v3.25.4
Guarantees - Carrying Value and Maximum Exposure to Loss (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Guarantor Obligations [Line Items]    
Carrying value of obligation $ 263 $ 210
Maximum exposure to loss, Expires in one year or less 118,441 56,462
Maximum exposure to loss, Expires after one year through three years 13,121 11,587
Maximum exposure to loss, Expires after three years through five years 5,922 5,739
Maximum exposure to loss, Expires after five years 8,144 6,885
Maximum exposure to loss $ 145,628 80,673
Guarantees Obligations Textual [Abstract]    
Percentage share of losses owed on loans and MHFS sold with recourse 33.33%  
Maximum exposure for loss $ 145,628 80,673
Description of guarantees given by registrant Additionally, 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] $ 1,965,593 1,748,779
Written options [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 45,400 34,300
Guarantees Obligations Textual [Abstract]    
Carrying value of obligation (asset) (101) 88
Maximum exposure for loss 45,400 34,300
Maximum exposure to loss, Expires in three years or less 42,000 31,500
Non-investment grade [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 19,692 19,646
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 19,692 19,646
Standby letters of credit [Member]    
Guarantor Obligations [Line Items]    
Carrying value of obligation 98 90
Maximum exposure to loss, Expires in one year or less 13,967 13,311
Maximum exposure to loss, Expires after one year through three years 6,550 6,951
Maximum exposure to loss, Expires after three years through five years 1,814 1,538
Maximum exposure to loss, Expires after five years 15 17
Maximum exposure to loss 22,346 21,817
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 22,346 21,817
Standby letters of credit [Member] | Non-investment grade [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 7,315 7,198
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 7,315 7,198
Direct pay letters of credit [Member]    
Guarantor Obligations [Line Items]    
Carrying value of obligation 5 2
Maximum exposure to loss, Expires in one year or less 588 1,818
Maximum exposure to loss, Expires after one year through three years 1,836 1,051
Maximum exposure to loss, Expires after three years through five years 353 108
Maximum exposure to loss, Expires after five years 88 92
Maximum exposure to loss 2,865 3,069
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 2,865 3,069
Direct pay letters of credit [Member] | Non-investment grade [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 488 766
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 488 766
Loans and LHFS sold with recourse [Member]    
Guarantor Obligations [Line Items]    
Carrying value of obligation 91 82
Maximum exposure to loss, Expires in one year or less 1,362 593
Maximum exposure to loss, Expires after one year through three years 3,214 3,089
Maximum exposure to loss, Expires after three years through five years 3,385 3,969
Maximum exposure to loss, Expires after five years 6,378 6,223
Maximum exposure to loss 14,339 13,874
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 14,339 13,874
Loans and LHFS sold with recourse [Member] | Non-investment grade [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 10,910 10,660
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 10,910 10,660
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 98,106 38,852
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 98,106 38,852
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 98,106 38,852
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 69 36
Maximum exposure to loss, Expires in one year or less 4,418 1,888
Maximum exposure to loss, Expires after one year through three years 1,521 496
Maximum exposure to loss, Expires after three years through five years 370 124
Maximum exposure to loss, Expires after five years 1,663 553
Maximum exposure to loss 7,972 3,061
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 7,972 3,061
Other guarantees and indemnifications [Member] | Non-investment grade [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 979 1,022
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 979 1,022
Debit and credit card [Member]    
Guarantor Obligations [Line Items]    
Maximum exposure to loss 394,700  
Guarantees Obligations Textual [Abstract]    
Maximum exposure for loss 394,700  
Other commitments and guarantees [Member] | Wells Fargo Finance, LLC [Member]    
Guarantees Obligations Textual [Abstract]    
Liabilities $ 1,700 $ 1,300
[1] Our consolidated liabilities at December 31, 2025 and 2024, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Long-term debt, $3.8 billion and $2.2 billion; Accrued expenses and other liabilities, $206 million and $124 million; and Total liabilities $4.0 billion and $2.4 billion, respectively.