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
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Dec. 31, 2010
Mar. 31, 2012
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2012
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Collectively Evaluated For Impairment [Member]
Mar. 31, 2012
Purchased Credit-Impaired Loans [Member]
Mar. 31, 2011
Purchased Credit-Impaired Loans [Member]
Dec. 31, 2011
Purchased Credit-Impaired Loans [Member]
Mar. 31, 2012
Home Loans [Member]
Dec. 31, 2011
Home Loans [Member]
Mar. 31, 2011
Home Loans [Member]
Dec. 31, 2010
Home Loans [Member]
Mar. 31, 2012
Home Loans [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Home Loans [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2012
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
Mar. 31, 2012
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
Dec. 31, 2011
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
Mar. 31, 2012
Credit Card and Other Consumer [Member]
Dec. 31, 2011
Credit Card and Other Consumer [Member]
Mar. 31, 2011
Credit Card and Other Consumer [Member]
Dec. 31, 2010
Credit Card and Other Consumer [Member]
Mar. 31, 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]
Mar. 31, 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]
Mar. 31, 2012
Commercial [Member]
Dec. 31, 2011
Commercial [Member]
Mar. 31, 2011
Commercial [Member]
Dec. 31, 2010
Commercial [Member]
Mar. 31, 2012
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Dec. 31, 2011
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
Mar. 31, 2012
Commercial [Member]
Collectively Evaluated For Impairment [Member]
Dec. 31, 2011
Commercial [Member]
Collectively Evaluated For Impairment [Member]
Mar. 31, 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                 $ 487 $ 1,600                                                          
Carrying Value of Outstanding Loans and Leases [Abstract]                                                                              
Allowance for Loan and Lease Losses 32,211 33,783 39,843 41,885 4,476 [1],[2] 4,901 [1],[2] 18,789 [1] 20,423 [1] 8,946 [1]   8,459 20,973 21,079 20,097 19,252 1,898 [1],[2] 1,946 [1],[2] 10,129 10,674 8,946 8,459 7,664 8,569 13,271 15,463 2,113 [1],[2] 2,410 [1],[2] 5,551 6,159 3,574 4,135 6,475 7,170 465 [1],[2] 545 [1],[2] 3,109 3,590    
Carrying Value Gross of Valuation Allowance 893,102 [1],[3],[4] 917,396 [1],[3],[4]     35,507 [1],[3] 36,675 [1],[3] 826,748 [1],[3],[4] 848,920 [1],[3],[4] 30,847 [1]   31,801 [1] 388,130 [3],[4] 398,084 [3],[4]     21,777 [1],[3] 21,462 [1],[3] 335,506 [3],[4] 344,821 [3],[4] 30,847 31,801 199,082 [3],[4] 209,110 [3],[4]     6,178 [1],[3] 7,100 [1],[3] 192,904 [3],[4] 202,010 [3],[4] 305,890 [3],[4] 310,202 [3],[4]     7,552 [1],[3] 8,113 [1],[3] 298,338 [3],[4] 302,089 [3],[4]    
Valuation Allowance As A Percentage Of Carrying Value 3.61% [1],[4] 3.68% [1],[4]     12.61% [1] 13.36% [1] 2.27% [1],[4] 2.41% [1],[4] 29.00% [1]   26.60% [1] 5.40% [4] 5.30% [4]     8.72% [1] 9.07% [1] 3.02% [4] 3.10% [4] 29.00% 26.60% 3.85% [4] 4.10% [4]     34.20% [1] 33.94% [1] 2.88% [4] 3.05% [4] 1.17% [4] 1.33% [4]     6.16% [1] 6.71% [1] 1.04% [4] 1.19% [4]    
Financing Receivable, Modifications, Recorded Investment                                                                           134 172
Loans Receivable, Fair Value Disclosure $ 9,192 $ 8,804                                                       $ 6,988 [5] $ 6,614 [6]                
[1] 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.
[2] Commercial impaired allowance for loan and lease losses includes $134 million and $172 million at March 31, 2012 and December 31, 2011 related to U.S. small business commercial renegotiated TDR loans.
[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 $9.2 billion and $8.8 billion at March 31, 2012 and December 31, 2011.
[5] Consumer loans accounted for under the fair value option were residential mortgage loans of $881 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 $4.8 billion. See Note 15 – Fair Value Measurements and Note 16 – Fair Value Option for additional information.
[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. See Note 15 – Fair Value Measurements and Note 16 – Fair Value Option for additional information.