Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for loans accounted for as debt securities with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable.

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- Definition

The sum of the periodic provision charged to earnings, based on an assessment of uncollectibility from the counterparty on account of loan, lease or other credit losses, to reduce these accounts to the amount that approximates their net realizable value.

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Purchased Loans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Provision for credit losses	$ 157	$ 256	$ 393	$ 441
Charge-offs			925	929
Specific allowance for loan and lease losses associated with purchased impaired loans	710		710		840
Purchased impaired loans	6,778	8,083	6,778	8,083	7,406
Purchased Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Provision for credit losses			90
Charge-offs			70
Specific allowance for loan and lease losses associated with purchased impaired loans	1,100		1,100		1,100
Impaired Loans With Associated Allowance [Member]
Financing Receivable, Impaired [Line Items]
Purchased impaired loans	6,200		6,200
Impaired Loans Without Associated Allowance [Member]
Financing Receivable, Impaired [Line Items]
Purchased impaired loans	$ 600		$ 600