Quarterly report pursuant to Section 13 or 15(d)

DERIVATIVE FINANCIAL INSTRUMENTS - Derivatives Used In Customer Related Activities (Details)

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DERIVATIVE FINANCIAL INSTRUMENTS - Derivatives Used In Customer Related Activities (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Dec. 31, 2023
Derivative [Line Items]    
Credit risks from interest rate swaps used for trading purposes $ 78 $ 122
Derivative used in trading activity    
Derivative [Line Items]    
Net derivative asset (liability) 57 47
Derivative financial instruments used by Huntington on behalf of customers including offsetting derivatives, notional value $ 44,700 $ 44,500