QualifiedAffordableHousingProjectInvestmentsCommitment	25926000	USD
CY2020Q1	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	6291000	USD
CY2020Q1	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	2775000	USD
CY2019Q1	us-gaap	Amortization Method Qualified Affordable Housing Project Investments Amortization AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization	1052000	USD
CY2019Q1	us-gaap	Affordable Housing Tax Credits And Other Tax Benefits Amount AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount	1286000	USD
CY2020Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	318067000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	327782000	USD
CY2019Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	342480000	USD
CY2020Q1	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	329091000	USD
CY2019Q4	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	337786000	USD
CY2019Q1	us-gaap	Shortterm Debt Average Outstanding Amount ShorttermDebtAverageOutstandingAmount	361261000	USD
CY2020Q1	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	318067000	USD
CY2019Q1	us-gaap	Shortterm Debt Maximum Monthend Outstanding Amount ShorttermDebtMaximumMonthendOutstandingAmount	367884000	USD
CY2020Q1	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.0047
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.0055
CY2019Q1	us-gaap	Short Term Debt Weighted Average Interest Rate Over Time ShortTermDebtWeightedAverageInterestRateOverTime	0.0074
CY2020Q1	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0022
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0053
CY2019Q1	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0079
CY2020Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	318067000	USD
CY2020Q1	onb	Percentage Pledged Securities Of Repurchase Agreements Outstanding Balance PercentagePledgedSecuritiesOfRepurchaseAgreementsOutstandingBalance	1.21
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	2100660000	USD
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Long Term FederalHomeLoanBankAdvancesLongTerm	1800664000	USD
CY2020Q1	onb	Asc815 Fair Value Hedge And Other Basis Adjustments Asc815FairValueHedgeAndOtherBasisAdjustments	29603000	USD
CY2019	onb	Asc815 Fair Value Hedge And Other Basis Adjustments Asc815FairValueHedgeAndOtherBasisAdjustments	22183000	USD
CY2020Q1	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	2130263000	USD
CY2019Q4	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	1822847000	USD
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0179
CY2019Q4	us-gaap	Federal Home Loan Bank Advances Activity For Year Average Interest Rate At Period End FederalHomeLoanBankAdvancesActivityForYearAverageInterestRateAtPeriodEnd	0.0219
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due In Remainder Of Fiscal Year FederalHomeLoanBankAdvancesMaturitiesSummaryDueInRemainderOfFiscalYear	125000000	USD
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From One To Two Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromOneToTwoYearsOfBalanceSheetDate	20000000	USD
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Two To Three Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromTwoToThreeYearsOfBalanceSheetDate	130500000	USD
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Three To Four Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromThreeToFourYearsOfBalanceSheetDate	160000	USD
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due From Four To Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueFromFourToFiveYearsOfBalanceSheetDate	375000000	USD
CY2020Q1	us-gaap	Federal Home Loan Bank Advances Maturities Summary Due After Five Years Of Balance Sheet Date FederalHomeLoanBankAdvancesMaturitiesSummaryDueAfterFiveYearsOfBalanceSheetDate	1450000000	USD
CY2020Q1	onb	Asc815 Fair Value Hedge And Other Basis Adjustments Asc815FairValueHedgeAndOtherBasisAdjustments	29603000	USD
CY2020Q1	us-gaap	Advances From Federal Home Loan Banks AdvancesFromFederalHomeLoanBanks	2130263000	USD
CY2020Q1	us-gaap	Other Borrowings OtherBorrowings	236114000	USD
CY2019Q4	us-gaap	Other Borrowings OtherBorrowings	243685000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	376000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	524000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	553000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	591000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	175643000	USD
CY2020Q1	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	61690000	USD
CY2020Q1	onb	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net And Other Basis Adjustments DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetAndOtherBasisAdjustments	3263000	USD
CY2020Q1	us-gaap	Other Borrowings OtherBorrowings	236114000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	86255000	USD
CY2020Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	4305000	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	47415000	USD
CY2019Q1	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-155000	USD
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	3200000	shares
CY2020Q1	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2020Q1	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	5372000	USD
CY2020Q1	onb	Income Tax Reconciliation Non Deductibel Expense Interest Disallowance IncomeTaxReconciliationNonDeductibelExpenseInterestDisallowance	73000	USD
CY2019Q1	onb	Income Tax Reconciliation Non Deductibel Expense Interest Disallowance IncomeTaxReconciliationNonDeductibelExpenseInterestDisallowance	111000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-647000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	14570000	USD
CY2020Q1	onb	Income Tax Reconciliation Tax Exempt Interest IncomeTaxReconciliationTaxExemptInterest	2632000	USD
CY2019Q1	onb	Income Tax Reconciliation Tax Exempt Interest IncomeTaxReconciliationTaxExemptInterest	2531000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Nondeductible Expense Life Insurance IncomeTaxReconciliationNondeductibleExpenseLifeInsurance	-669000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3206000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	3089000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-8000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	1999000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	3267000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	688000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	1902000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	420000	USD
CY2020Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-584000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	28603000	USD
CY2019Q1	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-644000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2939000	USD
CY2019Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	13104000	USD
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.115
CY2019Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.189
CY2020Q1	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Provision For Loan Losses DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses	14179000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	13268000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	19673000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1272000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	1272000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	21575000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	25336000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	3238000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	0	USD
CY2020Q1	onb	Deferred Tax Assets Deferred Gain On Securities DeferredTaxAssetsDeferredGainOnSecurities	3339000	USD
CY2019Q4	onb	Deferred Tax Assets Deferred Gain On Securities DeferredTaxAssetsDeferredGainOnSecurities	3754000	USD
CY2020Q1	onb	Deferred Tax Assets Acquired Loan DeferredTaxAssetsAcquiredLoan	15341000	USD
CY2019Q4	onb	Deferred Tax Assets Acquired Loan DeferredTaxAssetsAcquiredLoan	16784000	USD
CY2020Q1	onb	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	25591000	USD
CY2019Q4	onb	Deferred Tax Assets Operating Lease Liabilities DeferredTaxAssetsOperatingLeaseLiabilities	26503000	USD
CY2020Q1	onb	Deferred Tax Assets Investments And Other Partnerships DeferredTaxAssetsInvestmentsAndOtherPartnerships	2808000	USD
CY2019Q4	onb	Deferred Tax Assets Investments And Other Partnerships DeferredTaxAssetsInvestmentsAndOtherPartnerships	1765000	USD
CY2020Q1	onb	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	143000	USD
CY2019Q4	onb	Deferred Tax Assets Other Real Estate Owned DeferredTaxAssetsOtherRealEstateOwned	141000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	790000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	591000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	115968000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	109998000	USD
CY2020Q1	onb	Deferred Tax Liabilities Purchase Accounting DeferredTaxLiabilitiesPurchaseAccounting	18187000	USD
CY2019Q4	onb	Deferred Tax Liabilities Purchase Accounting DeferredTaxLiabilitiesPurchaseAccounting	17564000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	5989000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Mortgage Servicing Rights DeferredTaxLiabilitiesMortgageServicingRights	6289000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8139000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	12167000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	973000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Prepaid Expenses DeferredTaxLiabilitiesPrepaidExpenses	973000	USD
CY2020Q1	onb	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	23285000	USD
CY2019Q4	onb	Deferred Tax Liabilities Operating Lease Right Of Use Assets DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets	25448000	USD
CY2020Q1	onb	Deferred Tax Liabilities Unrealized Gains On Available For Sale Investment Securities DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleInvestmentSecurities	38162000	USD
CY2019Q4	onb	Deferred Tax Liabilities Unrealized Gains On Available For Sale Investment Securities DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleInvestmentSecurities	15751000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	1889000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	78000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	1768000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	2023000	USD
CY2020Q1	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	98392000	USD
CY2020Q1	onb	Alternative Minimum Tax Amt Credit Carryforwards AlternativeMinimumTaxAMTCreditCarryforwards	1300000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	80293000	USD
CY2020Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	17576000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	29705000	USD
CY2020Q1	us-gaap	Bad Debt Reserve For Tax Purposes Of Qualified Lender BadDebtReserveForTaxPurposesOfQualifiedLender	52800000	USD
CY2020Q1	us-gaap	Deferred Tax Liability Not Recognized Amount Of Unrecognized Deferred Tax Liability Bad Debt Reserve For Tax Purposes Of Qualified Lender DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityBadDebtReserveForTaxPurposesOfQualifiedLender	13000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	0	USD
CY2019Q4	onb	Alternative Minimum Tax Amt Credit Carryforwards AlternativeMinimumTaxAMTCreditCarryforwards	1300000	USD
CY2020Q1	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	905500000	USD
CY2019Q4	us-gaap	Derivative Notional Amount DerivativeNotionalAmount	665500000	USD
CY2020Q1	onb	Percentage Of Periodic Changes In Fair Value Qualifies For Hedge Accounting PercentageOfPeriodicChangesInFairValueQualifiesForHedgeAccounting	1
CY2020Q1	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	149873000	USD
CY2020Q1	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	35219000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	51301000	USD
CY2019Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	12393000	USD
CY2020Q1	onb	Counterparty Interest Rate Swaps Fair Value CounterpartyInterestRateSwapsFairValue	0	USD
CY2020Q1	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	88900000	USD
CY2019Q4	us-gaap	Interest Rate Derivatives At Fair Value Net InterestRateDerivativesAtFairValueNet	31600000	USD
CY2020Q1	onb	Loan Commitments LoanCommitments	2898000000	USD
CY2020Q1	onb	Notional Amount Of Standby Letters Of Credit NotionalAmountOfStandbyLettersOfCredit	82400000	USD
CY2020Q1	us-gaap	Loans And Leases Receivable Commitments Fixed Rates LoansAndLeasesReceivableCommitmentsFixedRates	2621000000	USD
CY2020Q1	us-gaap	Loans And Leases Receivable Commitments Variable Rates LoansAndLeasesReceivableCommitmentsVariableRates	277000000.0	USD
CY2020Q1	onb	Loan Commitments Floating Interest Rate Minimum LoanCommitmentsFloatingInterestRateMinimum	0
CY2020Q1	onb	Loan Commitments Floating Interest Rate Maximum LoanCommitmentsFloatingInterestRateMaximum	0.13
CY2019Q4	onb	Loan Commitments LoanCommitments	2779000000	USD
CY2019Q4	onb	Notional Amount Of Standby Letters Of Credit NotionalAmountOfStandbyLettersOfCredit	87800000	USD
CY2020Q1	onb	Allowance For Unfunded Loan Commitments AllowanceForUnfundedLoanCommitments	9000000.0	USD
CY2019Q4	onb	Allowance For Unfunded Loan Commitments AllowanceForUnfundedLoanCommitments	2700000	USD
CY2019Q4	onb	Credit Extended CreditExtended	8700000	USD
CY2020Q1	onb	Credit Extended CreditExtended	8700000	USD
CY2019Q4	onb	Credit Extensions With Collateral CreditExtensionsWithCollateral	7700000	USD
CY2020Q1	onb	Credit Extensions With Collateral CreditExtensionsWithCollateral	7700000	USD
CY2020Q1	onb	Term Of Standby Letters Of Credit TermOfStandbyLettersOfCredit	P1Y
CY2020Q1	onb	Notional Amount Of Standby Letters Of Credit NotionalAmountOfStandbyLettersOfCredit	82400000	USD
CY2020Q1	onb	Carrying Value Of Letter Of Credit CarryingValueOfLetterOfCredit	500000	USD
CY2019Q4	onb	Notional Amount Of Standby Letters Of Credit NotionalAmountOfStandbyLettersOfCredit	87800000	USD
CY2019Q4	onb	Carrying Value Of Letter Of Credit CarryingValueOfLetterOfCredit	600000	USD
CY2020Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	1400000	USD
CY2020Q1	onb	Percentage Of Default Probability Assigned To Pool Of Assets PercentageOfDefaultProbabilityAssignedToPoolOfAssets	1
CY2020Q1	onb	Percentage Of Recovery Probability Assigned To Each Defaulted Pool Asset PercentageOfRecoveryProbabilityAssignedToEachDefaultedPoolAsset	1
CY2020Q1	onb	Other Real Estate Owned And Other Repossessed Property OtherRealEstateOwnedAndOtherRepossessedProperty	200000	USD
CY2020Q1	onb	Other Real Estate Owned Property Write Down OtherRealEstateOwnedPropertyWriteDown	11000	USD
CY2020Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	1400000	USD
CY2019Q1	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Provisions Recoveries ValuationAllowanceForImpairmentOfRecognizedServicingAssetsProvisionsRecoveries	2000	USD
CY2019Q4	onb	Other Real Estate Owned And Other Repossessed Property OtherRealEstateOwnedAndOtherRepossessedProperty	43000	USD
CY2019Q4	us-gaap	Valuation Allowance For Impairment Of Recognized Servicing Assets Balance ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance	31000	USD
CY2020Q1	onb	Past Due Period Of Mortgage Loans Held For Sale PastDuePeriodOfMortgageLoansHeldForSale	P90D
CY2020Q1	us-gaap	Interest And Fee Income Loans Commercial And Residential Real Estate InterestAndFeeIncomeLoansCommercialAndResidentialRealEstate	400000	USD
CY2019Q1	us-gaap	Interest And Fee Income Loans Commercial And Residential Real Estate InterestAndFeeIncomeLoansCommercialAndResidentialRealEstate	200000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	31007000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	31493000	USD

Files In Submission

Name	View Source	Status
0000707179-20-000076-index-headers.html	Edgar Link	pending
0000707179-20-000076-index.html	Edgar Link	pending
0000707179-20-000076.txt	Edgar Link	pending
0000707179-20-000076-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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onb-20200331.htm	Edgar Link	pending
onb-20200331.xsd	Edgar Link	pending
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onb-20200331_htm.xml	Edgar Link	completed
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$ONB
Old National Bancorp Stock $onb

2020 Q1 Form 10-Q Financial Statement

#000070717920000076 Filed on April 29, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ONB Old National Bancorp Stock $onb

2020 Q1 Form 10-Q Financial Statement

#000070717920000076 Filed on April 29, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$ONB
Old National Bancorp Stock $onb