Guarantees - Carrying Value and Maximum Exposure to Loss (Details) - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2022	Dec. 31, 2021
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		$ 870	$ (135)
Maximum exposure to loss, Expires in one year or less		31,791	28,388
Maximum exposure to loss, Expires after one year through three years		14,378	12,917
Maximum exposure to loss, Expires after three years through five years		7,423	6,990
Maximum exposure to loss, Expires after five years		14,415	17,513
Maximum exposure to loss		$ 68,007	65,808
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]	$ 1,699,336	1,757,958
Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		37,072	33,981
Written options [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		725	(280)
Maximum exposure to loss, Expires in one year or less		14,127	12,107
Maximum exposure to loss, Expires after one year through three years		6,779	4,575
Maximum exposure to loss, Expires after three years through five years		1,399	513
Maximum exposure to loss, Expires after five years		460	36
Maximum exposure to loss		22,765	17,231
Written options [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		17,171	13,645
Standby letters of credit [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		116	119
Maximum exposure to loss, Expires in one year or less		15,299	13,816
Maximum exposure to loss, Expires after one year through three years		4,170	5,260
Maximum exposure to loss, Expires after three years through five years		2,064	1,572
Maximum exposure to loss, Expires after five years		432	460
Maximum exposure to loss		21,965	21,108
Standby letters of credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		6,557	6,939
Direct pay letters of credit [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		13	6
Maximum exposure to loss, Expires in one year or less		1,480	1,597
Maximum exposure to loss, Expires after one year through three years		2,512	2,137
Maximum exposure to loss, Expires after three years through five years		464	1,283
Maximum exposure to loss, Expires after five years		6	4
Maximum exposure to loss		4,462	5,021
Direct pay letters of credit [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		1,360	1,373
Loans and LHFS sold with recourse [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		16	20
Maximum exposure to loss, Expires in one year or less		302	71
Maximum exposure to loss, Expires after one year through three years		916	943
Maximum exposure to loss, Expires after three years through five years		3,486	3,610
Maximum exposure to loss, Expires after five years		8,896	8,650
Maximum exposure to loss		13,600	13,274
Loans and LHFS sold with recourse [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		11,457	11,268
Exchange and clearing house guarantees [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		0	0
Maximum exposure to loss, Expires in one year or less		0	0
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		4,438	8,100
Maximum exposure to loss		4,438	8,100
Exchange and clearing house guarantees [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		0	0
Other guarantees and indemnifications [Member]
Guarantor Obligations [Line Items]
Carrying value of obligation (asset)		0	0
Maximum exposure to loss, Expires in one year or less		583	797
Maximum exposure to loss, Expires after one year through three years		1	2
Maximum exposure to loss, Expires after three years through five years		10	12
Maximum exposure to loss, Expires after five years		183	263
Maximum exposure to loss		777	1,074
Other guarantees and indemnifications [Member] | Non-investment grade [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		527	756
Third party clearing indemnifications [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		138	216
Collateral provided to third-party clearing agents		1,400	2,300
Other commitments and guarantees [Member] | Wells Fargo Finance, LLC [Member]
Guarantor Obligations [Line Items]
Liabilities		1,000	$ 1,200
Debit and credit card [Member]
Guarantor Obligations [Line Items]
Maximum exposure to loss		$ 749,900

[1] Our consolidated liabilities at September 30, 2022, and December 31, 2021, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Long-term debt, $0 million and $149 million; All other liabilities, $235 million and $259 million; and Total liabilities, $235 million and $408 million, respectively.