Annual report pursuant to Section 13 and 15(d)

AVAILABLE-FOR-SALE AND OTHER SECURITIES - Narrative (Details)

v3.3.1.900
AVAILABLE-FOR-SALE AND OTHER SECURITIES - Narrative (Details)
$ in Millions
Dec. 31, 2015
USD ($)
pool
Dec. 31, 2014
USD ($)
Schedule of Available-for-sale Securities [Line Items]    
Pledged investment securities to secure public and trust deposits, trading account liabilities, US Treasury demand notes and security repurchase agreements $ 2,600  
Number of pools of trust preferred securities | pool 8  
Number of pools of trust preferred securities, non-exclusive list | pool 7  
Nonmarketable equity securities    
Schedule of Available-for-sale Securities [Line Items]    
Stock issued by Federal Reserve Banks included in other securities $ 176 $ 175
Nonmarketable equity securities | Federal Home Loan Bank of Cincinnati    
Schedule of Available-for-sale Securities [Line Items]    
Federal home loan bank stock $ 157 $ 157