DERIVATIVE FINANCIAL INSTRUMENTS - Derivatives Used In Customer Related Activities (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Credit risks from interest rate swaps used for trading purposes	$ 139	$ 118
Derivative used in trading activity
Derivative [Line Items]
Net derivative asset (liability)	61	59
Derivative financial instruments used by Huntington on behalf of customers including offsetting derivatives, notional value	$ 42,700	$ 40,700

Credit risks from interest rate swaps used for trading purposes.

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- Definition

Derivative financial instruments used by Huntington on behalf of customers including offsetting derivatives, notional value.

+ References

No definition available.

+ Details

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-SubTopic 10
-Topic 815
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480463/815-10-45-5

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- 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
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-5

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