Quarterly report [Sections 13 or 15(d)]

VARIABLE INTEREST ENTITIES - Narrative (Details)

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VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Variable Interest Entity [Line Items]    
Loans retained by Huntington   $ 128,000,000
Affordable housing investments, impairment $ 0 0
Consolidated VIE | Asset-backed securities    
Variable Interest Entity [Line Items]    
Aggregate loans   1,600,000,000
Consolidated VIE | Consumer | Automobile    
Variable Interest Entity [Line Items]    
Aggregate loans   $ 1,600,000,000