Loans by Loan to Value Ratio, Consumer (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]
Purchased Credit Impaired Loans, Carrying Value	$ 38,693	$ 41,430
Loans	751,921	757,267
Residential Mortgage [Member]
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]
0-60%	59,123	62,622
60.01-80%	60,081	60,286
80.01-100%	60,202	63,752
100.01-120%	39,546	42,034
Greater than 120%	39,827	42,871
No LTV/CLTV Available	6,641	5,810
Government insured/guaranteed loans	15,724	15,514
Loans, excluding Purchased Credit Impaired Loans	281,144	292,889
Purchased Credit Impaired Loans, Carrying Value	31,677	33,495
Loans	312,821	326,384
Real estate 1-4 family first mortgage [Member]
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]
0-60%	45,661	47,808
60.01-80%	43,602	42,542
80.01-100%	38,982	39,497
100.01-120%	22,913	24,147
Greater than 120%	20,814	24,243
No LTV/CLTV Available	3,730	3,239
Government insured/guaranteed loans	15,724	15,514
Loans, excluding Purchased Credit Impaired Loans	191,426	196,990
Purchased Credit Impaired Loans, Carrying Value	31,448	33,245
Loans	222,874	230,235
Real estate 1-4 family junior lien mortgage [Member]
Loans by Loan to Value, Excluding Purchased Credit Impaired Loans [Abstract]
0-60%	13,462	14,814
60.01-80%	16,479	17,744
80.01-100%	21,220	24,255
100.01-120%	16,633	17,887
Greater than 120%	19,013	18,628
No LTV/CLTV Available	2,911	2,571
Government insured/guaranteed loans	0	0
Loans, excluding Purchased Credit Impaired Loans	89,718	95,899
Purchased Credit Impaired Loans, Carrying Value	229	250
Loans	$ 89,947	$ 96,149

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
-URI http://asc.fasb.org/extlink&oid=6965416&loc=SL6953423-111524
-Subparagraph (h)

+ Details

Name:	us-gaap_FinancingReceivableAcquiredWithDeterioratedCreditQuality
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects the aggregate gross carrying amount of all categories of loans and leases held in portfolio, after deducting deferred income, but before deducting the allowance for losses on loans and leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5074-111524

Reference 2: 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=6375948&loc=d3e4428-111522

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 13
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-DEP
-Chapter 8
-Paragraph 116
-IssueDate 2006-05-01
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher OTS
-Name Federal Regulation (FR)
-Number Title 12
-Chapter V
-Section 563c.102
-Paragraph 8
-Subparagraph e
-Subsection I
-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects the net carrying amount of loans and leases held in portfolio, not otherwise defined in the taxonomy, after deducting deferred income, but before deducting the allowance for losses on such loans and leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6965416&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 01-6
-Paragraph 13
-Subparagraph e
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Audit and Accounting Guide (AAG)
-Number AAG-DEP
-Chapter 8
-Paragraph 116
-IssueDate 2006-05-01
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher OTS
-Name Federal Regulation (FR)
-Number Title 12
-Chapter V
-Section 563c.102
-Paragraph 8
-Subparagraph e
-Subsection I
-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_LoansAndLeasesReceivableOtherNetOfDeferredIncome
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivable government insured or guaranteed.

+ Details

Name:	wfc_FinancingReceivableGovernmentInsuredOrGuaranteed
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables with no loan to value ratio or combined loan to value ratio available.

+ Details

Name:	wfc_FinancingReceivableRecordedInvestmentLoanToValueAndCombinedLoanToValueRatioNotAvailable
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing Receivable Recorded Investment Loan To Value Ratio Eighty Point Zero One To Hundred Percent.

+ Details

Name:	wfc_FinancingReceivableRecordedInvestmentLoanToValueRatioEightyPointZeroOneToHundredPercent
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables with loan to value ratio greater than 120 percent.

+ Details

Name:	wfc_FinancingReceivableRecordedInvestmentLoanToValueRatioGreaterThan120Percent
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing receivables with loan to value ratio less than 60 percent.

+ Details

Name:	wfc_FinancingReceivableRecordedInvestmentLoanToValueRatioLessThan60Percent
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing Receivable Recorded Investment Loan To Value Ratio Less Than Hundred Point Zero One To One Hundred Twenty Percent.

+ Details

Name:	wfc_FinancingReceivableRecordedInvestmentLoanToValueRatioLessThanHundredPointZeroOneToOneHundredTwentyPercent
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

FinancingReceivableRecordedInvestmentLoanToValueRatio60Point01To80Percent.

+ Details

Name:	wfc_FinancingReceivableRecordedInvestmentLoanToValueRatioSixtyPointZeroOneToEightyPercent
Namespace Prefix:	wfc
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Financing Receivables by Loan to Value, Excluding Acquired with Deteriorated Credit Quality.

+ Details

Name:	wfc_FinancingReceivablesByLoanToValueExcludingAcquiredWithDeterioratedCreditQualityAbstract
Namespace Prefix:	wfc
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration