XML 73 R58.htm IDEA: XBRL DOCUMENT
v3.21.1

Loans and Allowance for Credit Losses - Schedule of Composition of Loans and Impact of Adoption (Detail) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | --- | --- | ---
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | $ 13,925,261 | $ 13,786,479 |  |
Allowance | (114,037) | (131,388) | $ (106,380) | $ (54,619)
Net loans | 13,811,224 | 13,655,091 |  |
Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 0 |  |  |
Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 13,925,261 | 13,786,479 |  |
Allowance | (114,037) | (131,388) |  |
Net loans | 13,811,224 | 13,655,091 |  |
Commercial |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 4,068,896 | 3,956,422 |  |
Allowance | (25,130) | (30,567) | (31,125) | (21,359)
Commercial | PPP Loans |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 1,124,000 | 943,000 |  |
Commercial | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | (187,967) |  |  |
Commercial | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 3,880,929 | 3,757,700 |  |
Commercial real estate |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 6,074,135 | 5,946,512 |  |
Allowance | (70,561) | (75,810) | (54,103) | (20,535)
Commercial real estate | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | (168,283) |  |  |
Commercial real estate | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 5,905,852 | 5,774,811 |  |
BBCC |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Allowance | (2,537) | (6,120) | (5,417) | (2,279)
BBCC | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 356,250 |  |  |
BBCC | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 356,250 | 370,423 |  |
Residential real estate |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 2,203,277 | 2,248,422 |  |
Allowance | (10,265) | (12,608) | (9,637) | (2,299)
Residential real estate | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 0 |  |  |
Residential real estate | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 2,203,277 | 2,248,422 |  |
Consumer credit |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 1,578,953 | 1,635,123 |  |
Consumer credit | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | (1,578,953) |  |  |
Indirect |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 887,333 | 913,902 |  |
Allowance | (2,255) | (3,580) | (3,666) | (5,319)
Indirect | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 887,333 |  |  |
Indirect | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 887,333 | 913,902 |  |
Direct |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 150,471 | 164,807 |  |
Allowance | (665) | (855) | (822) | (1,863)
Direct | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 150,471 |  |  |
Direct | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 150,471 | 164,807 |  |
Home equity |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 541,149 | 556,414 |  |
Allowance | (2,624) | (1,848) | $ (1,610) | $ (965)
Home equity | Segment Portfolio Reclassification |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 541,149 |  |  |
Home equity | Segment Portfolio Reclassification, Adjusted Balance |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | 541,149 | 556,414 |  |
Direct Finance Leases |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |
Total loans | $ 29,900 | $ 32,300 |  |

X
- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121599878&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, before allowance for credit loss, of financing receivable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=121647567&loc=SL82922355-210448 + Details
Name: | us-gaap_NotesReceivableGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_ReclassificationTypeAxis=onb_SegmentPortfolioReclassificationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ReclassificationTypeAxis=onb_SegmentPortfolioReclassificationAdjustedBalanceMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=onb_PaycheckProtectionProgramLoansMember
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=us-gaap_ConsumerPortfolioSegmentMember
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: |

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