Quarterly report pursuant to Section 13 or 15(d)

VARIABLE INTEREST ENTITIES - Narrative (Details)

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VARIABLE INTEREST ENTITIES - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Mar. 31, 2024
Variable Interest Entity [Line Items]          
Loans retained by Huntington         $ 128,000,000
Affordable housing investments, impairment $ 0 $ 0 $ 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