Other Comprehensive Income, Cumulative OCI Balances (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cumulative OCI balances [Abstract]
Balance, beginning of period	$ 190,110	$ 185,712
Other comprehensive income (loss), after tax	(5,065)	(1,443)
Balance, end of period	181,689	188,034
AOCI including portion attributable to noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(5,176)	(1,498)
Amounts reclassified from accumulated other comprehensive income	111	55
Other comprehensive income (loss), after tax	(5,065)	(1,443)
Debt securities [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(5,191)	(1,512)
Amounts reclassified from accumulated other comprehensive income	43	(13)
Other comprehensive income (loss), after tax	(5,148)	(1,525)
Fair value hedges [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	48	19
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss), after tax	48	19
Cash flow hedges [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(38)	(23)
Amounts reclassified from accumulated other comprehensive income	10	40
Other comprehensive income (loss), after tax	(28)	17
Defined benefit plans adjustments [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	14	7
Amounts reclassified from accumulated other comprehensive income	58	28
Other comprehensive income (loss), after tax	72	35
Debit valuation adjustments (DVA) [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(3)	0
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss), after tax	(3)	0
Foreign currency translation adjustments [Member]
Cumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period	(6)	11
Amounts reclassified from accumulated other comprehensive income	0	0
Other comprehensive income (loss), after tax	(6)	11
Total Wells Fargo stockholders' equity [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	(5,065)	(1,444)
Cumulative other comprehensive income, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(1,702)	194
Other comprehensive income (loss), after tax	(5,065)	(1,444)
Balance, end of period	(6,767)	(1,250)
Debt securities, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	665	3,039
Balance, end of period	(4,483)	1,514
Fair value hedges, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(143)	(204)
Balance, end of period	(95)	(185)
Cash flow hedges, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(27)	(125)
Balance, end of period	(55)	(108)
Defined benefit plans adjustments, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(2,055)	(2,404)
Balance, end of period	(1,983)	(2,369)
Debit valuation adjustment (DVA), Attributable to Parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	0	0
Balance, end of period	(3)	0
Foreign currency translation adjustments, parent [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	(142)	(112)
Balance, end of period	(148)	(102)
Noncontrolling interests [Member]
Cumulative OCI balances [Abstract]
Balance, beginning of period	2,504	1,032
Other comprehensive income (loss), after tax	0	1
Balance, end of period	2,446	1,130
Cumulative other comprehensive income, noncontrolling Interests [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	1
Debt securities, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0
Fair value hedges, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0
Cash flow hedges, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0
Defined benefit plans adjustments, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0
Debit valuation adjustment (DVA) [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	0	0
Foreign currency translation adjustments, noncontrolling interest [Member]
Cumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax	$ 0	$ 1