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 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2012
Jun. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Sep. 30, 2012
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Impaired Loans and Troubled Debt Restructurings [Member]
Sep. 30, 2012
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Collectively Evaluated For Impairment [Member]
Sep. 30, 2012
Purchased Credit-Impaired Loans [Member]
Sep. 30, 2011
Purchased Credit-Impaired Loans [Member]
Sep. 30, 2012
Purchased Credit-Impaired Loans [Member]
Sep. 30, 2011
Purchased Credit-Impaired Loans [Member]
Dec. 31, 2011
Purchased Credit-Impaired Loans [Member]
Sep. 30, 2012
Home Loans [Member]
Sep. 30, 2012
Home Loans [Member]
Jun. 30, 2012
Home Loans [Member]
Dec. 31, 2011
Home Loans [Member]
Sep. 30, 2011
Home Loans [Member]
Jun. 30, 2011
Home Loans [Member]
Dec. 31, 2010
Home Loans [Member]
Sep. 30, 2012
Home Loans [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Home Loans [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Sep. 30, 2012
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
Sep. 30, 2012
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
Dec. 31, 2011
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
Sep. 30, 2012
Credit Card and Other Consumer [Member]
Sep. 30, 2012
Credit Card and Other Consumer [Member]
Jun. 30, 2012
Credit Card and Other Consumer [Member]
Dec. 31, 2011
Credit Card and Other Consumer [Member]
Sep. 30, 2011
Credit Card and Other Consumer [Member]
Jun. 30, 2011
Credit Card and Other Consumer [Member]
Dec. 31, 2010
Credit Card and Other Consumer [Member]
Sep. 30, 2012
Credit Card and Other Consumer [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Credit Card and Other Consumer [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Sep. 30, 2012
Credit Card and Other Consumer [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Credit Card and Other Consumer [Member]
Collectively Evaluated For Impairment [Member]
Sep. 30, 2012
Commercial [Member]
Sep. 30, 2012
Commercial [Member]
Jun. 30, 2012
Commercial [Member]
Dec. 31, 2011
Commercial [Member]
Sep. 30, 2011
Commercial [Member]
Jun. 30, 2011
Commercial [Member]
Dec. 31, 2010
Commercial [Member]
Sep. 30, 2012
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Sep. 30, 2012
Commercial [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Commercial [Member]
Collectively Evaluated For Impairment [Member]
Sep. 30, 2012
Small Business Commercial Loan [Member]
Dec. 31, 2011
Small Business Commercial Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]                                                                                                          
Allowance for Loan and Lease Losses, Loans Acquired                       $ (166) $ 0 $ 327 $ 2,000                                                                            
Purchased Credit Impaired Loans, Write Offs (1,705) (1,705)                             1,705 1,705                       0 0                   0 0                      
Loans forgiven in National Mortgage Settlement                                 1,600                                                                        
Carrying Value of Outstanding Loans and Leases [Abstract]                                                                                                          
Allowance for Loan and Lease Losses 26,233 26,233 30,288 33,783 35,082 37,312 41,885 3,503 [1],[2] 4,901 [1],[2] 15,649 20,423 7,081 [2]   7,081 [2]   8,459 16,534 16,534 19,964 21,079 20,732 20,953 19,252 1,689 [1],[2] 1,946 [1],[2] 7,764 10,674 7,081 8,459 6,521 6,521 7,024 8,569 9,525 10,931 15,463 1,423 [1],[2] 2,410 [1],[2] 5,098 6,159 3,178 3,178 3,300 4,135 4,825 5,428 7,170 391 [1],[2] 545 [1],[2] 2,787 3,590    
Carrying Value Gross of Valuation Allowance 885,397 [3],[4] 885,397 [3],[4]   917,396 [3],[4]       37,777 [2],[3] 36,675 [2],[3] 819,772 [3],[4] 848,920 [3],[4] 27,848 [2]   27,848 [2]   31,801 369,476 [3],[4] 369,476 [3],[4]   398,084 [3],[4]       27,576 [2],[3] 21,462 [2],[3] 314,052 [3],[4] 344,821 [3],[4] 27,848 31,801 191,600 [3],[4] 191,600 [3],[4]   209,110 [3],[4]       4,487 [2],[3] 7,100 [2],[3] 187,113 [3],[4] 202,010 [3],[4] 324,321 [3],[4] 324,321 [3],[4]   310,202 [3],[4]       5,714 [2],[3] 8,113 [2],[3] 318,607 [3],[4] 302,089 [3],[4]    
Valuation Allowance As A Percentage Of Carrying Value 2.96% [4] 2.96% [4]   3.68% [4]       9.27% [2] 13.36% [2] 1.91% [4] 2.41% [4] 25.43% [2]   25.43% [2]   26.60% 4.47% [4] 4.47% [4]   5.30% [4]       6.12% [2] 9.07% [2] 2.47% [4] 3.10% [4] 25.43% 26.60% 3.40% [4] 3.40% [4]   4.10% [4]       31.71% [2] 33.94% [2] 2.72% [4] 3.05% [4] 0.98% [4] 0.98% [4]   1.33% [4]       6.84% [2] 6.71% [2] 0.87% [4] 1.19% [4]    
Financing Receivable, Modifications, Recorded Investment                                                                                                       109 172
Loans Receivable, Fair Value Disclosure $ 7,638 $ 7,638   $ 8,804                                                                         $ 6,436 [5] $ 6,436 [5]   $ 6,614 [6]                  
[1] Commercial impaired allowance for loan and lease losses includes $109 million and $172 million at September 30, 2012 and December 31, 2011 related to U.S. small business commercial renegotiated TDR loans.
[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 $7.6 billion and $8.8 billion at September 30, 2012 and December 31, 2011.
[5] Consumer loans accounted for under the fair value option were residential mortgage loans of $160 million and discontinued real estate loans of $1.0 billion. Commercial loans accounted for under the fair value option were U.S. commercial loans of $2.0 billion and non-U.S. commercial loans of $4.4 billion. For addition information, see Note 15 – Fair Value Measurements and Note 16 – Fair Value Option.
[6] Consumer loans accounted for under the fair value option were residential mortgage loans of $906 million and discontinued real estate loans of $1.3 billion. Commercial loans accounted for under the fair value option were U.S. commercial loans of $2.2 billion and non-U.S. commercial loans of $4.4 billion. For additional information, see Note 15 – Fair Value Measurements and Note 16 – Fair Value Option.