Allowance and Carrying Value of Outstanding Loans and Leases by Portfolio Segment (Details) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2014
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Mar. 31, 2014
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Dec. 31, 2013
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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | $ 15,811 | $ 16,618 | $ 17,428 | $ 21,235 | $ 22,441 | $ 24,179 | ||||||||||||||
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality | 23,404 | 25,265 | ||||||||||||||||||
Financing Receivable, Collectively Evaluated for Impairment | 845,652 | [1],[2] | 856,341 | [1],[2] | ||||||||||||||||
Financing Receivable, Individually Evaluated for Impairment | 31,942 | [2],[3] | 36,585 | [2],[3] | ||||||||||||||||
Carrying Value | 900,998 | [1],[2] | 918,191 | [1],[2] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 1.75% | [1] | 1.90% | [1] | ||||||||||||||||
Loans Receivable, Fair Value Disclosure | 10,901 | 10,042 | ||||||||||||||||||
Impaired Loans and Troubled Debt Restructurings [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 1,785 | [3],[4] | 2,087 | [3],[4] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 5.59% | [3] | 5.70% | [3] | ||||||||||||||||
Collectively Evaluated For Impairment [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 12,190 | 12,848 | ||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 1.44% | [1] | 1.50% | [1] | ||||||||||||||||
Purchased Credit-Impaired Loans [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 1,836 | 2,493 | ||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 7.84% | 9.87% | ||||||||||||||||||
Home Loans [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 6,908 | 7,556 | 8,518 | 12,396 | 13,438 | 14,933 | ||||||||||||||
Financing Receivable, Allowance for Credit Losses, Acquired with Deteriorated Credit Quality | 23,404 | 25,265 | ||||||||||||||||||
Financing Receivable, Collectively Evaluated for Impairment | 275,711 | [1],[2] | 285,015 | [1],[2] | ||||||||||||||||
Financing Receivable, Individually Evaluated for Impairment | 27,520 | [2],[3] | 31,458 | [2],[3] | ||||||||||||||||
Carrying Value | 326,635 | [1],[2] | 341,738 | [1],[2] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 2.11% | [1] | 2.49% | [1] | ||||||||||||||||
Home Loans [Member] | Impaired Loans and Troubled Debt Restructurings [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 1,069 | [3],[4] | 1,231 | [3],[4] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 3.88% | [3] | 3.91% | [3] | ||||||||||||||||
Home Loans [Member] | Collectively Evaluated For Impairment [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 4,003 | 4,794 | ||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 1.45% | [1] | 1.68% | [1] | ||||||||||||||||
Home Loans [Member] | Purchased Credit-Impaired Loans [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 1,836 | 2,493 | ||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 7.84% | 9.87% | ||||||||||||||||||
Credit Card and Other Consumer [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 4,417 | 4,775 | 4,905 | 5,671 | 5,874 | 6,140 | ||||||||||||||
Financing Receivable, Collectively Evaluated for Impairment | 184,143 | [1],[2] | 185,969 | [1],[2] | ||||||||||||||||
Financing Receivable, Individually Evaluated for Impairment | 1,541 | [2],[3] | 2,079 | [2],[3] | ||||||||||||||||
Carrying Value | 185,684 | [1],[2] | 188,048 | [1],[2] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 2.38% | [1] | 2.61% | [1] | ||||||||||||||||
Credit Card and Other Consumer [Member] | Impaired Loans and Troubled Debt Restructurings [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 438 | [3],[4] | 579 | [3],[4] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 28.42% | [3] | 27.85% | [3] | ||||||||||||||||
Credit Card and Other Consumer [Member] | Collectively Evaluated For Impairment [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 3,979 | 4,326 | ||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 2.16% | [1] | 2.33% | [1] | ||||||||||||||||
Commercial [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 4,486 | 4,287 | 4,005 | 3,168 | 3,129 | 3,106 | ||||||||||||||
Financing Receivable, Collectively Evaluated for Impairment | 385,798 | [1],[2] | 385,357 | [1],[2] | ||||||||||||||||
Financing Receivable, Individually Evaluated for Impairment | 2,881 | [2],[3] | 3,048 | [2],[3] | ||||||||||||||||
Carrying Value | 388,679 | [1],[2] | 388,405 | [1],[2] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 1.15% | [1] | 1.03% | [1] | ||||||||||||||||
Loans Receivable, Fair Value Disclosure | 8,747 | [5] | 7,878 | [6] | ||||||||||||||||
Commercial [Member] | Impaired Loans and Troubled Debt Restructurings [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 278 | [3],[4] | 277 | [3],[4] | ||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 9.65% | [3] | 9.09% | [3] | ||||||||||||||||
Commercial [Member] | Collectively Evaluated For Impairment [Member]
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | 4,208 | 3,728 | ||||||||||||||||||
Valuation Allowance As A Percentage Of Carrying Value | 1.09% | [1] | 0.97% | [1] | ||||||||||||||||
Small Business Commercial Loan [Member] | UNITED STATES
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Carrying Value of Outstanding Loans and Leases [Abstract] | ||||||||||||||||||||
Allowance for Loan and Lease Losses | $ 39 | $ 36 | ||||||||||||||||||
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