Revenue and Expenses, Revenue by Operating Segment (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	$ 12,096	$ 11,495
Lending-related fees	393	364
Other card fees	170	125
Total card fees	1,138	1,044
Mortgage banking	201	332
Net gains (losses) from trading activities	1,351	1,384
Net gains (losses) from debt securities	0	(147)
Net gains (losses) from equity securities	172	(343)
Other	489	802
Total noninterest income	9,350	8,654
Total revenue	21,446	20,149
Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	1,319	1,269
Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2,824	2,536
Trailing commissions [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	244	233
Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	667	638
Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	796	775
Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	968	919
Credit card rewards and rebates [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Other cost of revenue	784	667
Corporate [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	(460)	36
Lending-related fees	0	0
Other card fees	0	1
Total card fees	2	2
Mortgage banking	0	0
Net gains (losses) from trading activities	(51)	(1)
Net gains (losses) from debt securities	(1)	(149)
Net gains (losses) from equity securities	107	(350)
Other	235	303
Total noninterest income	228	(213)
Total revenue	(232)	(177)
Corporate [Member] \| Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(1)	1
Corporate [Member] \| Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Corporate [Member] \| Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(1)	0
Corporate [Member] \| Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(62)	(19)
Corporate [Member] \| Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2	1
Reconciling Items [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	(72)	(77)
Lending-related fees	0	0
Other card fees	0	0
Total card fees	0	0
Mortgage banking	0	0
Net gains (losses) from trading activities	0	0
Net gains (losses) from debt securities	0	0
Net gains (losses) from equity securities	0	0
Other	(521)	(373)
Total noninterest income	(521)	(373)
Total revenue	(593)	(450)
Reconciling Items [Member] \| Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Reconciling Items [Member] \| Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Reconciling Items [Member] \| Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Reconciling Items [Member] \| Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Reconciling Items [Member] \| Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Consumer Banking and Lending [Member] \| Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	7,551	7,039
Lending-related fees	22	16
Other card fees	170	124
Total card fees	1,064	978
Mortgage banking	163	222
Net gains (losses) from trading activities	0	0
Net gains (losses) from debt securities	0	0
Net gains (losses) from equity securities	0	(7)
Other	100	131
Total noninterest income	2,447	2,344
Total revenue	9,998	9,383
Consumer Banking and Lending [Member] \| Operating Segments [Member] \| Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	720	651
Consumer Banking and Lending [Member] \| Operating Segments [Member] \| Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	264	240
Consumer Banking and Lending [Member] \| Operating Segments [Member] \| Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	115	113
Consumer Banking and Lending [Member] \| Operating Segments [Member] \| Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	(1)	0
Consumer Banking and Lending [Member] \| Operating Segments [Member] \| Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	894	854
Commercial Banking [Member] \| Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	1,988	1,977
Lending-related fees	150	136
Other card fees	0	0
Total card fees	55	49
Mortgage banking	0	0
Net gains (losses) from trading activities	0	0
Net gains (losses) from debt securities	1	2
Net gains (losses) from equity securities	51	(5)
Other	523	381
Total noninterest income	1,132	948
Total revenue	3,120	2,925
Commercial Banking [Member] \| Operating Segments [Member] \| Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	319	335
Commercial Banking [Member] \| Operating Segments [Member] \| Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	18	21
Commercial Banking [Member] \| Operating Segments [Member] \| Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Commercial Banking [Member] \| Operating Segments [Member] \| Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	15	29
Commercial Banking [Member] \| Operating Segments [Member] \| Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	55	49
Corporate and Investment Banking [Member] \| Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	2,184	1,790
Lending-related fees	217	201
Other card fees	0	0
Total card fees	16	14
Mortgage banking	41	114
Net gains (losses) from trading activities	1,382	1,358
Net gains (losses) from debt securities	0	0
Net gains (losses) from equity securities	14	31
Other	152	371
Total noninterest income	3,094	3,274
Total revenue	5,278	5,064
Corporate and Investment Banking [Member] \| Operating Segments [Member] \| Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	274	275
Corporate and Investment Banking [Member] \| Operating Segments [Member] \| Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	39	41
Corporate and Investment Banking [Member] \| Operating Segments [Member] \| Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	115	104
Corporate and Investment Banking [Member] \| Operating Segments [Member] \| Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	844	765
Corporate and Investment Banking [Member] \| Operating Segments [Member] \| Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	16	14
Wealth and Investment Management [Member] \| Operating Segments [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net interest income (expense)	905	730
Lending-related fees	4	11
Other card fees	0	0
Total card fees	1	1
Mortgage banking	(3)	(4)
Net gains (losses) from trading activities	20	27
Net gains (losses) from debt securities	0	0
Net gains (losses) from equity securities	0	(12)
Other	0	(11)
Total noninterest income	2,970	2,674
Total revenue	3,875	3,404
Wealth and Investment Management [Member] \| Operating Segments [Member] \| Deposit-related fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	7	7
Wealth and Investment Management [Member] \| Operating Segments [Member] \| Investment advisory and other asset-based fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	2,503	2,234
Wealth and Investment Management [Member] \| Operating Segments [Member] \| Commissions and brokerage services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	438	421
Wealth and Investment Management [Member] \| Operating Segments [Member] \| Investment banking fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	0	0
Wealth and Investment Management [Member] \| Operating Segments [Member] \| Interchange and merchant services fees [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Fee income	$ 1	$ 1

Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481800/320-10-50-9

+ Details

Name:	us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Income from mortgage banking activities (fees and commissions) and servicing real estate mortgages, credit cards, and other financial assets held by others net of any related impairment of capitalized service costs. Also includes any premiums received in lieu of regular servicing fees on such loans only as earned over the life of the loans.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph b
-Subparagraph (1)
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph b
-Subparagraph (1)(Instruction 3)
-Publisher SEC

+ Details

Name:	us-gaap_FeesAndCommissionsMortgageBankingAndServicing
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of interest income (expense) classified as operating.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-21

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(10))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

Name:	us-gaap_InterestIncomeExpenseNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified.

+ References

+ Details

Name:	us-gaap_NoninterestIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue earned, classified as other, excluding interest income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_NoninterestIncomeOtherOperatingIncome
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Other costs incurred during the reporting period related to other revenue generating activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

+ Details

Name:	us-gaap_OtherCostOfOperatingRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-4

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 220
-SubTopic 40
-Name Accounting Standards Codification
-Section 55
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476153/220-40-55-14

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 8: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 9: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income after deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-41

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 270
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482964/270-10-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (ee)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 6: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-30

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-40

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-22

+ Details

Name:	us-gaap_RevenuesNetOfInterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingRevenueReconcilingItemLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss) resulting from the difference between the acquisition price and the selling price or fair value of trading assets and trading liabilities, conducted separately from customer trading activities. Includes, but is not limited to, changes in fair value of trading assets and trading liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 184
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480401/815-10-55-184

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (a)(5)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4F
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4F

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 940
-SubTopic 320
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479035/940-320-45-5

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(e))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

Name:	us-gaap_TradingGainsLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Charges and fees on loans and letter of credit fees.

+ References

No definition available.

+ Details

Name:	wfc_FeesAndCommissionsLendingActivities1
Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The revenue derived from equity securities held at fair value (excluding trading securities), and investments accounted for under both the equity method and measurement alternative. Includes marketable equity securities, private equity, and principal investments: includes realized investment gains or losses.

+ References

No definition available.

+ Details

Name:	wfc_GainLossFromEquitySecuritiesNotHeldForTrading
Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of income earned classified as other from credit card services (including late, over limit, and annual fees) and debit card services (including interchange fees, annual fees and other fees). Excludes interest income earned on credit card balances and transactions.

+ References

No definition available.

+ Details

Name:	wfc_OtherCreditAndDebitCardFees
Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of income earned from credit card services (including late, over limit, and annual fees) and debit card services (including interchange fees, annual fees and other fees). Excludes interest income earned on credit card balances and transactions.

+ References

No definition available.

+ Details

Name:	wfc_TotalCreditAndDebitCardFees
Namespace Prefix:	wfc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_DepositAccountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_InvestmentAdvisoryManagementAndAdministrativeServiceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=wfc_TrailingCommissionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=wfc_CommissionsAndBrokerageServiceFeesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_InvestmentAdviceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=us-gaap_CreditCardMerchantDiscountMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=wfc_CreditCardRewardsAndRebatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=wfc_ConsumerBankingAndLendingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=wfc_CommercialBankingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=wfc_CorporateAndInvestmentBankingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=wfc_WealthAndInvestmentManagementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: