Quarterly report pursuant to Section 13 or 15(d)

LOANS AND LEASES - TDRs (Details)

v3.20.1
LOANS AND LEASES - TDRs (Details)
$ in Millions
 3 Months Ended
Mar. 31, 2020
USD ($)
contract
Dec. 31, 2019
USD ($)
contract
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 1,386 1,327
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 88 $ 66
Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 1 1
Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 81 60
Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 6 5
Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Commercial and industrial | Commercial and Industrial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 140 115
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 62 $ 35
Commercial and industrial | Commercial and Industrial | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Commercial and industrial | Commercial and Industrial | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 62 35
Commercial and industrial | Commercial and Industrial | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Commercial and industrial | Commercial and Industrial | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Commercial and industrial | Commercial Real Estate    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 7 8
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 2 $ 9
Commercial and industrial | Commercial Real Estate | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Commercial and industrial | Commercial Real Estate | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2 9
Commercial and industrial | Commercial Real Estate | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Commercial and industrial | Commercial Real Estate | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Consumer | Automobile    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 798 744
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 8 $ 7
Consumer | Automobile | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Consumer | Automobile | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 6 5
Consumer | Automobile | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2 2
Consumer | Automobile | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Consumer | Home equity    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 63 104
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 3 $ 5
Consumer | Home equity | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Consumer | Home equity | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 1 3
Consumer | Home equity | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2 2
Consumer | Home equity | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Consumer | Residential Mortgage    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 101 76
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 11 $ 8
Consumer | Residential Mortgage | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Consumer | Residential Mortgage | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 9 8
Consumer | Residential Mortgage | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2 0
Consumer | Residential Mortgage | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Consumer | RV and marine    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 28 36
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 1 $ 1
Consumer | RV and marine | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Consumer | RV and marine | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 1 0
Consumer | RV and marine | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 1
Consumer | RV and marine | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0
Consumer | Other Consumer    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Number of Contracts | contract 249 244
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 1 $ 1
Consumer | Other Consumer | Interest rate reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 1 1
Consumer | Other Consumer | Amortization or maturity date change    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Consumer | Other Consumer | Chapter 7 bankruptcy    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0 0
Consumer | Other Consumer | Other    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0 $ 0