Equity Securities (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Equity Securities [Line Items]
Equity securities, carried at fair value	$ 36,362	$ 39,098
Equity securities	70,755	72,886
Related to trading activities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value	34,203	27,476
Related to trading activities [Member] \| Marketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value	23,739	27,476
Related to trading activities [Member] \| Nonmarketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value	10,464	0
Not held for trading [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value	2,159	11,622
Equity securities	36,552	45,410
Not held for trading [Member] \| Marketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value	2,027	2,578
Not held for trading [Member] \| Nonmarketable equity securities [Member]
Equity Securities [Line Items]
Equity securities, carried at fair value	132	9,044
Not held for trading [Member] \| Equity method investments [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	8,359	8,196
Not held for trading [Member] \| Private equity [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	2,972	3,077
Not held for trading [Member] \| Tax-advantaged renewable energy [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	5,018	4,740
Not held for trading [Member] \| New market tax credit and other [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	369	379
Not held for trading [Member] \| Low-income housing tax credit investments [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	12,199	12,314
Not held for trading [Member] \| Other method investments - Private equity [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	10,251	9,694
Not held for trading [Member] \| Federal Reserve Bank stock and other at cost [Member]
Equity Securities [Line Items]
Equity securities, not carried at fair value	$ 3,584	$ 3,584

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI) and investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

+ Details

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

- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

+ References

+ Details

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

- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

+ Details

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

- Definition

Line Items for Equity Securities

+ References

No definition available.

+ Details

Name:	wfc_EquitySecuritiesLineItems
Namespace Prefix:	wfc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TradingActivityByTypeAxis=wfc_HeldforTradingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=wfc_MarketableEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=wfc_NonmarketableEquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TradingActivityByTypeAxis=wfc_NotHeldforTradingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_EquityMethodInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_PrivateEquityFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=wfc_TaxAdvantagedRenewableEnergyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=wfc_NewMarketTaxCreditandOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=wfc_LowIncomeHousingTaxCreditProportionalAmortizationMethodInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_OtherAggregatedInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=wfc_InvestmentinFederalReserveBankStockandOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: