Current report filing

Outstanding Loans and Leases - Commercial Loans TDRs (Details)

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Outstanding Loans and Leases - Commercial Loans TDRs (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Home Loans [Member]
Dec. 31, 2011
Commercial Portfolio Segment [Member]
Dec. 31, 2011
Home Equity [Member]
Home Loans [Member]
Dec. 31, 2011
Commercial Financing Receivable [Member]
U.S. Commercial
Commercial Portfolio Segment [Member]
Dec. 31, 2011
Commercial Financing Receivable [Member]
Non-U.S. Commercial
Commercial Portfolio Segment [Member]
Dec. 31, 2011
Commercial Real Estate Receivable [Member]
Commercial Portfolio Segment [Member]
Dec. 31, 2011
Small Business Commercial Receivable [Member]
Commercial Portfolio Segment [Member]
Dec. 31, 2011
Accounting Standards Update 2011-02 [Member]
Commercial Portfolio Segment [Member]
Sep. 30, 2011
Accounting Standards Update 2011-02 [Member]
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]                  
Financing Receivable, Modifications, Recorded Investment               $ 1,100 $ 1,100
Unpaid Principal Balance 11,281 3,087 899 1,381 44 1,604 58    
Carrying Value 9,411 [1] 2,647 480 [1] 1,211 44 1,333 59    
Net Charge-Offs 375 236 184 74   152 10    
Financing Receivable, Modifications, Payment Default, Carrying Value       $ 164   $ 446 $ 68    
[1] Includes other modifications such as term or payment extensions and repayment plans.