v3.26.1
Other Comprehensive Income, Summary of Other Comprehensive Income (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Debt securities:    
Net unrealized gains (losses) arising during the period, Before tax $ (1,281) $ 2,256
Net unrealized gains (losses) arising during the period, Tax effect 317 (556)
Net unrealized gains (losses) arising during the period, Net of tax (964) 1,700
Reclassification of net (gains) losses to net income, Before tax 108 (29)
Reclassification of net (gains) losses to net income, Tax effect (27) 7
Reclassification of net (gains) losses to net income, Net of tax 81 (22)
Net change, Before tax (1,173) 2,227
Net change, Tax effect 290 (549)
Net change, Net of tax (883) 1,678
Cash Flow Hedges:    
Net change, Before tax (465) 593
Net change, Tax effect 115 (147)
Net change, Net of tax (350) 446
Defined benefit plans adjustments:    
Net actuarial and prior service gains (losses) arising during the period, Before tax 0 0
Net actuarial and prior service gains (losses) arising during the period, Tax effect 0 0
Net actuarial and prior service gains (losses) arising during the period, Net of tax 0 0
Reclassification of amounts to noninterest expense, Before tax 24 25
Reclassification of amounts to noninterest expense, Tax effect (5) (5)
Reclassification of amounts to noninterest expense, Net of tax 19 20
Net change, Before tax 24 25
Net change, Tax effect (5) (5)
Net change, Net of tax 19 20
Debit valuation adjustment (DVA):    
Net unrealized gains (losses) arising during period, Before tax 68 11
Net unrealized gains (losses) arising during period, Tax effect (17) (3)
Net unrealized gains (losses) arising during period, Net of tax 51 8
Reclassification of net (gains) losses to net income, Before tax 0 0
Reclassification of net (gains) losses to net income, Tax effect 0 0
Reclassification of net (gains) losses to net income, Net of tax 0 0
Net change, Before tax 68 11
Net change, Tax effect (17) (3)
Net change, net of tax 51 8
Foreign currency translation adjustments:    
Net unrealized gains (losses) arising during the period, Before tax (85) 27
Net unrealized gains (losses) arising during the period, Tax effect (1) 0
Net unrealized gains (losses) arising during the period, Net of tax (86) 27
Reclassification of net (gains) losses to net income, Before tax 0 0
Reclassification of net (gains) losses to net income, Tax 0 0
Reclassification of net (gains) losses to net income, Net of Tax 0 0
Net change, Before tax (85) 27
Net change, Tax effect (1) 0
Net change, Net of tax (86) 27
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]    
Other comprehensive income (loss), Before tax (1,631) 2,883
Other comprehensive income (loss), Tax effect 382 (704)
Other comprehensive income (loss), net of tax (1,249) 2,179
Noncontrolling interests [Member]    
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]    
Other comprehensive income (loss), net of tax 0 1
Total Wells Fargo stockholders' equity [Member]    
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]    
Other comprehensive income (loss), net of tax (1,249) 2,178
Fair value hedging [Member]    
Fair Value Hedges:    
Change in fair value of excluded components, Before tax 12 7
Change in fair value of excluded components, Tax (3) (2)
Change in fair value of excluded components, Net of tax 9 5
Cash flow hedging [Member]    
Cash Flow Hedges:    
Net unrealized gains (losses) arising during the period, Before Tax (557) 444
Net unrealized gains (losses) arising during the period, Tax 137 (110)
Net unrealized gains (losses) arising during the period, Net of Tax (420) 334
Reclassification of net (gains) losses to net income on cash flow hedges, Before tax 80 142
Reclassification of net (gains) losses to net income on cash flow hedges, Tax (19) (35)
Reclassification of net (gains) losses to net income on cash flow hedges, Net of tax $ 61 $ 107