Quarterly report pursuant to Section 13 or 15(d)

LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - TDRs (Details)

v3.19.2
LOANS / LEASES AND ALLOWANCE FOR CREDIT LOSSES - TDRs (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
contract
Mar. 31, 2019
USD ($)
Jun. 30, 2018
USD ($)
contract
Jun. 30, 2019
USD ($)
contract
Jun. 30, 2018
USD ($)
contract
Financing Receivable, Modifications [Line Items]          
Document Period End Date       Jun. 30, 2019  
New Troubled Debt Restructuring, Number of Contracts | contract 1,295   1,741 2,622 3,356
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 65   $ 245 $ 129 $ 398
New Troubled Debt Restructuring, Financial effects of modification   $ (1) 7 3 10
Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2   4 3 4
Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 57   237 117 382
Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 6   4 9 11
Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 1
Commercial | Commercial and Industrial          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 101   269 216 510
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 39   $ 171 $ 74 $ 267
Commercial | Commercial and Industrial | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Commercial | Commercial and Industrial | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 39   171 74 267
Commercial | Commercial and Industrial | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Commercial | Commercial and Industrial | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 0
Commercial | Commercial Real Estate          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 6   38 14 86
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 2   $ 43 $ 11 $ 74
Commercial | Commercial Real Estate | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Commercial | Commercial Real Estate | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2   43 11 74
Commercial | Commercial Real Estate | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Commercial | Commercial Real Estate | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 0
Consumer | Automobile          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 650   613 1,394 1,240
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 6   $ 5 $ 13 $ 11
Consumer | Automobile | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | Automobile | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 4   3 9 7
Consumer | Automobile | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2   2 4 4
Consumer | Automobile | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 0
Consumer | Home Equity          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 68   169 172 325
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 3   $ 10 $ 8 $ 20
Consumer | Home Equity | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | Home Equity | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2   8 5 14
Consumer | Home Equity | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 1   2 3 5
Consumer | Home Equity | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 1
Consumer | Residential Mortgage          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 96   119 172 202
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 11   $ 12 $ 19 $ 21
Consumer | Residential Mortgage | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | Residential Mortgage | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 10   12 18 20
Consumer | Residential Mortgage | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 1   0 1 1
Consumer | Residential Mortgage | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 0
Consumer | RV and Marine FInance          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 31   40 67 59
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 2   $ 0 $ 1 $ 1
Consumer | RV and Marine FInance | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | RV and Marine FInance | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | RV and Marine FInance | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2   0 1 1
Consumer | RV and Marine FInance | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 0
Consumer | Other Consumer          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Number of Contracts | contract 343   493 587 934
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 2   $ 4 $ 3 $ 4
Consumer | Other Consumer | Interest rate reduction          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 2   4 3 4
Consumer | Other Consumer | Amortization or maturity date change          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | Other Consumer | Chapter 7 bankruptcy          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance 0   0 0 0
Consumer | Other Consumer | Other          
Financing Receivable, Modifications [Line Items]          
New Troubled Debt Restructuring, Post-modification Outstanding Ending Balance $ 0   $ 0 $ 0 $ 0