XML 149 R134.htm IDEA: XBRL DOCUMENT v3.22.0.1

Financial Guarantees (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Term of standby letters of credit, years	1 year
Notional amount of standby letters of credit	$ 75.7	$ 86.9
Carrying value of letters of credit	0.5	$ 0.5
Interest Rate Swap
Derivative [Line Items]
Notional amount	$ 97.7

X

- Definition

Carrying value of standby letters of credit financial instruments.

+ References

No definition available.

+ Details

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Namespace Prefix:	onb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of agreement to extend credit in the form of a standby letter of credit.

+ References

No definition available.

+ Details

Name:	onb_NotionalAmountOfStandbyLettersOfCredit
Namespace Prefix:	onb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Length of time that standby letters of credit are effective.

+ References

No definition available.

+ Details

Name:	onb_TermOfStandbyLettersOfCredit
Namespace Prefix:	onb_
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Balance Type:	na
Period Type:	duration

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

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Data Type:	xbrli:stringItemType
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X

- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

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- Details

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