Allowance and Carrying Value of Outstanding Loans and Leases by Portfolio Segment (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2010
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Jun. 30, 2012
Impaired Loans and Troubled Debt Restructurings [Member]
|
Dec. 31, 2011
Impaired Loans and Troubled Debt Restructurings [Member]
|
Jun. 30, 2012
Collectively Evaluated For Impairment [Member]
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Dec. 31, 2011
Collectively Evaluated For Impairment [Member]
|
Jun. 30, 2012
Purchased Credit-Impaired Loans [Member]
|
Jun. 30, 2011
Purchased Credit-Impaired Loans [Member]
|
Jun. 30, 2012
Purchased Credit-Impaired Loans [Member]
|
Jun. 30, 2011
Purchased Credit-Impaired Loans [Member]
|
Dec. 31, 2011
Purchased Credit-Impaired Loans [Member]
|
Jun. 30, 2012
Home Loans [Member]
|
Mar. 31, 2012
Home Loans [Member]
|
Dec. 31, 2011
Home Loans [Member]
|
Jun. 30, 2011
Home Loans [Member]
|
Mar. 31, 2011
Home Loans [Member]
|
Dec. 31, 2010
Home Loans [Member]
|
Jun. 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]
|
Jun. 30, 2012
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
|
Dec. 31, 2011
Home Loans [Member]
Collectively Evaluated For Impairment [Member]
|
Jun. 30, 2012
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
|
Dec. 31, 2011
Home Loans [Member]
Purchased Credit-Impaired Loans [Member]
|
Jun. 30, 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]
|
Jun. 30, 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]
|
Jun. 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]
|
Jun. 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]
|
Jun. 30, 2012
Commercial [Member]
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Mar. 31, 2012
Commercial [Member]
|
Dec. 31, 2011
Commercial [Member]
|
Jun. 30, 2011
Commercial [Member]
|
Mar. 31, 2011
Commercial [Member]
|
Dec. 31, 2010
Commercial [Member]
|
Jun. 30, 2012
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
|
Dec. 31, 2011
Commercial [Member]
Impaired Loans and Troubled Debt Restructurings [Member]
|
Jun. 30, 2012
Commercial [Member]
Collectively Evaluated For Impairment [Member]
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Dec. 31, 2011
Commercial [Member]
Collectively Evaluated For Impairment [Member]
|
Jun. 30, 2012
Small Business Commercial Loan [Member]
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Dec. 31, 2011
Small Business Commercial Loan [Member]
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Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Allowance for Loan and Lease Losses, Loans Acquired | $ 6 | $ 412 | $ 493 | $ 2,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Allowance for Loan and Lease Losses | 30,288 | 32,211 | 33,783 | 37,312 | 39,843 | 41,885 | 4,010 | [1],[2] | 4,901 | [1],[2] | 17,326 | [1] | 20,423 | [1] | 8,952 | [1] | 8,952 | [1] | 8,459 | 19,964 | 20,973 | 21,079 | 20,953 | 20,097 | 19,252 | 1,890 | [1],[2] | 1,946 | [1],[2] | 9,122 | 10,674 | 8,952 | 8,459 | 7,024 | 7,664 | 8,569 | 10,931 | 13,271 | 15,463 | 1,698 | [1],[2] | 2,410 | [1],[2] | 5,326 | 6,159 | 3,300 | 3,574 | 4,135 | 5,428 | 6,475 | 7,170 | 422 | [1],[2] | 545 | [1],[2] | 2,878 | 3,590 | |||||||||||||||||||||||||||||||
Carrying Value Gross of Valuation Allowance | 883,954 | [1],[3],[4] | 917,396 | [1],[3],[4] | 34,085 | [1],[4] | 36,675 | [1],[4] | 819,678 | [1],[3],[4] | 848,920 | [1],[3],[4] | 30,191 | [1] | 30,191 | [1] | 31,801 | [1] | 380,705 | [3],[4] | 398,084 | [3],[4] | 22,337 | [1],[4] | 21,462 | [1],[4] | 328,177 | [3],[4] | 344,821 | [3],[4] | 30,191 | 31,801 | 193,454 | [3],[4] | 209,110 | [3],[4] | 5,299 | [1],[4] | 7,100 | [1],[4] | 188,155 | [3],[4] | 202,010 | [3],[4] | 309,795 | [3],[4] | 310,202 | [3],[4] | 6,449 | [1],[4] | 8,113 | [1],[4] | 303,346 | [3],[4] | 302,089 | [3],[4] | ||||||||||||||||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 3.43% | [1],[3] | 3.68% | [1],[3] | 11.76% | [1] | 13.36% | [1] | 2.11% | [1],[3] | 2.41% | [1],[3] | 29.65% | [1] | 29.65% | [1] | 26.60% | [1] | 5.24% | [3] | 5.30% | [3] | 8.46% | [1] | 9.07% | [1] | 2.78% | [3] | 3.10% | [3] | 29.65% | 26.60% | 3.63% | [3] | 4.10% | [3] | 32.04% | [1] | 33.94% | [1] | 2.83% | [3] | 3.05% | [3] | 1.07% | [3] | 1.33% | [3] | 6.54% | [1] | 6.71% | [1] | 0.95% | [3] | 1.19% | [3] | ||||||||||||||||||||||||||||||||
Financing Receivable, Modifications, Recorded Investment | 116 | 172 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Loans Receivable, Fair Value Disclosure | $ 8,361 | $ 8,804 | $ 7,189 | [5] | $ 6,614 | [6] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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