Guarantees - Carrying Value and Maximum Exposure to Loss (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2023	Dec. 31, 2022
Guarantor Obligations [Line Items]
Carrying value of obligation		$ 124	$ 141
Maximum exposure to loss, Expires in one year or less		25,771	21,100
Maximum exposure to loss, Expires after one year through three years		8,901	8,507
Maximum exposure to loss, Expires after three years through five years		6,901	6,941
Maximum exposure to loss, Expires after five years		8,093	9,165
Maximum exposure to loss		49,666	45,713
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		$ 49,666	45,713
Description of guarantees given by registrant		The Parent fully and unconditionally guarantees the payment of principal, interest, and any other amounts that may be due on securities that its 100% owned finance subsidiary, Wells Fargo Finance LLC, may issue.
Liabilities	[1]	$ 1,726,888	1,698,807
Written options [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		38,300	23,400
Guarantees Obligations Textual [Abstract]
Carrying value of obligation (asset)		(127)	15
Maximum exposure for loss		38,300	23,400
Maximum exposure to loss, Expires in three years or less		35,400	21,300
Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		19,870	20,268
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		19,870	20,268
Standby letters of credit [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation		90	112
Maximum exposure to loss, Expires in one year or less		15,105	14,014
Maximum exposure to loss, Expires after one year through three years		4,237	4,694
Maximum exposure to loss, Expires after three years through five years		3,129	3,058
Maximum exposure to loss, Expires after five years		13	53
Maximum exposure to loss		22,484	21,819
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		22,484	21,819
Standby letters of credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		7,441	7,071
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		7,441	7,071
Direct pay letters of credit [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation		10	13
Maximum exposure to loss, Expires in one year or less		1,242	1,593
Maximum exposure to loss, Expires after one year through three years		2,480	2,734
Maximum exposure to loss, Expires after three years through five years		371	465
Maximum exposure to loss, Expires after five years		5	5
Maximum exposure to loss		4,098	4,797
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		4,098	4,797
Direct pay letters of credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		922	1,283
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		922	1,283
Loans and LHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation		24	16
Maximum exposure to loss, Expires in one year or less		192	322
Maximum exposure to loss, Expires after one year through three years		2,176	1,078
Maximum exposure to loss, Expires after three years through five years		3,400	3,408
Maximum exposure to loss, Expires after five years		7,980	8,906
Maximum exposure to loss		13,748	13,714
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		13,748	13,714
Loans and LHFS sold with recourse [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		10,870	11,399
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		10,870	11,399
Exchange and clearing house guarantees [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation		0	0
Maximum exposure to loss, Expires in one year or less		8,548	4,623
Maximum exposure to loss, Expires after one year through three years		0	0
Maximum exposure to loss, Expires after three years through five years		0	0
Maximum exposure to loss, Expires after five years		0	0
Maximum exposure to loss		8,548	4,623
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		8,548	4,623
Exchange and clearing house guarantees [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		0	0
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		0	0
Other guarantees and indemnifications [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation		0	0
Maximum exposure to loss, Expires in one year or less		684	548
Maximum exposure to loss, Expires after one year through three years		8	1
Maximum exposure to loss, Expires after three years through five years		1	10
Maximum exposure to loss, Expires after five years		95	201
Maximum exposure to loss		788	760
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		788	760
Other guarantees and indemnifications [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		637	515
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		637	515
Third party clearing indemnifications [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		52	157
Collateral provided to third-party clearing agents		558	1,300
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		52	157
Debit and credit card [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		780,000
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		780,000
Other commitments and guarantees [Member] | Wells Fargo Finance, LLC [Member]
Guarantees Obligations Textual [Abstract]
Liabilities		826	$ 948
Indemnification Agreement [Member] | Mortgage Service Rights [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation		10
Maximum exposure to loss		844
Guarantees Obligations Textual [Abstract]
Maximum exposure for loss		844
Maximum exposure to loss, Expires in three years or less		$ 609

[1] Our consolidated liabilities at September 30, 2023, and December 31, 2022, include $129 million and $201 million, respectively, of VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo