Loans and Allowance for Credit Losses, PCI, by Delinquency Status, Consumer (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
By delinquency status:
Purchased Credit Impaired Loans (carrying value)	$ 21,555	$ 23,320
Residential Mortgage [Member]
By delinquency status:
Purchased Credit Impaired Loans (carrying value)	20,682	21,813
Residential Mortgage [Member] \| Purchased Credit-Impaired Loans [Member]
By delinquency status:
Current-29 DPD and still accruing	19,076	19,404
30-59 DPD and still accruing	1,790	1,994
60-89 DPD and still accruing	808	1,054
90-119 DPD and still accruing	304	404
120-179 DPD and still accruing	348	443
180 or more DPD and still accruing	3,517	3,737
Total consumer PCI loans (adjusted unpaid principal balance)	25,843	27,036
Purchased Credit Impaired Loans (carrying value)	20,682	21,813
Real estate 1-4 family first mortgage [Member]
By delinquency status:
Purchased Credit Impaired Loans (carrying value)	20,601	21,712
Real estate 1-4 family first mortgage [Member] \| Purchased Credit-Impaired Loans [Member]
By delinquency status:
Current-29 DPD and still accruing	18,860	19,236
30-59 DPD and still accruing	1,783	1,987
60-89 DPD and still accruing	804	1,051
90-119 DPD and still accruing	302	402
120-179 DPD and still accruing	345	440
180 or more DPD and still accruing	3,502	3,654
Total consumer PCI loans (adjusted unpaid principal balance)	25,596	26,770
Purchased Credit Impaired Loans (carrying value)	20,601	21,712
Real estate 1-4 family junior lien mortgage [Member]
By delinquency status:
Purchased Credit Impaired Loans (carrying value)	81	101
Real estate 1-4 family junior lien mortgage [Member] \| Purchased Credit-Impaired Loans [Member]
By delinquency status:
Current-29 DPD and still accruing	216	168
30-59 DPD and still accruing	7	7
60-89 DPD and still accruing	4	3
90-119 DPD and still accruing	2	2
120-179 DPD and still accruing	3	3
180 or more DPD and still accruing	15	83
Total consumer PCI loans (adjusted unpaid principal balance)	247	266
Purchased Credit Impaired Loans (carrying value)	$ 81	$ 101

The balance of financing receivables that were acquired with deteriorated credit quality.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (h)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524

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- Definition

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- Definition

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+ References

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- Definition

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+ References

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- Definition

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+ References

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- Definition

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- Definition

Financing Receivables Acquired with Deteriorated Credit Quality by Days Past Due.

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