Purchased Loans (Accretable Yield) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2013
Financing Receivable, Impaired [Line Items]
Beginning Balance	$ 2,166
Accretion (including excess cash recoveries)	(368)
Net reclassifications to accretable from non-accretable	379
Disposals	(13)
Ending Balance	$ 2,164
Consumer Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Net reclassifications from nonaccretable - percentage	58.00%

The aggregate excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not 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.

+ References+ Details

The current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan. This relates to loans not 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.

+ References+ Details

- Definition

The sale or transfer of a loan during the period resulting in a reduction in the excess of a loan's cash flows expected to be collected over the investor's initial investment. This relates to loans not accounted for as a debt security, with evidence of deterioration of credit quality since origination that was 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.

+ References+ Details

- Definition

The change in the estimate of cash flows expected to be collected, after acquisition of loans, which results in an increase in accretable yield (for example, if actual cash flows are significantly greater than previously expected). This relates to loans not accounted for as debt securities, with evidence of deterioration of credit quality since origination that was 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.

+ References+ Details