Loans and Leases (TDRs that Continue to Accrue Interest and Nonaccrual) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Commercial and industrial	$ 38,429	$ 38,295
CRE-other	11,425	11,461
CRE-residential ADC	1,175	1,261
Direct retail lending	15,767	15,817
Sales finance	8,114	7,736
Revolving credit	2,284	2,330
Residential mortgage	23,954	24,272
Other lending subsidiaries	10,043	10,137
Total performing TDRs	1,289	1,327
Nonperforming TDRs	222	240
Total TDRs	1,511	1,567
Mortgage TDRs held for investment that are government guaranteed	336	313
Mortgage TDRs held for sale that are government guaranteed	2	2
ALLL attributable to TDRs	287	281
Performing TDRs [Member]
Commercial and industrial	54	77
CRE-other	67	67
CRE-residential ADC	24	21
Direct retail lending	193	197
Sales finance	19	19
Revolving credit	55	56
Residential mortgage	715	769
Other lending subsidiaries	162	121
Total performing TDRs	$ 1,289	$ 1,327

Allowance for loan losses allocated to troubled debt restructurings.

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- Definition

Reflects the net carrying amount of direct retail loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on direct retail loans.

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No definition available.

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- Definition

Other commercial real estate loans consisting largely of office buildings, hotels, warehouses, apartments, rental houses and shopping centers.

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Commercial real estate-residential ADC represents residential acquisition, development and construction loans

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No definition available.

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Amount of loans that have been restructured but do not accrue interest

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No definition available.

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Reflects the net carrying amount of other lending subsidiaries loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on specialized lending loans.

+ References

No definition available.

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Restructured mortgage loans held for investment that are government guaranteed

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Restructured mortgage loans held for sale that are government guaranteed

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Reflects the net carrying amount of sales finance loans held in portfolio, after deducting deferred income, but before deducting the allowance for losses on sales finance loans.

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No definition available.

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Amount of loans that continue to accrue interest under the terms of restructurings

+ References

No definition available.

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The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-SubTopic 40

-Section 50

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Amount before allowance of consumer real estate loans. Includes, but not limited to, construction financing, residential mortgage loans, and home equity lines of credit. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of credit card loans issued to individuals. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of loans issued to commercial and industrial institutions. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes real estate loans and loans covered under loss sharing agreements.

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