Quarterly report pursuant to Section 13 or 15(d)

VIEs - Trust Preferred Securities (Details)

v3.21.1
VIEs - Trust Preferred Securities (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2021
USD ($)
Variable Interest Entity, Not Primary Beneficiary  
Variable Interest Entity [Line Items]  
Long-term Debt, Gross $ 253
Investment in unconsolidated subsidiary $ 14
Huntington Capital I [Member] | London Interbank Offered Rate (LIBOR)  
Variable Interest Entity [Line Items]  
Basis spread on variable rate 0.70%
Huntington Capital I [Member] | Variable Interest Entity, Not Primary Beneficiary  
Variable Interest Entity [Line Items]  
Rate 0.81%
Long-term Debt, Gross $ 70
Investment in unconsolidated subsidiary $ 6
Huntington Capital II | London Interbank Offered Rate (LIBOR)  
Variable Interest Entity [Line Items]  
Basis spread on variable rate 0.625%
Huntington Capital II | Variable Interest Entity, Not Primary Beneficiary  
Variable Interest Entity [Line Items]  
Rate 0.74%
Long-term Debt, Gross $ 32
Investment in unconsolidated subsidiary $ 3
Sky Financial Capital Trust III | London Interbank Offered Rate (LIBOR)  
Variable Interest Entity [Line Items]  
Basis spread on variable rate 1.40%
Sky Financial Capital Trust III | Variable Interest Entity, Not Primary Beneficiary  
Variable Interest Entity [Line Items]  
Rate 1.51%
Long-term Debt, Gross $ 72
Investment in unconsolidated subsidiary $ 2
Sky Financial Capital Trust IV | London Interbank Offered Rate (LIBOR)  
Variable Interest Entity [Line Items]  
Basis spread on variable rate 1.33%
Sky Financial Capital Trust IV | Variable Interest Entity, Not Primary Beneficiary  
Variable Interest Entity [Line Items]  
Rate 1.51%
Long-term Debt, Gross $ 74
Investment in unconsolidated subsidiary $ 2
Camco Financial Trust [Member] | Variable Interest Entity, Not Primary Beneficiary  
Variable Interest Entity [Line Items]  
Rate 1.44%
Long-term Debt, Gross $ 5
Investment in unconsolidated subsidiary $ 1