Other Comprehensive Income, Accumulated OCI Balances (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accumulative OCI balances [Abstract]
Balance, beginning of period	$ 179,793	$ 193,127	$ 190,110	$ 185,712
Other comprehensive income (loss), after tax	(3,734)	(615)	(12,640)	(1,371)
Balance, end of period	178,409	191,071	178,409	191,071
Other Comprehensive Income Textual [Abstract]
Unrealized gain (loss) in AOCI, on available-for-sale debt securities transferred to held-to-maturity debt securities, after tax	3,600	817	3,600	817
AOCI including portion attributable to noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(3,910)	(551)	(12,966)	(1,564)
Amounts reclassified from accumulated other comprehensive income	176	(64)	326	193
Other comprehensive income (loss), after tax	(3,734)	(615)	(12,640)	(1,371)
Debt securities [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(2,544)	(335)	(11,358)	(1,643)
Amounts reclassified from accumulated other comprehensive income	136	(133)	182	(46)
Other comprehensive income (loss), after tax	(2,408)	(468)	(11,176)	(1,689)
Fair value hedges [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	23	23	106	31
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), after tax	23	23	106	31
Cash flow hedges [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(1,116)	(6)	(1,240)	(21)
Amounts reclassified from accumulated other comprehensive income	(18)	21	(40)	91
Other comprehensive income (loss), after tax	(1,134)	15	(1,280)	70
Defined benefit plans adjustments [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(107)	(169)	(183)	100
Amounts reclassified from accumulated other comprehensive income	58	48	184	148
Other comprehensive income (loss), after tax	(49)	(121)	1	248
Debit valuation adjustments (DVA) [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	8	0	12	0
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), after tax	8	0	12	0
Foreign currency translation adjustments [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(174)	(64)	(303)	(31)
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Other comprehensive income (loss), after tax	(174)	(64)	(303)	(31)
Total Wells Fargo stockholders' equity [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	(3,736)	(613)	(12,642)	(1,371)
Accumulative other comprehensive income, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	(10,608)	(564)	(1,702)	194
Other comprehensive income (loss), after tax	(3,736)	(613)	(12,642)	(1,371)
Balance, end of period	(14,344)	(1,177)	(14,344)	(1,177)
Debt securities, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	(8,103)	1,817	665	3,039
Balance, end of period	(10,511)	1,350	(10,511)	1,350
Fair value hedges, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	(60)	(196)	(143)	(204)
Balance, end of period	(37)	(173)	(37)	(173)
Cash flow hedges, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	(173)	(70)	(27)	(125)
Balance, end of period	(1,307)	(55)	(1,307)	(55)
Defined benefit plans adjustments, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	(2,005)	(2,035)	(2,055)	(2,404)
Balance, end of period	(2,054)	(2,156)	(2,054)	(2,156)
Debit valuation adjustment (DVA), Attributable to Parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	4	0	0	0
Balance, end of period	12	0	12	0
Foreign currency translation adjustments, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	(271)	(80)	(142)	(112)
Balance, end of period	(447)	(143)	(447)	(143)
Noncontrolling interests [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	2,261	1,865	2,504	1,032
Other comprehensive income (loss), after tax	2	(2)	2	0
Balance, end of period	2,220	2,043	2,220	2,043
Cumulative other comprehensive income, noncontrolling Interests [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	2	(2)	2	0
Debt securities, noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	(1)	0	0
Fair value hedges, noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0	0	0
Cash flow hedges, noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0	0	0
Defined benefit plans adjustments, noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0	0	0
Debit valuation adjustment (DVA) [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0	0	0
Foreign currency translation adjustments, noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	$ 2	$ (1)	$ 2	$ 0