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Long-term Debt - Interest Rates (Details)
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12 Months Ended |
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Dec. 31, 2011
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Bank of America Corporation [Member] | Fixed Rate [Member] | Senior Notes [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
4.81%
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| Weighted Average Rate of Debt Minimum |
1.42%
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| Weighted Average Rate of Debt Maximum |
7.85%
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Bank of America Corporation [Member] | Fixed Rate [Member] | Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
5.39%
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| Weighted Average Rate of Debt Minimum |
1.80%
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| Weighted Average Rate of Debt Maximum |
10.20%
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Bank of America Corporation [Member] | Fixed Rate [Member] | Junior Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
6.93%
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| Weighted Average Rate of Debt Minimum |
5.25%
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| Weighted Average Rate of Debt Maximum |
11.45%
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Bank of America Corporation [Member] | Floating Rate [Member] | Senior Notes [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
1.46%
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| Weighted Average Rate of Debt Minimum |
0.23%
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| Weighted Average Rate of Debt Maximum |
6.64%
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Bank of America Corporation [Member] | Floating Rate [Member] | Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
2.02%
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| Weighted Average Rate of Debt Minimum |
0.12%
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| Weighted Average Rate of Debt Maximum |
5.06%
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Bank of America Corporation [Member] | Floating Rate [Member] | Junior Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
1.14%
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| Weighted Average Rate of Debt Minimum |
0.80%
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| Weighted Average Rate of Debt Maximum |
3.81%
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Merrill Lynch and Co., Inc. and Subsidiaries [Member] | Fixed Rate [Member] | Senior Notes [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
5.64%
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| Weighted Average Rate of Debt Minimum |
1.10%
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| Weighted Average Rate of Debt Maximum |
17.61%
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Merrill Lynch and Co., Inc. and Subsidiaries [Member] | Fixed Rate [Member] | Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
6.04%
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| Weighted Average Rate of Debt Minimum |
2.61%
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| Weighted Average Rate of Debt Maximum |
8.13%
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Merrill Lynch and Co., Inc. and Subsidiaries [Member] | Fixed Rate [Member] | Junior Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
6.91%
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| Weighted Average Rate of Debt Minimum |
6.45%
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| Weighted Average Rate of Debt Maximum |
7.38%
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Merrill Lynch and Co., Inc. and Subsidiaries [Member] | Floating Rate [Member] | Senior Notes [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
1.77%
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| Weighted Average Rate of Debt Minimum |
0.03%
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| Weighted Average Rate of Debt Maximum |
5.18%
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Merrill Lynch and Co., Inc. and Subsidiaries [Member] | Floating Rate [Member] | Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
1.59%
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| Weighted Average Rate of Debt Minimum |
0.98%
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| Weighted Average Rate of Debt Maximum |
2.89%
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Bank of America, N.A. and Other Subsidiaries [Member] | Fixed Rate [Member] | Senior Notes [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
5.06%
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| Weighted Average Rate of Debt Minimum |
4.00%
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| Weighted Average Rate of Debt Maximum |
7.61%
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Bank of America, N.A. and Other Subsidiaries [Member] | Fixed Rate [Member] | Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
5.68%
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| Weighted Average Rate of Debt Minimum |
5.30%
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| Weighted Average Rate of Debt Maximum |
6.10%
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Bank of America, N.A. and Other Subsidiaries [Member] | Floating Rate [Member] | Senior Notes [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
0.28%
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| Weighted Average Rate of Debt Minimum |
0.21%
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| Weighted Average Rate of Debt Maximum |
0.77%
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Bank of America, N.A. and Other Subsidiaries [Member] | Floating Rate [Member] | Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
0.83%
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| Weighted Average Rate of Debt Minimum |
0.37%
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| Weighted Average Rate of Debt Maximum |
0.85%
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Subsidiaries [Member] | Fixed Rate [Member] | Junior Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
6.87%
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| Weighted Average Rate of Debt Minimum |
6.63%
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| Weighted Average Rate of Debt Maximum |
7.13%
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Subsidiaries [Member] | Floating Rate [Member] | Junior Subordinated Debt [Member]
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| Debt Instrument [Line Items] |
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| Weighted Average Rate of Debt |
3.42%
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| Weighted Average Rate of Debt Minimum |
0.95%
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| Weighted Average Rate of Debt Maximum |
7.72%
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