Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Consumer Real Estate - Impaired Loans (Details)

v3.4.0.3
Outstanding Loans and Leases - Consumer Real Estate - Impaired Loans (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Financing Receivable, Impaired [Line Items]      
Loans and leases $ 901,113   $ 896,983
Chapter Seven Bankruptcy      
Financing Receivable, Impaired [Line Items]      
Loans and leases 1,700    
Nonperforming Financing Receivable | Chapter Seven Bankruptcy      
Financing Receivable, Impaired [Line Items]      
Loans and leases 741    
Federal Housing Administration | Fully Insured Loans | Chapter Seven Bankruptcy      
Financing Receivable, Impaired [Line Items]      
Loans and leases $ 675    
Consumer Real Estate      
Financing Receivable, Impaired [Line Items]      
Minimum period for modified payments under trial modification 3 months    
Maximum period for modified payments under trial modification 4 months    
Real estate acquired through foreclosure $ 421   444
Loans with formal foreclosure proceeding in process 5,300    
Real estate loans reclassified to foreclosed properties or other assets 416 $ 654  
Consumer Real Estate | Residential Mortgage      
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]      
With no recorded allowance 13,356   14,888
With an allowance recorded 5,811   6,624
Total 19,167   21,512
Impaired Financing Receivable, Recorded Investment [Abstract]      
With no recorded allowance 10,581   11,901
With an allowance recorded 5,675   6,471
Total 16,256   18,372
Related Allowance 348   399
Impaired Financing Receivable, Average Recorded Investment [Abstract]      
With no recorded allowance 11,418 15,393  
With an allowance recorded 6,072 7,586  
Total 17,490 22,979  
Impaired Financing Receivable, Interest Income, Accrual and Cash Basis Method [Abstract]      
With no recorded allowance 94 108  
With an allowance recorded 51 64  
Total $ 145 172  
Consumer Real Estate | Home equity      
Financing Receivable, Impaired [Line Items]      
Threshold period past due for write-off of financing receivable 180 days    
Impaired Financing Receivable, Unpaid Principal Balance [Abstract]      
With no recorded allowance $ 3,586   3,545
With an allowance recorded 1,036   1,047
Total 4,622   4,592
Impaired Financing Receivable, Recorded Investment [Abstract]      
With no recorded allowance 1,806   1,775
With an allowance recorded 913   911
Total 2,719   2,686
Related Allowance 202   $ 235
Impaired Financing Receivable, Average Recorded Investment [Abstract]      
With no recorded allowance 1,808 1,692  
With an allowance recorded 898 714  
Total 2,706 2,406  
Impaired Financing Receivable, Interest Income, Accrual and Cash Basis Method [Abstract]      
With no recorded allowance 13 25  
With an allowance recorded 6 7  
Total $ 19 $ 32