Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases - Consumer Real Estate - TDRs Entering Payment Default That Were Modified During the Preceding 12 Months (Details)

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Outstanding Loans and Leases - Consumer Real Estate - TDRs Entering Payment Default That Were Modified During the Preceding 12 Months (Details) - Consumer real estate
$ in Millions
 12 Months Ended
Dec. 31, 2015
USD ($)
payment
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months $ 4,207 $ 4,264 $ 6,961
Loans in default sold or disposed of by the company 1,800 2,000 2,400
Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 457 700 456
Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 287 726 1,121
Loans discharged in Chapter 7 bankruptcy      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 285 551 994
Trial modifications      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 3,178 2,287 4,390
Trial modification offers with no customer response $ 1,700    
Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Number of missing payments causing default | payment 3    
Threshold period considered past due after modification 90 days    
Trouble debt restructurings entered payment default that were modified during the preceding twelve months $ 3,950 4,122 6,911
Residential Mortgage | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 452 696 454
Residential Mortgage | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 263 714 1,117
Residential Mortgage | Loans discharged in Chapter 7 bankruptcy      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 238 481 964
Residential Mortgage | Trial modifications      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 2,997 2,231 4,376
Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 257 142 50
Home equity lines of credit | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 5 4 2
Home equity lines of credit | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 24 12 4
Home equity lines of credit | Loans discharged in Chapter 7 bankruptcy      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months 47 70 30
Home equity lines of credit | Trial modifications      
Financing Receivable, Modifications [Line Items]      
Trouble debt restructurings entered payment default that were modified during the preceding twelve months $ 181 $ 56 $ 14