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, 2019
Dec. 31, 2018
Financial Assets:    
Trading account securities $ 118 $ 105
Debt Securities, Held-to-maturity 8,430 8,565
Loans held for sale [1] 1,064 804
Net loans and direct financing leases 74,109 74,128
Derivatives 577 209
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 82,395 84,774
Short-term borrowings 2,173 2,017
Long-term borrowings 9,874 8,625
Derivatives 127 187
Reported Value Measurement [Member]    
Financial Assets:    
Cash and short term assets 1,758 2,725
Trading account securities 118 105
Available-for-sale securities 14,286 13,780
Debt Securities, Held-to-maturity 8,430 8,565
Other Securities 455 565
Loans held for sale 1,064 804
Net loans and direct financing leases 74,109 74,128
Derivatives 577 209
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 82,395 84,774
Short-term borrowings 2,173 2,017
Long-term borrowings 9,874 8,625
Derivatives 127 187
Estimate of Fair Value Measurement [Member]    
Financial Assets:    
Cash and short term assets 1,758 2,725
Trading account securities 118 105
Available-for-sale securities 14,286 13,780
Debt Securities, Held-to-maturity 8,584 8,286
Other Securities 455 565
Loans held for sale 1,067 806
Other securities (1) 54 22
Net loans and direct financing leases 75,234 73,668
Derivatives 577 209
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 82,398 84,731
Short-term borrowings 2,173 2,017
Long-term borrowings 10,075 8,718
Derivatives 127 187
Estimate of Fair Value Measurement [Member] | Level 1    
Financial Assets:    
Trading account securities 29 78
Available-for-sale securities 10 5
Debt Securities, Held-to-maturity 0 0
Loans held for sale 0 0
Other securities (1) 54 22
Net loans and direct financing leases 0 0
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 0 0
Short-term borrowings 0 1
Long-term borrowings 0 0
Estimate of Fair Value Measurement [Member] | Level 2    
Financial Assets:    
Trading account securities 89 27
Available-for-sale securities 11,127 10,610
Debt Securities, Held-to-maturity 8,584 8,286
Loans held for sale 963 613
Other securities (1) 0 0
Net loans and direct financing leases 80 49
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 75,707 76,922
Short-term borrowings 0 0
Long-term borrowings 9,435 8,158
Estimate of Fair Value Measurement [Member] | Level 3    
Financial Assets:    
Trading account securities 0 0
Available-for-sale securities 3,149 3,165
Debt Securities, Held-to-maturity 0 0
Loans held for sale 104 193
Other securities (1) 0 0
Net loans and direct financing leases 75,154 73,619
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 6,691 7,809
Short-term borrowings 2,173 2,016
Long-term borrowings 640 560
Fair Value, Recurring [Member]    
Financial Assets:    
Trading account securities 118 105
Available-for-sale securities 14,286 13,780
Derivatives 577 209
Financial Liabilities:    
Derivatives 127 187
Fair Value, Recurring [Member] | Level 1    
Financial Assets:    
Trading account securities 29 78
Available-for-sale securities 10 5
Fair Value, Recurring [Member] | Level 2    
Financial Assets:    
Trading account securities 89 27
Available-for-sale securities 11,127 10,610
Fair Value, Recurring [Member] | Level 3    
Financial Assets:    
Trading account securities 0 0
Available-for-sale securities 3,149 3,165
Other securities | Fair Value, Recurring [Member]    
Financial Assets:    
Trading account securities 29 77
Available-for-sale securities 4 4
Other securities | Fair Value, Recurring [Member] | Level 1    
Financial Assets:    
Trading account securities 29 77
Available-for-sale securities 0 0
Other securities | Fair Value, Recurring [Member] | Level 2    
Financial Assets:    
Trading account securities 0 0
Available-for-sale securities 4 4
Other securities | Fair Value, Recurring [Member] | Level 3    
Financial Assets:    
Trading account securities 0 0
Available-for-sale securities 0 0
Amortized Cost [Member] | Reported Value Measurement [Member]    
Financial Assets:    
Cash and short term assets 1,758 2,725
Debt Securities, Held-to-maturity 8,430 8,565
Other Securities 401 543
Net loans and direct financing leases 74,029 74,049
Financial Liabilities:    
Deposits (includes $0 and $872 respectively, classified as held-for-sale) 82,395 84,774
Short-term borrowings 2,173 2,017
Long-term borrowings 9,874 8,625
Fair Value Fair Value Option [Member] | Reported Value Measurement [Member]    
Financial Assets:    
Trading account securities 118 105
Available-for-sale securities 14,286 13,780
Other Securities 54 22
Loans held for sale 963 613
Net loans and direct financing leases 80 79
Derivatives 577 209
Financial Liabilities:    
Derivatives 127 187
LowerOfCostOrMarket [Member] | Reported Value Measurement [Member]    
Financial Assets:    
Loans held for sale $ 101 $ 191
[1]
(1)
Amounts represent loans for which Huntington has elected the fair value option. See Note 11 "Fair Values of Assets and Liabilities".