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Fair Value Measurements (Summary Of Quantitative Information About Level 3 Fair Value Measurements) (Detail) (USD $)
In Millions, unless otherwise specified |
Jun. 30, 2012
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Mar. 31, 2012
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Dec. 31, 2011
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Jun. 30, 2011
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Mar. 31, 2011
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Dec. 31, 2010
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|---|---|---|---|---|---|---|---|---|---|
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Securities available for sale | $ 27,232 | $ 24,471 | |||||||
| Mortgage servicing rights | 179 | 199 | 182 | 268 | 282 | 267 | |||
| Loans held for sale | 950 | 844 | |||||||
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Residential Non-Agency [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Securities available for sale | 14 | 16 | |||||||
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Corporate And Other Debt Securities [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Securities available for sale | 1,551 | 537 | |||||||
|
Quoted Pricing In Illiquid Markets [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Securities Available For Sale [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Securities available for sale | 14 | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Spread to LIBOR [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 17.30% | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Probability Of Default [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 1.00% | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Loss Severity [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 49.40% | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Securities Available For Sale [Member] | Weighted Average Prepayment Speed [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 12.70% | ||||||||
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Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Corporate And Other Debt Securities [Member] | Securities Available For Sale [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Securities available for sale | 2 | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Mortgage servicing rights | 179 | [1] | |||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Prepayment Speeds [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 18.40% | [1] | |||||||
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Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Option-Adjusted Spread (Basis Points) [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 1332.00% | [1] | |||||||
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Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Prepayment Speeds [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 18.40% | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Option-Adjusted Spread (Basis Points) [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 1332.00% | ||||||||
|
Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Derivatives, Net [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Derivative assets | 30 | ||||||||
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Discounted Cash Flow [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Derivatives, Net [Member] | Pull-Through [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 75.80% | ||||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Spread to LIBOR [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 5.30% | ||||||||
|
Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Probability Of Default [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 0.20% | ||||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Loss Severity [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 40.40% | ||||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Securities Available For Sale [Member] | Weighted Average Prepayment Speed [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 8.80% | ||||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Prepayment Speeds [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 5.30% | [1] | |||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Option-Adjusted Spread (Basis Points) [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 9.50% | [1] | |||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Prepayment Speeds [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 5.30% | ||||||||
|
Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Option-Adjusted Spread (Basis Points) [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 9.50% | ||||||||
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Discounted Cash Flow [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Derivatives, Net [Member] | Pull-Through [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 33.30% | ||||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Spread to LIBOR [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 69.80% | ||||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Probability Of Default [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 1.20% | ||||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Loss Severity [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 100.00% | ||||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Residential Non-Agency [Member] | Securities Available For Sale [Member] | Weighted Average Prepayment Speed [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 32.30% | ||||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Prepayment Speeds [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 30.60% | [1] | |||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Mortgage Servicing Rights [Member] | Option-Adjusted Spread (Basis Points) [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 32.00% | [1] | |||||||
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Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Prepayment Speeds [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 30.60% | ||||||||
|
Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Option-Adjusted Spread (Basis Points) [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 32.00% | ||||||||
|
Discounted Cash Flow [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Interest Rate Options [Member] | Derivatives, Net [Member] | Pull-Through [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 99.80% | ||||||||
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Activity For Sales Of Similar Loans [Member] | Nonrecurring Fair Value Measurements [Member] | Loans Held For Sale [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Loans held for sale | 77 | ||||||||
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Activity For Sales Of Similar Loans [Member] | Nonrecurring Fair Value Measurements [Member] | Loans Held For Sale [Member] | Appraisal Compatibility Adjustment Discount [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 44.60% | ||||||||
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Activity For Sales Of Similar Loans [Member] | Minimum [Member] | Nonrecurring Fair Value Measurements [Member] | Loans Held For Sale [Member] | Appraisal Compatibility Adjustment Discount [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 0.00% | ||||||||
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Activity For Sales Of Similar Loans [Member] | Maximum [Member] | Nonrecurring Fair Value Measurements [Member] | Loans Held For Sale [Member] | Appraisal Compatibility Adjustment Discount [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 84.00% | ||||||||
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Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Foreclosed Property And Other Real Estate [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Foreclosed property and other real estate | $ 48 | ||||||||
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Property Appraisal [Member] | Nonrecurring Fair Value Measurements [Member] | Foreclosed Property And Other Real Estate [Member] | Appraisal Compatibility Adjustment Discount [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 46.50% | ||||||||
|
Property Appraisal [Member] | Minimum [Member] | Nonrecurring Fair Value Measurements [Member] | Foreclosed Property And Other Real Estate [Member] | Appraisal Compatibility Adjustment Discount [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 4.50% | ||||||||
|
Property Appraisal [Member] | Maximum [Member] | Nonrecurring Fair Value Measurements [Member] | Foreclosed Property And Other Real Estate [Member] | Appraisal Compatibility Adjustment Discount [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 93.30% | ||||||||
|
Comparable Evaluated Quote [Member] | Recurring Fair Value Measurements [Member] | Other Securities [Member] | Evaluated Quote On Same Issuer/Comparable Bond [Member]
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement weighted-average percentage | 99.20% | ||||||||
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Comparable Evaluated Quote [Member] | Recurring Fair Value Measurements [Member] | Other Securities [Member] | Comparability Adjustments [Member]
|
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| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 2.10% | ||||||||
| Fair value measurement weighted-average percentage | 2.10% | ||||||||
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Comparable Evaluated Quote [Member] | Minimum [Member] | Recurring Fair Value Measurements [Member] | Other Securities [Member] | Evaluated Quote On Same Issuer/Comparable Bond [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 97.90% | ||||||||
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Comparable Evaluated Quote [Member] | Maximum [Member] | Recurring Fair Value Measurements [Member] | Other Securities [Member] | Evaluated Quote On Same Issuer/Comparable Bond [Member]
|
|||||||||
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |||||||||
| Fair value measurement percentage | 100.00% | ||||||||
|
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