v2.4.0.6
Loans and Allowance for Credit Losses, by Delinquency Status, Commercial (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Dec. 31, 2007
Financing Receivable, Recorded Investment, Aging [Abstract]          
90+ DPD and accruing $ 22,569 $ 18,488      
Nonaccrual loans 21,304 26,242      
Purchased Credit Impaired Loans 36,719 41,430 51,705 58,797  
Loans 769,631 757,267 782,770 864,830 382,195
Commercial and Industrial Loans [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Nonaccrual loans 2,142 3,213      
Purchased Credit Impaired Loans 399 718 1,911 4,580  
Loans 167,216 151,284 158,352 202,469 90,468
Commercial Real Estate Mortgage [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Nonaccrual loans 4,085 5,227      
Purchased Credit Impaired Loans 3,270 2,855 4,137 5,803  
Loans 105,975 99,435 97,527 94,923 36,747
Commercial Real Estate Construction [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Nonaccrual loans 1,890 2,676      
Purchased Credit Impaired Loans 1,745 2,949 5,207 6,462  
Loans 19,382 25,333 36,978 42,861 18,854
Lease Financing [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Nonaccrual loans 53 108      
Purchased Credit Impaired Loans 0 0      
Loans 13,117 13,094 14,210 15,829 6,772
Foreign Loans [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Nonaccrual loans 47 127      
Purchased Credit Impaired Loans 1,353 1,413 1,733 1,859  
Loans 39,760 32,912 29,398 33,882 7,441
Total Commercial [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Nonaccrual loans 8,217 11,351      
Purchased Credit Impaired Loans 6,767 7,935 12,988 18,704  
Loans 345,450 322,058 336,465 389,964 160,282
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial and Industrial Loans [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD and still accruing 163,583 146,135      
30-89 DPD and still accruing 939 910      
90+ DPD and accruing 153 308      
Nonaccrual loans 2,142 3,213      
Loans, excluding Purchased Credit Impaired Loans 166,817 150,566      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Real Estate Mortgage [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD and still accruing 97,410 90,233      
30-89 DPD and still accruing 954 1,016      
90+ DPD and accruing 256 104      
Nonaccrual loans 4,085 5,227      
Loans, excluding Purchased Credit Impaired Loans 102,705 96,580      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Commercial Real Estate Construction [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD and still accruing 15,471 19,005      
30-89 DPD and still accruing 187 510      
90+ DPD and accruing 89 193      
Nonaccrual loans 1,890 2,676      
Loans, excluding Purchased Credit Impaired Loans 17,637 22,384      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Lease Financing [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD and still accruing 12,934 12,927      
30-89 DPD and still accruing 130 59      
90+ DPD and accruing 0 0      
Nonaccrual loans 53 108      
Loans, excluding Purchased Credit Impaired Loans 13,117 13,094      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Foreign Loans [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD and still accruing 38,122 31,350      
30-89 DPD and still accruing 232 0      
90+ DPD and accruing 6 22      
Nonaccrual loans 47 127      
Loans, excluding Purchased Credit Impaired Loans 38,407 31,499      
Loans Excluding Certain Loans Acquired In Transfer With Evidence Of Credit Deterioration [Member] | Total Commercial [Member]
          
Financing Receivable, Recorded Investment, Aging [Abstract]          
Current-29 DPD and still accruing 327,520 299,650      
30-89 DPD and still accruing 2,442 2,495      
90+ DPD and accruing 504 627      
Nonaccrual loans 8,217 11,351      
Loans, excluding Purchased Credit Impaired Loans $ 338,683 $ 314,123