XML 168 R9999.htm IDEA: XBRL DOCUMENT
v3.20.4

Label | Element | Value
--- | --- | ---
CARES Act Modification Program [Member] |  |
Financing Receivable, Non-Troubled Debt Restructuring Modifications, Amount | onb_FinancingReceivableNonTroubledDebtRestructuringModificationsAmount | $ 1,303,544,000
Commercial And Commercial Real Estate Portfolio Segments [Member] | CARES Act Modification Program [Member] |  |
Financing Receivable, Non-Troubled Debt Restructuring Modifications, Amount | onb_FinancingReceivableNonTroubledDebtRestructuringModificationsAmount | 1,170,119,000
Residential Portfolio Segment [Member] | CARES Act Modification Program [Member] |  |
Financing Receivable, Non-Troubled Debt Restructuring Modifications, Amount | onb_FinancingReceivableNonTroubledDebtRestructuringModificationsAmount | 78,639,000
Consumer Portfolio Segment [Member] | CARES Act Modification Program [Member] |  |
Financing Receivable, Non-Troubled Debt Restructuring Modifications, Amount | onb_FinancingReceivableNonTroubledDebtRestructuringModificationsAmount | $ 54,786,000

X
- Definition Financing Receivable, Non-Troubled Debt Restructuring Modifications, Amount + References No definition available. + Details
Name: | onb_FinancingReceivableNonTroubledDebtRestructuringModificationsAmount
Namespace Prefix: | onb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LoanRestructuringModificationNameAxis=onb_CARESActModificationProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=onb_CommercialAndCommercialRealEstatePortfolioSegmentsMember
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: |