Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases - Home Loans Impaired Loans (Details)

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Outstanding Loans and Leases - Home Loans Impaired Loans (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Home Loans [Member]
Dec. 31, 2011
Home Loans [Member]
Dec. 31, 2012
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2011
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2012
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2011
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2012
Discontinued real estate
Home Loans [Member]
Dec. 31, 2011
Discontinued real estate
Home Loans [Member]
Dec. 31, 2012
Government Modifications [Member]
Home Loans [Member]
Dec. 31, 2011
Government Modifications [Member]
Home Loans [Member]
Dec. 31, 2012
Government Modifications [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2011
Government Modifications [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2012
Government Modifications [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2011
Government Modifications [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2012
Government Modifications [Member]
Discontinued real estate
Home Loans [Member]
Dec. 31, 2011
Government Modifications [Member]
Discontinued real estate
Home Loans [Member]
Dec. 31, 2012
Loans Discharged in Chapter Seven Bankruptcy [Member]
Home Loans [Member]
Dec. 31, 2012
Loans Discharged in Chapter Seven Bankruptcy [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2012
Loans Discharged in Chapter Seven Bankruptcy [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2012
Current or Less Than Sixty Days Past Due [Member]
Home Loans [Member]
Dec. 31, 2012
Discharged in the Current Year [Member]
Additional Troubled Debt Restructurings Recognized [Member]
Dec. 31, 2012
Discharged in the Prior Year [Member]
Additional Troubled Debt Restructurings Recognized [Member]
Dec. 31, 2012
Discharged Two or More Years Ago [Member]
Additional Troubled Debt Restructurings Recognized [Member]
Dec. 31, 2012
Class of Financing Receivable [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2011
Class of Financing Receivable [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2012
Class of Financing Receivable [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2011
Class of Financing Receivable [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2012
Class of Financing Receivable [Member]
Discontinued real estate
Home Loans [Member]
Dec. 31, 2011
Class of Financing Receivable [Member]
Discontinued real estate
Home Loans [Member]
Dec. 31, 2012
Class of Financing Receivable [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2011
Class of Financing Receivable [Member]
Residential Mortgage [Member]
Home Loans [Member]
Dec. 31, 2012
Class of Financing Receivable [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2011
Class of Financing Receivable [Member]
Home Equity Line of Credit [Member]
Home Loans [Member]
Dec. 31, 2012
Class of Financing Receivable [Member]
Discontinued real estate
Home Loans [Member]
Dec. 31, 2011
Class of Financing Receivable [Member]
Discontinued real estate
Home Loans [Member]
Financing Receivable, Impaired [Line Items]                                                                      
Real Estate Acquired Through Foreclosure $ 650 $ 2,000                                                                  
Unpaid Principal Balance     33,838 23,203 3,880 3,298 611 634                               14,080 12,296 1,256 1,551 143 213 19,758 10,907 2,624 1,747 468 421
Carrying Value     27,758 19,287 2,125 1,776 367 399                               13,051 11,119 1,022 1,297 107 159 14,707 8,168 1,103 479 260 240
Related Allowance     1,233 1,295 448 622 19 29                               1,233 1,295 448 622 19 29            
Average Carrying Value     22,136 15,664 1,879 1,799 376 395                               11,439 9,379 1,145 1,357 136 173 10,697 6,285 734 442 240 222
Interest Income Recognized     775 [1] 552 [1] 93 [1] 57 [1] 14 [1] 14 [1]                               417 [1] 319 [1] 44 [1] 34 [1] 6 [1] 6 [1] 358 [1] 233 [1] 49 [1] 23 [1] 8 [1] 8 [1]
Unpaid Principal Balance 16,809 [2] 12,876 [2] 14,929 [2] 11,623 [2] 1,721 [2] 1,112 [2] 159 [2] 141 [2]                                                      
Carrying Value 13,086 [2] 10,547 [2] 12,143 [2] 9,903 [2] 858 [2] 556 [2] 85 [2] 88 [2] 840 1,477 724 1,235 110 230 6 12 3,534 [3] 2,916 [3] 598 [3] 1,200 [3]                              
Pre Modification Interest Rate 5.49% [2] 6.01% [2] 5.52% [2] 5.94% [2] 5.22% [2] 6.58% [2] 5.21% [2] 6.68% [2]                                                      
Post Modification Interest Rate 4.66% [2] 5.17% [2] 4.70% [2] 5.16% [2] 4.39% [2] 5.25% [2] 4.35% [2] 5.08% [2]                                                      
Net Charge-Offs $ 1,239 [2] $ 547 [2] $ 507 [2] $ 299 [2] $ 716 [2] $ 239 [2] $ 16 [2] $ 9 [2]                                                      
Toubled Debt Restructuring Carrying Value, Percentage                                         27.00% 42.00% 31.00%                        
[1] Interest income recognized includes interest accrued and collected on the outstanding balances of accruing impaired loans as well as interest cash collections on nonaccruing impaired loans for which the principal is considered collectible.
[2] TDRs entered into during 2012 include principal forgiveness as follows: residential mortgage modifications of $755 million, home equity modifications of $9 million and discontinued real estate modifications of $23 million. Prior to 2012, the principal forgiveness amount was not significant.
[3] Includes loans newly classified as TDRs in accordance with new regulatory guidance on loans discharged in Chapter 7 bankruptcy that was issued in 2012.