Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUES OF ASSETS AND LIABILITIES - Balance Sheet Location (Details)

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FAIR VALUES OF ASSETS AND LIABILITIES - Balance Sheet Location (Details) - USD ($)
$ in Millions
Sep. 30, 2023
Dec. 31, 2022
Financial Assets    
Available-for-sale securities $ 21,863 $ 23,423
Held-to-maturity securities 16,148 17,052
Loans held for sale [1] 603 529
Net loans and leases 118,645 117,402
Derivative assets, gross 2,387 2,164
Derivative assets, netting adjustments (1,923) (1,808)
Derivative assets, net 464 356
Financial Liabilities    
Total deposits 148,867 147,914
Short-term borrowings 681 2,027
Long-term debt 12,822 9,686
Derivative liabilities, gross 2,237 2,337
Derivative liabilities, netting adjustments (1,160) (1,345)
Derivative liabilities, net 1,077 992
Reported Value Measurement    
Financial Assets    
Cash and short-term assets 11,693 6,918
Trading account securities 121 19
Available-for-sale securities 21,863 23,423
Held-to-maturity securities 16,148 17,052
Other securities 718 854
Loans held for sale 603 529
Net loans and leases 118,645 117,402
Derivative assets, net 464 356
Assets held in trust for deferred compensation plans 161 155
Financial Liabilities    
Total deposits 148,867 147,914
Short-term borrowings 681 2,027
Long-term debt 12,822 9,686
Derivative liabilities, net 1,077 992
Estimate of Fair Value Measurement    
Financial Assets    
Cash and short-term assets 11,693 6,918
Trading account securities 121 19
Available-for-sale securities 21,863 23,423
Held-to-maturity securities 13,309 14,754
Other securities 718 854
Other securities 30 32
Loans held for sale 603 529
Net loans and leases 114,540 112,591
Derivative assets, net 464 356
Assets held in trust for deferred compensation plans 161 155
Financial Liabilities    
Total deposits 148,771 147,796
Short-term borrowings 681 2,027
Long-term debt 12,584 9,564
Derivative liabilities, net 1,077 992
Estimate of Fair Value Measurement | Level 1    
Financial Assets    
Trading account securities 90 0
Available-for-sale securities 5 103
Held-to-maturity securities 0 0
Other securities 29 31
Loans held for sale 0 0
Net loans and leases 0 0
Financial Liabilities    
Total deposits 0 0
Short-term borrowings 0 0
Long-term debt 0 0
Estimate of Fair Value Measurement | Level 2    
Financial Assets    
Trading account securities 31 19
Available-for-sale securities 18,326 19,978
Held-to-maturity securities 13,309 14,754
Other securities 1 1
Loans held for sale 603 520
Net loans and leases 122 169
Derivative assets, gross 2,383 2,161
Financial Liabilities    
Total deposits 134,529 142,081
Short-term borrowings 681 2,027
Long-term debt 9,275 8,680
Derivative liabilities, gross 2,232 2,332
Estimate of Fair Value Measurement | Level 3    
Financial Assets    
Trading account securities 0 0
Available-for-sale securities 3,532 3,342
Held-to-maturity securities 0 0
Other securities 0 0
Loans held for sale 0 9
Net loans and leases 114,418 112,422
Derivative assets, gross 4 3
Derivative assets, netting adjustments (1,923) (1,808)
Financial Liabilities    
Total deposits 14,242 5,715
Short-term borrowings 0 0
Long-term debt 3,309 884
Derivative liabilities, gross 5 5
Derivative liabilities, netting adjustments (1,160) (1,345)
Fair Value, Recurring    
Financial Assets    
Trading account securities 121  
Available-for-sale securities 21,863 23,423
Derivative assets, netting adjustments (1,923) (1,808)
Derivative assets, net 464 356
Financial Liabilities    
Derivative liabilities, netting adjustments (1,160) (1,345)
Derivative liabilities, net 1,077 992
Fair Value, Recurring | Level 1    
Financial Assets    
Trading account securities 90  
Available-for-sale securities 5 103
Derivative assets, gross 0 0
Financial Liabilities    
Derivative liabilities, gross 0 0
Fair Value, Recurring | Level 2    
Financial Assets    
Trading account securities 31  
Available-for-sale securities 18,326 19,978
Derivative assets, gross 2,383 2,161
Financial Liabilities    
Derivative liabilities, gross 2,232 2,332
Fair Value, Recurring | Level 3    
Financial Assets    
Trading account securities 0  
Available-for-sale securities 3,532 3,342
Derivative assets, gross 4 3
Financial Liabilities    
Derivative liabilities, gross 5 5
Other securities | Fair Value, Recurring    
Financial Assets    
Available-for-sale securities 4 4
Other securities | Fair Value, Recurring | Level 1    
Financial Assets    
Available-for-sale securities 0 0
Other securities | Fair Value, Recurring | Level 2    
Financial Assets    
Available-for-sale securities 4 4
Other securities | Fair Value, Recurring | Level 3    
Financial Assets    
Available-for-sale securities 0 0
Amortized Cost | Reported Value Measurement    
Financial Assets    
Cash and short-term assets 11,693 6,918
Held-to-maturity securities 16,148 17,052
Other securities 688 822
Net loans and leases 118,470 117,217
Financial Liabilities    
Total deposits 148,867 147,914
Short-term borrowings 681 2,027
Long-term debt 12,822 9,686
Fair Value or Fair Value Option | Reported Value Measurement    
Financial Assets    
Trading account securities 121 19
Available-for-sale securities 21,863 23,423
Other securities 30 32
Loans held for sale 601 520
Net loans and leases 175 185
Derivative assets, net 464 356
Assets held in trust for deferred compensation plans 161 155
Financial Liabilities    
Derivative liabilities, net 1,077 992
Lower of Cost or Market | Reported Value Measurement    
Financial Assets    
Loans held for sale $ 2 $ 9
[1] Amounts represent loans for which Huntington has elected the fair value option. See Note 12 “Fair Values of Assets and Liabilities”.