Quarterly report pursuant to Section 13 or 15(d)

Allowance for Credit Losses (Details Textuals)

v2.3.0.15
Allowance for Credit Losses (Details Textuals) (USD $)
In Millions
3 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Dec. 31, 2009
Sep. 30, 2011
Commercial Portfolio Segment [Member]
Dec. 31, 2010
Commercial Portfolio Segment [Member]
Sep. 30, 2011
Consumer Portfolio Segment [Member]
Jun. 30, 2011
Consumer Portfolio Segment [Member]
Dec. 31, 2010
Consumer Portfolio Segment [Member]
Sep. 30, 2010
Consumer Portfolio Segment [Member]
Jun. 30, 2010
Consumer Portfolio Segment [Member]
Dec. 31, 2009
Consumer Portfolio Segment [Member]
Sep. 30, 2011
Small Business Commercial Loan [Member]
Dec. 31, 2010
Small Business Commercial Loan [Member]
Sep. 30, 2010
Purchased Credit Impaired Loans [Member]
Sep. 30, 2011
Purchased Credit Impaired Loans [Member]
Sep. 30, 2010
Purchased Credit Impaired Loans [Member]
Jun. 30, 2011
Purchased Credit Impaired Loans [Member]
Dec. 31, 2010
Purchased Credit Impaired Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]                                          
Transfer of Reserves to Loans Held For Sale Related to Business Segment Divestiture                 $ 463                        
Allowance for Credit Losses (Textuals) [Abstract]                                          
Allowance for Loan and Lease Losses, Loans Acquired                                 281 2,000 1,400    
Allowance for loan and lease losses associated with purchased credit-impaired loan portfolio 35,082 37,312 41,885 43,581 45,255 47,988     9,525 10,931 15,463 16,925 17,692 22,243       8,239   8,400 6,429
U.S. small business commercial renegotiated TDR loans                             223 445          
Loans Receivable, Fair Value Disclosure $ 11,224   $ 3,321       $ 6,483 $ 3,321