v3.26.1
BORROWINGS - Schedule of Long-Term Debt and Debt Issuances (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Long-term debt [1] $ 21,594 $ 17,221
FHLB Advances    
Debt Instrument [Line Items]    
Long-term debt 7,156 4,514
Credit Linked Notes    
Debt Instrument [Line Items]    
Long-term debt $ 1,434 1,161
Credit Linked Notes | Huntington National Bank Unsecured Notes Maturing May 20, 2032    
Debt Instrument [Line Items]    
Weighted average rate 5.54%  
Auto Loan Securitization Trust    
Debt Instrument [Line Items]    
Long-term debt $ 512 600
Weighted average rate 5.21%  
Other    
Debt Instrument [Line Items]    
Long-term debt $ 498 497
Parent    
Debt Instrument [Line Items]    
Long-term debt 8,575 7,024
Parent | Senior Notes    
Debt Instrument [Line Items]    
Long-term debt 6,469 5,514
Parent | Subordinated Notes    
Debt Instrument [Line Items]    
Long-term debt 2,106 1,510
Bank    
Debt Instrument [Line Items]    
Long-term debt 3,419 3,425
Bank | Senior Notes    
Debt Instrument [Line Items]    
Long-term debt 3,185 3,192
Bank | Subordinated Notes    
Debt Instrument [Line Items]    
Long-term debt $ 234 $ 233
[1] Includes VIE balances in net loans and leases, other assets, long-term debt, and other liabilities of $576 million, $421 million, $512 million, and $147
million, respectively, at March 31, 2026, and $669 million, $431 million, $600 million, and $152 million, respectively, at December 31, 2025. See Note 16 -
“Variable Interest Entities” for additional information.