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=7512638&loc=SL6953423-111524

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are less than 60 days past due but more than 29 days past due.

+ 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=7512638&loc=SL6953401-111524

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are less than 90 days past due but more than 59 days past due.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are current.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The balance of financing receivables that were acquired with deteriorated credit quality, adjusted for writedowns, and before deduction of accretable yield and nonaccretable difference.

+ References

No definition available.

+ Details

Name:	wfc_FinancingReceivableAcquiredWithDeterioratedCreditQualityGross
Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are less than 180 days past due but more than 119 days past due.

+ References

No definition available.

+ Details

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Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are less than 120 days past due but more than 89 days past due.

+ References

No definition available.

+ Details

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Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables that are equal to or greater than 180 days past due.

+ References

No definition available.

+ Details

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Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
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Loans and Allowance for Credit Losses, PCI, by Delinquency Status, Consumer (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Purchased Credit Impaired Loans (carrying value)	$ 30,968	$ 36,719	$ 41,430	$ 51,705	$ 58,797
Residential Mortgage [Member]
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Purchased Credit Impaired Loans (carrying value)	26,991	29,952
Residential Mortgage [Member] \| Purchased Credit-Impaired Loans [Member]
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Current-29 DPD	22,502	25,961
30-59 DPD	2,598	3,292
60-89 DPD	1,368	1,442
90-119 DPD	656	799
120-179 DPD	811	1,179
180+ DPD	5,472	6,071
Total consumer PCI loans (adjusted unpaid principal balance)	33,407	38,744
Purchased Credit Impaired Loans (carrying value)	26,991	29,952
Real estate 1-4 family first mortgage [Member]
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Purchased Credit Impaired Loans (carrying value)	26,839	29,746	33,245	38,386	39,214
Real estate 1-4 family first mortgage [Member] \| Purchased Credit-Impaired Loans [Member]
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Current-29 DPD	22,304	25,693
30-59 DPD	2,587	3,272
60-89 DPD	1,361	1,433
90-119 DPD	650	791
120-179 DPD	804	1,169
180+ DPD	5,356	5,921
Total consumer PCI loans (adjusted unpaid principal balance)	33,062	38,279
Purchased Credit Impaired Loans (carrying value)	26,839	29,746
Real estate 1-4 family junior lien mortgage [Member]
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Purchased Credit Impaired Loans (carrying value)	152	206	250	331	728
Real estate 1-4 family junior lien mortgage [Member] \| Purchased Credit-Impaired Loans [Member]
Purchased Credit Impaired Loans by Consumer Days Past Due [Abstract]
Current-29 DPD	198	268
30-59 DPD	11	20
60-89 DPD	7	9
90-119 DPD	6	8
120-179 DPD	7	10
180+ DPD	116	150
Total consumer PCI loans (adjusted unpaid principal balance)	345	465
Purchased Credit Impaired Loans (carrying value)	$ 152	$ 206