Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT (Details)

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LONG-TERM DEBT (Details) - Senior Notes - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2019
Jan. 29, 2019
Huntington National Bank Senior Note Due February 2021, No Coupon Rate [Member]    
Debt Instrument [Line Items]    
Debt face amount   $ 300
Debt percent of value 100.00%  
Debt Instrument, Redemption Price, Percentage 100.00%  
Huntington National Bank Senior Note Due April 2022, 3.125 Percent [Member]    
Debt Instrument [Line Items]    
Debt face amount   $ 500
Debt percent of value 99.909%  
Debt stated interest rate   3.125%
Debt Instrument, Redemption Price, Percentage 100.00%