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Derivatives - Credit-related Contingent Features and Collateral (Details) (USD $)
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Dec. 31, 2012
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Dec. 31, 2011
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| Derivative [Line Items] | ||
| Collateral Held, Cash and Securities | $ 85,600,000,000 | $ 87,700,000,000 |
| Collateral Already Posted, Aggregate Fair Value | 74,100,000,000 | 86,500,000,000 |
| Colateral Not Yet Posted Aggregate Fair Value | 2,200,000,000 | |
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Unilateral Derivative Termination Contract [Member]
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| Derivative [Line Items] | ||
| Collateral Already Posted, Aggregate Fair Value | 1,600,000,000 | |
| Derivative Liability, Fair Value, Amount Offset Against Collateral | 1,652,000,000 | |
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Unilateral Derivative Termination Contract For Rating Downgrade of Long-Term Senior Debt [Member]
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| Derivative [Line Items] | ||
| Collateral Already Posted, Aggregate Fair Value | 3,000,000,000 | |
| Derivative Liability, Fair Value, Amount Offset Against Collateral | 3,800,000,000 | |
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Bank of America, N.A. [Member]
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| Derivative [Line Items] | ||
| Colateral Not Yet Posted Aggregate Fair Value | 721,000,000 | |
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Merrill Lynch [Member]
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| Derivative [Line Items] | ||
| Colateral Not Yet Posted Aggregate Fair Value | 1,500,000,000 | |
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Rating Agency Downgrade By One Notch [Member]
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| Derivative [Line Items] | ||
| Additional Collateral, Aggregate Fair Value | 3,300,000,000 | |
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Rating Agency Downgrade By One Notch [Member] | Bank of America, N.A. [Member]
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| Derivative [Line Items] | ||
| Additional Collateral, Aggregate Fair Value | 2,900,000,000 | |
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Rating Agency Downgrade By One Notch [Member] | Merrill Lynch [Member]
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| Derivative [Line Items] | ||
| Additional Collateral, Aggregate Fair Value | 418,000,000 | |
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Rating Agency Downgrade by Two Notches [Member]
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| Derivative [Line Items] | ||
| Additional Collateral, Aggregate Fair Value | 4,400,000,000 | |
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Rating Agency Downgrade by Two Notches [Member] | Unilateral Derivative Termination Contract For Rating Downgrade of Long-Term Senior Debt [Member]
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| Derivative [Line Items] | ||
| Collateral Already Posted, Aggregate Fair Value | 1,100,000,000 | |
| Derivative Liability, Incremental Increase, Fair Value, Amount Offset Against Collateral | 1,700,000,000 | |
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Rating Agency Downgrade by Two Notches [Member] | Bank of America, N.A. [Member]
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| Derivative [Line Items] | ||
| Additional Collateral, Aggregate Fair Value | 455,000,000 | |
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Rating Agency Downgrade by Two Notches [Member] | Merrill Lynch [Member]
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| Derivative [Line Items] | ||
| Additional Collateral, Aggregate Fair Value | $ 3,966,000,000 |
| X | ||||||||||
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- Definition
The amount of cash and securities collateral received and posted related to derivative instruments under master netting agreements (ISDA). No definition available.
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| X | ||||||||||
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- Definition
The aggregate fair value of assets that are not yet posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. No definition available.
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- Definition
Derivative Liability, Incremental Increase, Fair Value, Amount Offset Against Collateral No definition available.
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- Definition
The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount as of the balance sheet date of the fair value of derivative liabilities that in accordance with the entity's accounting policy were offset against the right to reclaim cash collateral under a master netting arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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