Quarterly report pursuant to Section 13 or 15(d)

Allowance for Credit Losses (Details 1)

v2.3.0.15
Allowance for Credit Losses (Details 1) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Dec. 31, 2009
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses $ 35,082 $ 37,312 $ 41,885 $ 43,581 $ 45,255 $ 47,988
Carrying value 921,307   937,119      
Allowance as a percentage of carrying value 3.81% [1]   4.47% [1]      
Residential Portfolio Segment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 20,732 20,953 19,252 18,436 18,838 16,329
Carrying value 405,793 [1]   409,062 [1]      
Allowance as a percentage of carrying value 5.11% [1]   4.71% [1]      
Residential Portfolio Segment [Member] | Impaired loans and troubled debt restructuring [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 1,954 [2],[3]   1,871 [2],[3]      
Carrying value 18,659 [3]   13,904 [3]      
Allowance as a percentage of carrying value 10.47% [3]   13.46% [3]      
Residential Portfolio Segment [Member] | Collectively evaluated for impairment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 10,539   10,964      
Carrying value 354,486 [1]   358,765 [1]      
Allowance as a percentage of carrying value 2.97% [1]   3.06% [1]      
Residential Portfolio Segment [Member] | Purchased credit-impaired loans [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 8,239   6,417      
Carrying value 32,648   36,393      
Allowance as a percentage of carrying value 25.24%   17.63%      
Consumer Portfolio Segment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 9,525 10,931 15,463 16,925 17,692 22,243
Carrying value 212,173 [1]   234,388 [1]      
Allowance as a percentage of carrying value 4.49% [1]   6.60% [1]      
Consumer Portfolio Segment [Member] | Impaired loans and troubled debt restructuring [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 2,908 [2],[3]   4,786 [2],[3]      
Carrying value 8,151 [3]   11,421 [3]      
Allowance as a percentage of carrying value 35.67% [3]   41.91% [3]      
Consumer Portfolio Segment [Member] | Collectively evaluated for impairment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 6,617   10,677      
Carrying value 204,022 [1]   222,967 [1]      
Allowance as a percentage of carrying value 3.24% [1]   4.79% [1]      
Commercial Portfolio Segment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 4,825 5,428 7,170 8,220 8,725 9,416
Carrying value 303,341 [1]   293,669 [1]      
Allowance as a percentage of carrying value 1.59% [1]   2.44% [1]      
Commercial Portfolio Segment [Member] | Impaired loans and troubled debt restructuring [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 798 [2],[3]   1,080 [2],[3]      
Carrying value 8,921 [3]   10,645 [3]      
Allowance as a percentage of carrying value 8.95% [3]   10.15% [3]      
Commercial Portfolio Segment [Member] | Collectively evaluated for impairment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 4,027   6,078      
Carrying value 294,420 [1]   282,820 [1]      
Allowance as a percentage of carrying value 1.37% [1]   2.15% [1]      
Commercial Portfolio Segment [Member] | Purchased credit-impaired loans [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses     12      
Carrying value     204      
Allowance as a percentage of carrying value     5.76%      
Impaired loans and troubled debt restructuring [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 5,660   7,737      
Carrying value 35,731   35,970      
Allowance as a percentage of carrying value 15.84% [3]   21.51% [3]      
Collectively evaluated for impairment [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 21,183   27,719      
Carrying value 852,928   864,552      
Allowance as a percentage of carrying value 2.48% [1]   3.21% [1]      
Purchased credit-impaired loans [Member]
           
Carrying value of outstanding loans and leases            
Allowance for loan and lease losses 8,239 8,400 6,429      
Carrying value $ 32,648   $ 36,597      
Allowance as a percentage of carrying value 25.24%   17.57%      
[1] Outstanding loan and lease balances and ratios do not include loans accounted for under the fair value option. Total loans accounted for under the fair value option were $11.2 billion and $3.3 billion at September 30, 2011 and December 31, 2010.
[2] Commercial impaired allowance for loan and lease losses includes $223 million and $445 million at September 30, 2011 and December 31, 2010 related to U.S. small business commercial renegotiated TDR loans.
[3] Impaired loans include nonperforming commercial loans and all TDRs, including both commercial and consumer TDRs. Impaired loans exclude nonperforming consumer loans unless they are classified as TDRs, and all consumer and commercial loans accounted for under the fair value option.