Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Narrative (Details)

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Outstanding Loans and Leases - Narrative (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Loans and leases including disposal group $ 915,747 $ 915,897
Allowance included in assets of business held for sale 242 243
Credit card and other consumer    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Allowance included in assets of business held for sale 242 243
Credit Card Receivable | Non United States | Credit card and other consumer    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Loans and leases including disposal group 9,505 9,214
Credit Card Receivable | Carrying Value | Non United States | Credit card and other consumer    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Loans and leases including disposal group $ 9,505 $ 9,214