Quarterly report pursuant to Section 13 or 15(d)

NON-INTEREST INCOME - Disaggregation by Segment (Details)

v3.10.0.1
NON-INTEREST INCOME - Disaggregation by Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers $ 223   $ 654  
Noninterest income within the scope of other GAAP topics 119   338  
Noninterest income 342 $ 330 992 $ 967
Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 93   270  
Cards and payment processing income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 53   154  
Trust and investment management services        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 42   128  
Insurance income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 19   61  
Other income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 16   41  
Operating Segments | Consumer And Business Banking [Member]        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 150   436  
Noninterest income within the scope of other GAAP topics 42   117  
Noninterest income 192 189 553 544
Operating Segments | Consumer And Business Banking [Member] | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 75   215  
Operating Segments | Consumer And Business Banking [Member] | Cards and payment processing income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 50   146  
Operating Segments | Consumer And Business Banking [Member] | Trust and investment management services        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 7   19  
Operating Segments | Consumer And Business Banking [Member] | Insurance income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 8   26  
Operating Segments | Consumer And Business Banking [Member] | Other income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 10   30  
Operating Segments | Commercial Banking [Member]        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 23   65  
Noninterest income within the scope of other GAAP topics 56   163  
Noninterest income 79 67 228 201
Operating Segments | Commercial Banking [Member] | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 16   48  
Operating Segments | Commercial Banking [Member] | Cards and payment processing income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 3   8  
Operating Segments | Commercial Banking [Member] | Trust and investment management services        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 1   3  
Operating Segments | Commercial Banking [Member] | Insurance income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 1   3  
Operating Segments | Commercial Banking [Member] | Other income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 2   3  
Operating Segments | Vehicle Finance [Member]        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 2   6  
Noninterest income within the scope of other GAAP topics 0   2  
Noninterest income 2 3 8 11
Operating Segments | Vehicle Finance [Member] | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 1   4  
Operating Segments | Vehicle Finance [Member] | Cards and payment processing income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Operating Segments | Vehicle Finance [Member] | Trust and investment management services        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Operating Segments | Vehicle Finance [Member] | Insurance income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Operating Segments | Vehicle Finance [Member] | Other income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 1   2  
Operating Segments | Regional Banking and The Huntington Private Client Group [Member]        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 47   144  
Noninterest income within the scope of other GAAP topics 0   1  
Noninterest income 47 46 145 141
Operating Segments | Regional Banking and The Huntington Private Client Group [Member] | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 1   3  
Operating Segments | Regional Banking and The Huntington Private Client Group [Member] | Cards and payment processing income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Operating Segments | Regional Banking and The Huntington Private Client Group [Member] | Trust and investment management services        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 34   106  
Operating Segments | Regional Banking and The Huntington Private Client Group [Member] | Insurance income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 10   31  
Operating Segments | Regional Banking and The Huntington Private Client Group [Member] | Other income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 2   4  
Treasury / Other        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 1   3  
Noninterest income within the scope of other GAAP topics 21   55  
Noninterest income 22 $ 25 58 $ 70
Treasury / Other | Service charges on deposit accounts        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Treasury / Other | Cards and payment processing income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Treasury / Other | Trust and investment management services        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   0  
Treasury / Other | Insurance income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers 0   1  
Treasury / Other | Other income        
Disaggregation of Revenue [Line Items]        
Noninterest income from contracts with customers $ 1   $ 2