Quarterly report pursuant to Section 13 or 15(d)

Allowance and Carrying Value of Outstanding Loans and Leases by Portfolio Segment (Details)

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Allowance and Carrying Value of Outstanding Loans and Leases by Portfolio Segment (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2013
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2012
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2013
Collectively Evaluated For Impairment [Member]
Dec. 31, 2012
Collectively Evaluated For Impairment [Member]
Mar. 31, 2013
Purchased Credit-Impaired Loans [Member]
Mar. 31, 2012
Purchased Credit-Impaired Loans [Member]
Dec. 31, 2012
Purchased Credit-Impaired Loans [Member]
Mar. 31, 2013
Home Loans [Member]
Dec. 31, 2012
Home Loans [Member]
Mar. 31, 2012
Home Loans [Member]
Dec. 31, 2011
Home Loans [Member]
Mar. 31, 2013
Home Loans [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2012
Home Loans [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2013
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2012
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
Mar. 31, 2013
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
Dec. 31, 2012
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
Mar. 31, 2013
Credit Card and Other Consumer [Member]
Dec. 31, 2012
Credit Card and Other Consumer [Member]
Mar. 31, 2012
Credit Card and Other Consumer [Member]
Dec. 31, 2011
Credit Card and Other Consumer [Member]
Mar. 31, 2013
Credit Card and Other Consumer [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2012
Credit Card and Other Consumer [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2013
Credit Card and Other Consumer [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2012
Credit Card and Other Consumer [Member]
Collectively Evaluated For Impairment [Member]
Mar. 31, 2013
Commercial [Member]
Dec. 31, 2012
Commercial [Member]
Mar. 31, 2012
Commercial [Member]
Dec. 31, 2011
Commercial [Member]
Mar. 31, 2013
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2012
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2013
Commercial [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2012
Commercial [Member]
Collectively Evaluated For Impairment [Member]
Mar. 31, 2013
Small Business Commercial Loan [Member]
Dec. 31, 2012
Small Business Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]                                                                              
Allowance for Loan and Lease Losses, Loans Acquired                 $ (207) $ 487                                                          
Purchased Credit Impaired Loans, Write Offs (839)               839     839                   0               0                  
Carrying Value of Outstanding Loans and Leases [Abstract]                                                                              
Allowance for Loan and Lease Losses 22,441 24,179 32,211 33,783 3,106 [1],[2] 3,302 [1],[2] 14,845 15,341 4,490 [2]   5,536 13,438 14,933 20,973 21,079 1,795 [1],[2] 1,700 [1],[2] 7,153 7,697 4,490 5,536 5,874 6,140 7,664 8,569 903 [1],[2] 1,127 [1],[2] 4,971 5,013 3,129 3,106 3,574 4,135 408 [1],[2] 475 [1],[2] 2,721 2,631    
Carrying Value Gross of Valuation Allowance 902,772 [3],[4] 898,817 [3],[4]     41,212 [2],[3] 39,012 [2],[3] 831,896 [3],[4] 833,687 [3],[4] 29,664 [2]   26,118 360,142 [3],[4] 361,069 [3],[4]     33,581 [2],[3] 30,250 [2],[3] 296,897 [3],[4] 304,701 [3],[4] 29,664 26,118 183,881 [3],[4] 191,365 [3],[4]     3,272 [2],[3] 3,881 [2],[3] 180,609 [3],[4] 187,484 [3],[4] 358,749 [3],[4] 346,383 [3],[4]     4,359 [2],[3] 4,881 [2],[3] 354,390 [3],[4] 341,502 [3],[4]    
Valuation Allowance As A Percentage Of Carrying Value 2.49% [4] 2.69% [4]     7.54% [2] 8.46% [2] 1.78% [4] 1.84% [4] 15.14% [2]   21.20% 3.73% [4] 4.14% [4]     5.35% [2] 5.62% [2] 2.41% [4] 2.53% [4] 15.14% 21.20% 3.19% [4] 3.21% [4]     27.60% 29.04% [2] 2.75% [4] 2.67% [4] 0.87% [4] 0.90% [4]     9.36% [2] 9.74% [2] 0.77% [4] 0.77% [4]    
Financing Receivable, Modifications, Recorded Investment                                                                           80 97
Loans Receivable, Fair Value Disclosure $ 8,820 $ 9,002                                                       $ 7,779 [5] $ 7,997 [6]                
[1] Commercial impaired allowance for loan and lease losses includes $80 million and $97 million of renegotiated TDR loans related to U.S. small business commercial at March 31, 2013 and December 31, 2012.
[2] Impaired loans include nonperforming commercial loans and all TDRs, including both commercial and consumer TDRs. Impaired loans exclude nonperforming consumer loans unless they are TDRs, and all consumer and commercial loans accounted for under the fair value option.
[3] Amounts are presented gross of the allowance for loan and lease losses.
[4] Outstanding loan and lease balances and ratios do not include loans accounted for under the fair value option of $8.8 billion and $9.0 billion at March 31, 2013 and December 31, 2012.
[5] Consumer loans accounted for under the fair value option were residential mortgage loans of $1.0 billion. Commercial loans accounted for under the fair value option were U.S. commercial loans of $2.1 billion and non-U.S. commercial loans of $5.7 billion. For addition information, see Note 16 – Fair Value Measurements and Note 17 – Fair Value Option.
[6] Consumer loans accounted for under the fair value option were residential mortgage loans of $1.0 billion. Commercial loans accounted for under the fair value option were U.S. commercial loans of $2.3 billion and non-U.S. commercial loans of $5.7 billion. For additional information, see Note 16 – Fair Value Measurements and Note 17 – Fair Value Option.