Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases (Details 7)

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Outstanding Loans and Leases (Details 7) (USD $)
In Millions
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2009
Remaining unpaid principal balance and carrying amount, excluding the valuation reserve, for purchased credit-impaired loans [Abstract]            
Loans and Leases Receivable, Allowance $ 37,312 $ 39,843 $ 41,885 $ 45,255 $ 46,835 $ 47,988
Countrywide Consumer Purchased Credit Impaired Loans [Member]
           
Remaining unpaid principal balance and carrying amount, excluding the valuation reserve, for purchased credit-impaired loans [Abstract]            
Unpaid principal balance 38,488 40,040 41,446      
Carrying value, with no record allowance 33,416 34,132 34,834      
Loans and Leases Receivable, Allowance 8,239 7,845 6,334      
Merrill Lynch Consumer Purchased Credit-Impaired Loans [Member]
           
Remaining unpaid principal balance and carrying amount, excluding the valuation reserve, for purchased credit-impaired loans [Abstract]            
Unpaid principal balance 1,582 1,629 1,698      
Carrying value, with no record allowance 1,474 1,508 1,559      
Loans and Leases Receivable, Allowance 154 136 83      
Merrill Lynch Commercial Purchased Credit-Impaired Loans [Member]
           
Remaining unpaid principal balance and carrying amount, excluding the valuation reserve, for purchased credit-impaired loans [Abstract]            
Unpaid principal balance 842 859 870      
Carrying value excluding valuation reserve 181 192 204      
Loans and Leases Receivable, Allowance $ 1 $ 1 $ 12