Purchased Loans (Purchase Loan Balances) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 5,167,000,000	$ 6,106,000,000	$ 6,398,000,000
Purchased Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	5,368,000,000	6,485,000,000
Recorded Investment	5,167,000,000	6,106,000,000
Carrying Value	4,276,000,000	5,102,000,000
Purchased Impaired Loans [Member] \| Commercial [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	183,000,000	282,000,000
Recorded Investment	82,000,000	157,000,000
Carrying Value	64,000,000	131,000,000
Purchased Impaired Loans [Member] \| Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	390,000,000	655,000,000
Recorded Investment	323,000,000	516,000,000
Carrying Value	245,000,000	409,000,000
Purchased Impaired Loans [Member] \| Residential Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	2,551,000,000	3,025,000,000
Recorded Investment	2,697,000,000	3,121,000,000
Carrying Value	2,173,000,000	2,591,000,000
Purchased Impaired Loans [Member] \| Consumer [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	2,244,000,000	2,523,000,000
Recorded Investment	2,065,000,000	2,312,000,000
Carrying Value	1,794,000,000	1,971,000,000
Total commercial lending [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	405,000,000		782,000,000
Total commercial lending [Member] \| Purchased Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	573,000,000	937,000,000
Recorded Investment	405,000,000	673,000,000
Carrying Value	309,000,000	540,000,000
Total consumer lending [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	4,762,000,000		5,616,000,000
Total consumer lending [Member] \| Purchased Impaired Loans [Member]
Financing Receivable, Impaired [Line Items]
Outstanding Balance	4,795,000,000	5,548,000,000
Recorded Investment	4,762,000,000	5,433,000,000
Carrying Value	$ 3,967,000,000	$ 4,562,000,000

The carrying value as of the reporting period of loans not accounted for as debt securiites 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.

No definition available.

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- Definition

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and allowance for loan losses). This relates to loans not accounted for 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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 15

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

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- Definition

The undiscounted sum of all amounts, including amounts deemed principal, interest, fees, penalties, and other under the loan, owed to the investor at the reporting date, whether or not currently due and whether or not any such amounts have been written or charged off by the investor. 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

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