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Transactions with Bank of America (Details) (USD $)
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3 Months Ended | 12 Months Ended | |||||||||||||||
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Dec. 31, 2012
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Sep. 30, 2012
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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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Sep. 30, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Related Party Transaction [Line Items] | |||||||||||||||||
| Outstanding Principal Balance of Residential Mortgage Loans Included in Settlement Agreement | $ 6,600,000,000 | $ 6,600,000,000 | |||||||||||||||
| Receivables from Bank of America | |||||||||||||||||
| Total | 45,830,000,000 | 59,945,000,000 | 45,830,000,000 | 59,945,000,000 | |||||||||||||
| Payables to Bank of America | |||||||||||||||||
| Total | 8,752,000,000 | 31,731,000,000 | 8,752,000,000 | 31,731,000,000 | |||||||||||||
| Net revenues | 5,650,000,000 | 4,687,000,000 | 5,115,000,000 | 4,765,000,000 | 3,705,000,000 | 5,873,000,000 | 6,913,000,000 | 7,906,000,000 | 20,217,000,000 | 24,397,000,000 | 27,951,000,000 | ||||||
| Non-interest expenses | 5,487,000,000 | 5,509,000,000 | 4,897,000,000 | 6,582,000,000 | 6,124,000,000 | 6,260,000,000 | 9,365,000,000 | 7,239,000,000 | 22,475,000,000 | 28,988,000,000 | 23,923,000,000 | ||||||
| Investment banking revenue | 4,914,000,000 | 5,179,000,000 | 5,313,000,000 | ||||||||||||||
| Realized gain on sale of available-for-sale securities | 5,000,000 | 69,000,000 | 531,000,000 | ||||||||||||||
| Sales of available-for-sale securities | 22,000,000 | 4,290,000,000 | 15,472,000,000 | ||||||||||||||
| Intercompany service fee revenue from Bank of America | 986,000,000 | 944,000,000 | 329,000,000 | ||||||||||||||
| Intercompany service fee expense from Bank of America | 1,798,000,000 | 2,320,000,000 | 538,000,000 | ||||||||||||||
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Bank of America
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| Receivables from Bank of America | |||||||||||||||||
| Cash and cash equivalents | 9,446,000,000 | 8,681,000,000 | 9,446,000,000 | 8,681,000,000 | |||||||||||||
| Cash and securities segregated for regulatory purposes | 5,257,000,000 | 6,107,000,000 | 5,257,000,000 | 6,107,000,000 | |||||||||||||
| Receivables under resale agreements | 13,090,000,000 | 26,855,000,000 | 13,090,000,000 | 26,855,000,000 | |||||||||||||
| Trading assets | 409,000,000 | 700,000,000 | 409,000,000 | 700,000,000 | |||||||||||||
| Net intercompany funding receivable | 16,473,000,000 | 11,318,000,000 | 16,473,000,000 | 11,318,000,000 | |||||||||||||
| Other receivables | 1,155,000,000 | 6,284,000,000 | 1,155,000,000 | 6,284,000,000 | |||||||||||||
| Total | 45,830,000,000 | 59,945,000,000 | 45,830,000,000 | 59,945,000,000 | |||||||||||||
| Payables to Bank of America | |||||||||||||||||
| Payables under repurchase agreements | 556,000,000 | 22,647,000,000 | 556,000,000 | 22,647,000,000 | |||||||||||||
| Payables under securities loaned transactions | 3,686,000,000 | 2,519,000,000 | 3,686,000,000 | 2,519,000,000 | |||||||||||||
| Short-term borrowings | 925,000,000 | 1,450,000,000 | 925,000,000 | 1,450,000,000 | |||||||||||||
| Deposits | 140,000,000 | 159,000,000 | 140,000,000 | 159,000,000 | |||||||||||||
| Trading liabilities | 509,000,000 | 503,000,000 | 509,000,000 | 503,000,000 | |||||||||||||
| Other payables | 1,780,000,000 | 1,803,000,000 | 1,780,000,000 | 1,803,000,000 | |||||||||||||
| Long-term borrowings(1) | 1,156,000,000 | [1] | 2,650,000,000 | [1] | 1,156,000,000 | [1] | 2,650,000,000 | [1] | |||||||||
| Total | 8,752,000,000 | 31,731,000,000 | 8,752,000,000 | 31,731,000,000 | |||||||||||||
| Net revenues | 1,600,000,000 | 1,500,000,000 | 1,000,000,000 | ||||||||||||||
| Non-interest expenses | 2,200,000,000 | 2,500,000,000 | 807,000,000 | ||||||||||||||
| Investment banking revenue | 125,000,000 | 322,000,000 | 212,000,000 | ||||||||||||||
| Realized gain on sale of available-for-sale securities | 280,000,000 | ||||||||||||||||
| Sales of available-for-sale securities | 11,000,000,000 | ||||||||||||||||
| Gain on sale of Bloomberg Inc. notes receivable | 600,000,000 | ||||||||||||||||
| Intercompany service fee revenue from Bank of America | 986,000,000 | 944,000,000 | 329,000,000 | ||||||||||||||
| Intercompany service fee expense from Bank of America | 1,800,000,000 | 2,300,000,000 | 538,000,000 | ||||||||||||||
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Short-term Revolving Credit Facility | Bank of America
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| Payables to Bank of America | |||||||||||||||||
| Amount outstanding on line of credit | 16,200,000,000 | 3,700,000,000 | 16,200,000,000 | 3,700,000,000 | |||||||||||||
| Maximum amount available under short-term revolving credit facility | 25,000,000,000 | 25,000,000,000 | |||||||||||||||
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Extendible One-Year Revolving Credit Facility | Bank of America
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| Payables to Bank of America | |||||||||||||||||
| Number of years by which credit facility receivable will be automatically extended | 1 year | ||||||||||||||||
| Number of days prior to maturity date required for cancelation notice | 45 days | ||||||||||||||||
| Amount outstanding on line of credit | 0 | 0 | |||||||||||||||
| Maximum amount available under short-term revolving credit facility | 50,000,000,000 | 50,000,000,000 | |||||||||||||||
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Junior Subordinated Debt [Member] | Bank of America
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| Payables to Bank of America | |||||||||||||||||
| Subordinated borrowings from Bank of America | $ 2,578,000,000 | $ 2,578,000,000 | |||||||||||||||
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