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Securitizations and Variable Interest Entities Textual (Details) (USD $)
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3 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | ||||||||||||||||||
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Mar. 31, 2012
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Mar. 31, 2011
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Dec. 31, 2011
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Mar. 31, 2012
Residential Mortgage [Member]
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Mar. 31, 2011
Residential Mortgage [Member]
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Mar. 31, 2012
Loans Receivable [Member]
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Mar. 31, 2012
Available for sale Securities [Member]
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Mar. 31, 2012
Cash and Cash Equivalents [Member]
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Mar. 31, 2012
Level 3 [Member]
Residential Mortgage [Member]
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Mar. 31, 2011
Level 3 [Member]
Residential Mortgage [Member]
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Mar. 31, 2012
Equity Interests [Member]
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Dec. 31, 2011
Equity Interests [Member]
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Mar. 31, 2012
Long-term debt [Member]
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Mar. 31, 2012
Commercial Mortgage Servicing [Member]
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Dec. 31, 2011
Commercial Mortgage Servicing [Member]
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Mar. 31, 2012
Trust Preferred Securities [Member]
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Mar. 31, 2012
Trust Preferred Securities [Member]
Preferred Stock [Member]
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Dec. 31, 2011
Trust Preferred Securities [Member]
Preferred Stock [Member]
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Mar. 31, 2012
Trust Preferred Securities [Member]
Junior Subordinated Debt [Member]
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Dec. 31, 2011
Trust Preferred Securities [Member]
Junior Subordinated Debt [Member]
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Mar. 31, 2012
Legacy Wachovia [Member]
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Dec. 31, 2011
Legacy Wachovia [Member]
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Mar. 31, 2012
Legacy Wachovia [Member]
Other Investments [Member]
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Dec. 31, 2011
Legacy Wachovia [Member]
Other Investments [Member]
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| Securitizations and Variable Interest Entities (Textual) [Abstract] | ||||||||||||||||||||||||
| Short-term borrowings included in VIE liabilities | $ 3,000,000,000 | $ 3,400,000,000 | ||||||||||||||||||||||
| Accrued expenses and other liabilities included in VIE liabilities | 706,000,000 | 963,000,000 | ||||||||||||||||||||||
| Long-term debt included in VIE liabilities | 30,000,000 | 30,000,000 | ||||||||||||||||||||||
| Total equity interest | 416,000,000 | 460,000,000 | ||||||||||||||||||||||
| % of senior loans rated as investment grade | 86.00% | |||||||||||||||||||||||
| Investment in a single tax credit structure as a percentage of outstanding equity interests | 50.00% | |||||||||||||||||||||||
| Securities Available for sale Portfolio of ARS issued by VIEs | 518,000,000 | 643,000,000 | 568,000,000 | 624,000,000 | ||||||||||||||||||||
| Carrying value - asset (liability) | 2,500,000,000 | 2,500,000,000 | 7,500,000,000 | 7,600,000,000 | ||||||||||||||||||||
| Trust Preferred Securities Notice Redeemed During Period, Value | 875,000,000 | |||||||||||||||||||||||
| Net Gains (Losses) from Sale of Assets Securitizations | 11,000,000 | 34,000,000 | ||||||||||||||||||||||
| Amount transferred related to residential mortgages to unconsolidated VIE | 139,400,000,000 | 101,400,000,000 | ||||||||||||||||||||||
| Gain Loss On transfer Of Unconsolidated VIE Debt Investments | 0 | 0 | ||||||||||||||||||||||
| Amount of servicing asset at fair value | 1,500,000,000 | 1,300,000,000 | ||||||||||||||||||||||
| Amount of liability for repurchase reserves at fair value | 62,000,000 | 35,000,000 | ||||||||||||||||||||||
| Fair value of interests held | 1,300,000,000 | 1,400,000,000 | ||||||||||||||||||||||
| Decrease in fair value from 25% adverse change | 162,000,000 | 219,000,000 | ||||||||||||||||||||||
| Private placement debt financing | 6,000,000,000 | |||||||||||||||||||||||
| Assets pledged to collateralize the borrowings of variable interest entity | $ 6,200,000,000 | $ 327,000,000 | $ 180,000,000 | |||||||||||||||||||||
| Asset-specific liquidity facilities as a percentage of funding commitment | 102.00% | |||||||||||||||||||||||