Loans and Allowance for Loan Losses (Details 7) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Consumer portfolio loans
Nonaccrual	$ 514	$ 442
Total loans held for investment, before purchased credit-impaired loans	71,585	67,206
Consumer
Consumer portfolio loans
Accrual	30,730	28,737
Nonaccrual	289	332
Total loans held for investment, before purchased credit-impaired loans	31,019	29,069
Loans not covered	32	38
Consumer portfolio
Consumer portfolio loans
Accrual	30,508	28,495
Nonaccrual	289	332
Total loans held for investment, before purchased credit-impaired loans	30,797	28,827
Consumer portfolio \| Residential mortgage
Consumer portfolio loans
Accrual	27,376	25,261
Nonaccrual	243	286
Total loans held for investment, before purchased credit-impaired loans	27,619	25,547
Consumer portfolio \| Home equity and other consumer loans
Consumer portfolio loans
Accrual	3,132	3,234
Nonaccrual	46	46
Total loans held for investment, before purchased credit-impaired loans	3,178	3,280
Purchased credit-impaired loans
Consumer portfolio loans
Nonaccrual	17	15
Purchased credit-impaired loans \| Consumer
Consumer portfolio loans
Accrual	222	242
Total loans held for investment, before purchased credit-impaired loans	$ 222	$ 242

Financing receivable recorded investment accrual status.

No definition available.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes purchased credit impaired loans.

+ References

No definition available.

+ Details

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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