v3.19.3.a.u2
Allowance For Credit Losses (Impaired Financing Receivables) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 1,083 $ 1,043  
Impaired Financing Receivable Chargeoffs And Payments Applied 131 109  
Impaired Financing Receivable, Recorded Investment 952 934  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 77 130  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 875 804  
Impaired Financing Receivable, Related Allowance $ 153 $ 132  
Impaired Financing Receivable Coverage Percentage 26.20% 23.10%  
Impaired Financing Receivable, Average Recorded Investment $ 938 $ 1,160 $ 1,839
Impaired Financing Receivable, Interest Income, Accrual Method 26 38 53
Commercial And Industrial [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 537 468  
Impaired Financing Receivable Chargeoffs And Payments Applied 98 77  
Impaired Financing Receivable, Recorded Investment 439 391  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 66 113  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 373 278  
Impaired Financing Receivable, Related Allowance $ 94 $ 76  
Impaired Financing Receivable Coverage Percentage 35.80% 32.70%  
Impaired Financing Receivable, Average Recorded Investment $ 409 $ 486 747
Impaired Financing Receivable, Interest Income, Accrual Method 5 9 12
Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 98 102  
Impaired Financing Receivable Chargeoffs And Payments Applied 11 11  
Impaired Financing Receivable, Recorded Investment 87 91  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 8 13  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 79 78  
Impaired Financing Receivable, Related Allowance $ 21 $ 25  
Impaired Financing Receivable Coverage Percentage 32.70% 35.30%  
Impaired Financing Receivable, Average Recorded Investment $ 88 $ 131 226
Impaired Financing Receivable, Interest Income, Accrual Method 1 6 5
Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 13 9  
Impaired Financing Receivable Chargeoffs And Payments Applied 2 1  
Impaired Financing Receivable, Recorded Investment 11 8  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 3 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 8 8  
Impaired Financing Receivable, Related Allowance $ 5 $ 3  
Impaired Financing Receivable Coverage Percentage 53.80% 44.40%  
Impaired Financing Receivable, Average Recorded Investment $ 14 $ 7 5
Impaired Financing Receivable, Interest Income, Accrual Method 0 0 0
Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 648 579  
Impaired Financing Receivable Chargeoffs And Payments Applied 111 89  
Impaired Financing Receivable, Recorded Investment 537 490  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 77 126  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 460 364  
Impaired Financing Receivable, Related Allowance $ 120 $ 104  
Impaired Financing Receivable Coverage Percentage 35.60% 33.30%  
Impaired Financing Receivable, Average Recorded Investment $ 511 $ 624 978
Impaired Financing Receivable, Interest Income, Accrual Method 6 15 17
Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 27 26  
Impaired Financing Receivable Chargeoffs And Payments Applied 3 1  
Impaired Financing Receivable, Recorded Investment 24 25  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 4  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 24 21  
Impaired Financing Receivable, Related Allowance $ 2 $ 2  
Impaired Financing Receivable Coverage Percentage 18.50% 11.50%  
Impaired Financing Receivable, Average Recorded Investment $ 22 $ 61 81
Impaired Financing Receivable, Interest Income, Accrual Method 2 3 4
Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 10    
Impaired Financing Receivable Chargeoffs And Payments Applied 0    
Impaired Financing Receivable, Recorded Investment 10    
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0    
Impaired Financing Receivable, with Related Allowance, Recorded Investment 10    
Impaired Financing Receivable, Related Allowance $ 2    
Impaired Financing Receivable Coverage Percentage 20.00%    
Impaired Financing Receivable, Average Recorded Investment $ 5 7 39
Impaired Financing Receivable, Interest Income, Accrual Method 0 0 2
Total Investor Real Estate [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 37 26  
Impaired Financing Receivable Chargeoffs And Payments Applied 3 1  
Impaired Financing Receivable, Recorded Investment 34 25  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 4  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 34 21  
Impaired Financing Receivable, Related Allowance $ 4 $ 2  
Impaired Financing Receivable Coverage Percentage 18.90% 11.50%  
Impaired Financing Receivable, Average Recorded Investment $ 27 $ 68 120
Impaired Financing Receivable, Interest Income, Accrual Method 2 3 6
Residential First Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 233 225  
Impaired Financing Receivable Chargeoffs And Payments Applied 16 17  
Impaired Financing Receivable, Recorded Investment 217 208  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 217 208  
Impaired Financing Receivable, Related Allowance $ 22 $ 20  
Impaired Financing Receivable Coverage Percentage 16.30% 16.40%  
Impaired Financing Receivable, Average Recorded Investment $ 214 $ 230 450
Impaired Financing Receivable, Interest Income, Accrual Method 8 8 15
Home Equity [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 160 206  
Impaired Financing Receivable Chargeoffs And Payments Applied 1 2  
Impaired Financing Receivable, Recorded Investment 159 204  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 159 204  
Impaired Financing Receivable, Related Allowance $ 7 $ 6  
Impaired Financing Receivable Coverage Percentage 5.00% 3.90%  
Impaired Financing Receivable, Average Recorded Investment $ 180 $ 230 280
Impaired Financing Receivable, Interest Income, Accrual Method 10 12 14
Indirect-vehicles [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Average Recorded Investment 0 0 0
Impaired Financing Receivable, Interest Income, Accrual Method 0 0 0
Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 1 1  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, Recorded Investment 1 1  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 1 1  
Impaired Financing Receivable, Related Allowance $ 0 $ 0  
Impaired Financing Receivable Coverage Percentage 0.00% 0.00%  
Impaired Financing Receivable, Average Recorded Investment $ 1 $ 1 2
Impaired Financing Receivable, Interest Income, Accrual Method 0 0 0
Other Consumer [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 4 6  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, Recorded Investment 4 6  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 4 6  
Impaired Financing Receivable, Related Allowance $ 0 $ 0  
Impaired Financing Receivable Coverage Percentage 0.00% 0.00%  
Impaired Financing Receivable, Average Recorded Investment $ 5 $ 7 9
Impaired Financing Receivable, Interest Income, Accrual Method 0 0 1
Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 398 438  
Impaired Financing Receivable Chargeoffs And Payments Applied 17 19  
Impaired Financing Receivable, Recorded Investment 381 419  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 381 419  
Impaired Financing Receivable, Related Allowance $ 29 $ 26  
Impaired Financing Receivable Coverage Percentage 11.60% 10.30%  
Impaired Financing Receivable, Average Recorded Investment $ 400 $ 468 741
Impaired Financing Receivable, Interest Income, Accrual Method 18 20 $ 30
Non-Accrual [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance 571 522  
Impaired Financing Receivable Chargeoffs And Payments Applied 117 97  
Impaired Financing Receivable, Recorded Investment 454 425  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 77 130  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 377 295  
Impaired Financing Receivable, Related Allowance $ 108 $ 91  
Impaired Financing Receivable Coverage Percentage 39.40% 36.00%  
Non-Accrual [Member] | Commercial And Industrial [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 444 $ 384  
Impaired Financing Receivable Chargeoffs And Payments Applied 97 77  
Impaired Financing Receivable, Recorded Investment 347 307  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 66 113  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 281 194  
Impaired Financing Receivable, Related Allowance $ 80 $ 62  
Impaired Financing Receivable Coverage Percentage 39.90% 36.20%  
Non-Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 83 $ 76  
Impaired Financing Receivable Chargeoffs And Payments Applied 10 9  
Impaired Financing Receivable, Recorded Investment 73 67  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 8 13  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 65 54  
Impaired Financing Receivable, Related Allowance $ 20 $ 23  
Impaired Financing Receivable Coverage Percentage 36.10% 42.10%  
Non-Accrual [Member] | Commercial Real Estate Construction - Owner-Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 13 $ 9  
Impaired Financing Receivable Chargeoffs And Payments Applied 2 1  
Impaired Financing Receivable, Recorded Investment 11 8  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 3 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 8 8  
Impaired Financing Receivable, Related Allowance $ 5 $ 3  
Impaired Financing Receivable Coverage Percentage 53.80% 44.40%  
Non-Accrual [Member] | Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 540 $ 469  
Impaired Financing Receivable Chargeoffs And Payments Applied 109 87  
Impaired Financing Receivable, Recorded Investment 431 382  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 77 126  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 354 256  
Impaired Financing Receivable, Related Allowance $ 105 $ 88  
Impaired Financing Receivable Coverage Percentage 39.60% 37.30%  
Non-Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 2 $ 11  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, Recorded Investment 2 11  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 4  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 2 7  
Impaired Financing Receivable, Related Allowance $ 1 $ 1  
Impaired Financing Receivable Coverage Percentage 50.00% 9.10%  
Non-Accrual [Member] | Total Investor Real Estate [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 2 $ 11  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, Recorded Investment 2 11  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 4  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 2 7  
Impaired Financing Receivable, Related Allowance $ 1 $ 1  
Impaired Financing Receivable Coverage Percentage 50.00% 9.10%  
Non-Accrual [Member] | Residential First Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 23 $ 31  
Impaired Financing Receivable Chargeoffs And Payments Applied 7 8  
Impaired Financing Receivable, Recorded Investment 16 23  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 16 23  
Impaired Financing Receivable, Related Allowance $ 2 $ 2  
Impaired Financing Receivable Coverage Percentage 39.10% 32.30%  
Non-Accrual [Member] | Home Equity [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 6 $ 11  
Impaired Financing Receivable Chargeoffs And Payments Applied 1 2  
Impaired Financing Receivable, Recorded Investment 5 9  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 5 9  
Impaired Financing Receivable, Related Allowance $ 0 $ 0  
Impaired Financing Receivable Coverage Percentage 16.70% 18.20%  
Non-Accrual [Member] | Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 29 $ 42  
Impaired Financing Receivable Chargeoffs And Payments Applied 8 10  
Impaired Financing Receivable, Recorded Investment 21 32  
Impaired Financing Receivable, with No Related Allowance, Recorded Investment 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 21 32  
Impaired Financing Receivable, Related Allowance $ 2 $ 2  
Impaired Financing Receivable Coverage Percentage 34.50% 28.60%  
Accrual [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 512 $ 521  
Impaired Financing Receivable Chargeoffs And Payments Applied 14 12  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 498 509  
Impaired Financing Receivable, Related Allowance $ 45 $ 41  
Impaired Financing Receivable Coverage Percentage 11.50% 10.20%  
Accrual [Member] | Commercial And Industrial [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 93 $ 84  
Impaired Financing Receivable Chargeoffs And Payments Applied 1 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 92 84  
Impaired Financing Receivable, Related Allowance $ 14 $ 14  
Impaired Financing Receivable Coverage Percentage 16.10% 16.70%  
Accrual [Member] | Commercial Real Estate Mortgage - Owner-Occupied [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 15 $ 26  
Impaired Financing Receivable Chargeoffs And Payments Applied 1 2  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 14 24  
Impaired Financing Receivable, Related Allowance $ 1 $ 2  
Impaired Financing Receivable Coverage Percentage 13.30% 15.40%  
Accrual [Member] | Commercial Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 108 $ 110  
Impaired Financing Receivable Chargeoffs And Payments Applied 2 2  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 106 108  
Impaired Financing Receivable, Related Allowance $ 15 $ 16  
Impaired Financing Receivable Coverage Percentage 15.70% 16.40%  
Accrual [Member] | Commercial Investor Real Estate Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 25 $ 15  
Impaired Financing Receivable Chargeoffs And Payments Applied 3 1  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 22 14  
Impaired Financing Receivable, Related Allowance $ 1 $ 1  
Impaired Financing Receivable Coverage Percentage 16.00% 13.30%  
Accrual [Member] | Commercial Investor Real Estate Construction [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 10    
Impaired Financing Receivable Chargeoffs And Payments Applied 0    
Impaired Financing Receivable, with Related Allowance, Recorded Investment 10    
Impaired Financing Receivable, Related Allowance $ 2    
Impaired Financing Receivable Coverage Percentage 20.00%    
Accrual [Member] | Total Investor Real Estate [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 35 $ 15  
Impaired Financing Receivable Chargeoffs And Payments Applied 3 1  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 32 14  
Impaired Financing Receivable, Related Allowance $ 3 $ 1  
Impaired Financing Receivable Coverage Percentage 17.10% 13.30%  
Accrual [Member] | Residential First Mortgage [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 210 $ 194  
Impaired Financing Receivable Chargeoffs And Payments Applied 9 9  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 201 185  
Impaired Financing Receivable, Related Allowance $ 20 $ 18  
Impaired Financing Receivable Coverage Percentage 13.80% 13.90%  
Accrual [Member] | Home Equity [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 154 $ 195  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 154 195  
Impaired Financing Receivable, Related Allowance $ 7 $ 6  
Impaired Financing Receivable Coverage Percentage 4.50% 3.10%  
Accrual [Member] | Consumer Credit Card Financing Receivable [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 1 $ 1  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 1 1  
Impaired Financing Receivable, Related Allowance $ 0 $ 0  
Impaired Financing Receivable Coverage Percentage 0.00% 0.00%  
Accrual [Member] | Other Consumer [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 4 $ 6  
Impaired Financing Receivable Chargeoffs And Payments Applied 0 0  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 4 6  
Impaired Financing Receivable, Related Allowance $ 0 $ 0  
Impaired Financing Receivable Coverage Percentage 0.00% 0.00%  
Accrual [Member] | Consumer Portfolio Segment [Member]      
Financing Receivable, Impaired [Line Items]      
Impaired Financing Receivable, Unpaid Principal Balance $ 369 $ 396  
Impaired Financing Receivable Chargeoffs And Payments Applied 9 9  
Impaired Financing Receivable, with Related Allowance, Recorded Investment 360 387  
Impaired Financing Receivable, Related Allowance $ 27 $ 24  
Impaired Financing Receivable Coverage Percentage 9.80% 8.30%