XML 96 R79.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Loans and Allowance for Credit Losses - Schedule of Types of Collateral (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | $ 36,285,887 | $ 32,991,927
Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 333,461 | 226,996
Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 70,680 | 25,524
Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 8,135 | 3,747
Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 12,560 | 5,243
Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 5,249 | 6,464
Commercial |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 10,288,560 | 9,512,230
Commercial | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 17,520 | 14,303
Commercial | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 68,985 | 24,729
Commercial | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 6,980 | 2,577
Commercial | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 6,544 | 280
Commercial | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 5,215 | 328
Commercial real estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 16,307,486 | 14,140,629
Commercial real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 228,952 | 146,425
Commercial real estate | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 542 | 0
Commercial real estate | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 1,046 | 1,167
Commercial real estate | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Commercial real estate | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 6,107
BBCC | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 3,201 | 3,522
BBCC | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 1,137 | 794
BBCC | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 86 | 0
BBCC | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 248 | 390
BBCC | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Residential real estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 6,797,586 | 6,699,443
Residential real estate | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 60,454 | 41,771
Residential real estate | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Residential real estate | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Residential real estate | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Residential real estate | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Indirect |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 1,096,778 | 1,050,982
Indirect | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Indirect | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Indirect | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Indirect | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 5,372 | 4,207
Indirect | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Direct |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 514,144 | 523,172
Direct | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 2,623 | 4,727
Direct | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 16 | 1
Direct | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 23 | 3
Direct | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 396 | 366
Direct | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 34 | 29
Home equity |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 1,281,333 | 1,065,471
Home equity | Real Estate |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 20,711 | 16,248
Home equity | Blanket Lien |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Home equity | Investment Securities/Cash |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Home equity | Auto |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | 0 | 0
Home equity | Other |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Total loans, net of unearned income | $ 0 | $ 0

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_RealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=onb_BlanketLienCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=onb_InvestmentSecuritiesAndCashCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_AutomobilesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=onb_OtherCollateralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=onb_BusinessBankingCreditCenterPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=onb_IndirectPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=onb_DirectPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=onb_HomeEquityPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |