Other Comprehensive Income, Summary of Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Debt securities:
Net unrealized gains (losses) arising during the period, Before tax	$ (3,373)	$ (447)	$ (15,067)	$ (2,187)
Net unrealized gains (losses) arising during the period, Tax effect	829	112	3,709	544
Net unrealized gains (losses) arising during the period, Net of tax	(2,544)	(335)	(11,358)	(1,643)
Reclassification of net (gains) losses to net income, Before tax	180	(175)	242	(57)
Reclassification of net (gains) losses to net income, Tax effect	(44)	42	(60)	11
Reclassification of net (gains) losses to net income, Net of tax	136	(133)	182	(46)
Net change, Before tax	(3,193)	(622)	(14,825)	(2,244)
Net change, Tax effect	785	154	3,649	555
Net change, Net of tax	(2,408)	(468)	(11,176)	(1,689)
Cash Flow Hedges:
Net change, Before tax	(1,476)	50	(1,560)	134
Net change, Tax effect	365	(12)	386	(33)
Net change, Net of tax	(1,111)	38	(1,174)	101
Defined benefit plans adjustments:
Net actuarial and prior service gains (losses) arising during the period, Before tax	(143)	(224)	(244)	133
Net actuarial and prior service gains (losses) arising during the period, Tax effect	36	55	61	(33)
Net actuarial and prior service gains (losses) arising during the period, Net of tax	(107)	(169)	(183)	100
Reclassification of amounts to noninterest expense, Before tax	77	63	243	194
Reclassification of amounts to noninterest expense, Tax effect	(19)	(15)	(59)	(46)
Reclassification of amounts to noninterest expense, Net of tax	58	48	184	148
Net change, Before tax	(66)	(161)	(1)	327
Net change, Tax effect	17	40	2	(79)
Net change, Net of tax	(49)	(121)	1	248
Debit valuation adjustment (DVA):
Net unrealized gains (losses) arising during period, Before tax	10	0	16	0
Net unrealized gains (losses) arising during period, Tax effect	(2)	0	(4)	0
Net unrealized gains (losses) arising during period, Net of tax	8	0	12	0
Reclassification of net (gains) losses to net income, Before tax	0	0	0	0
Reclassification of net (gains) losses to net income, Tax effect	0	0	0	0
Reclassification of net (gains) losses to net income, Net of tax	0	0	0	0
Net change, Before tax	10	0	16	0
Net change, Tax effect	(2)	0	(4)	0
Net change, net of tax	8	0	12	0
Foreign currency translation adjustments:
Net unrealized gains (losses) arising during the period, Before tax	(174)	(66)	(301)	(30)
Net unrealized gains (losses) arising during the period, Tax effect	0	2	(2)	(1)
Net unrealized gains (losses) arising during the period, Net of tax	(174)	(64)	(303)	(31)
Reclassification of net (gains) losses to net income, Before tax	0	0	0	0
Reclassification of net (gains) losses to net income, Tax	0	0	0	0
Reclassification of net (gains) losses to net income, Net of Tax	0	0	0	0
Net change, Before tax	(174)	(66)	(301)	(30)
Net change, Tax effect	0	2	(2)	(1)
Net change, Net of tax	(174)	(64)	(303)	(31)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Other comprehensive income (loss), Before tax	(4,899)	(799)	(16,671)	(1,813)
Other comprehensive income (loss), Tax effect	1,165	184	4,031	442
Other comprehensive income (loss), after tax	(3,734)	(615)	(12,640)	(1,371)
Noncontrolling interests [Member]
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Other comprehensive income (loss), after tax	2	(2)	2	0
Total Wells Fargo stockholders' equity [Member]
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]
Other comprehensive income (loss), after tax	(3,736)	(613)	(12,642)	(1,371)
Fair value hedging [Member]
Fair Value Hedges:
Change in fair value of excluded components on fair value hedges, Before tax	30	29	140	40
Change in fair value of excluded components on fair value hedges, Tax	(7)	(6)	(34)	(9)
Change in fair value of excluded components on fair value hedges, Net of tax	23	23	106	31
Cash flow hedging [Member]
Cash Flow Hedges:
Net unrealized gains (losses) arising during the period on cash flow hedges, Before Tax	(1,482)	(7)	(1,647)	(27)
Net unrealized gains (losses) arising during the period on cash flow hedges, Tax	366	1	407	6
Net unrealized gains (losses) arising during the period on cash flow hedges, Net of Tax	(1,116)	(6)	(1,240)	(21)
Reclassification of net (gains) losses to net income on cash flow hedges, Before tax	(24)	28	(53)	121
Reclassification of net (gains) losses to net income on cash flow hedges, Tax	6	(7)	13	(30)
Reclassification of net (gains) losses to net income on cash flow hedges, Net of tax	$ (18)	$ 21	$ (40)	$ 91