Annual report pursuant to Section 13 and 15(d)

LOANS AND LEASES - Credit Quality Indicators (Details)

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LOANS AND LEASES - Credit Quality Indicators (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases [1] $ 111,920 $ 81,608
Commercial portfolio    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 61,649 42,572
Consumer portfolio    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 50,271 39,036
Automobile    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 13,434 12,778
Automobile | Consumer portfolio    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 13,434 12,778
Home equity    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 19,256 12,141
Home equity | Consumer portfolio    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 10,550 8,894
RV and marine    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases 5,058 4,190
RV and marine | Consumer portfolio    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total loans and leases $ 5,058 $ 4,190
[1] Amounts represent loans for which Huntington has elected the fair value option. See Note 19 “Fair Values of Assets and Liabilities”.