Other Comprehensive Income, Accumulated OCI Balances (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022		Jun. 30, 2023		Jun. 30, 2022
Accumulative OCI balances [Abstract]
Balance, beginning of period		$ 183,220	$ 181,597	[1]	$ 182,213	[2]	$ 189,889
Other comprehensive income (loss), after tax		(868)	(3,769)	[1]	(79)		(8,821)	[2]
Balance, end of period		181,952	179,798		181,952		179,798
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		3,700	3,400		3,700		3,400
Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period							190,110
Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	[2]						(221)
AOCI including portion attributable to noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		(1,139)	(3,808)		(547)		(8,971)
Amounts reclassified from accumulated other comprehensive income (loss)		271	39		468		150
Other comprehensive income (loss), after tax		(868)	(3,769)		(79)		(8,821)
Debt securities [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		(419)	(3,623)		(148)		(8,814)
Amounts reclassified from accumulated other comprehensive income (loss)		111	3		202		46
Other comprehensive income (loss), after tax		(308)	(3,620)		54		(8,768)
Fair value hedges [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		4	35		8		83
Amounts reclassified from accumulated other comprehensive income (loss)		0	0		0		0
Other comprehensive income (loss), after tax		4	35		8		83
Cash flow hedges [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		(753)	(86)		(464)		(124)
Amounts reclassified from accumulated other comprehensive income (loss)		139	(32)		224		(22)
Other comprehensive income (loss), after tax		(614)	(118)		(240)		(146)
Defined benefit plans adjustments [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		0	(90)		0		(76)
Amounts reclassified from accumulated other comprehensive income (loss)		21	68		42		126
Other comprehensive income (loss), after tax		21	(22)		42		50
Debit valuation adjustments (DVA) [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		(10)	80		(7)		89
Amounts reclassified from accumulated other comprehensive income (loss)		0	0		0		0
Other comprehensive income (loss), after tax		(10)	80		(7)		89
Foreign currency translation adjustments [Member]
Accumulative OCI balances [Abstract]
Net unrealized gains (losses) arising during the period		39	(124)		64		(129)
Amounts reclassified from accumulated other comprehensive income (loss)		0	0		0		0
Other comprehensive income (loss), after tax		39	(124)		64		(129)
Total Wells Fargo stockholders' equity [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax		(869)	(3,769)		(79)		(8,822)
Accumulative other comprehensive income, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		(12,572)	(6,799)	[1]	(13,362)	[2]	(1,746)
Other comprehensive income (loss), after tax		(869)	(3,769)	[1]	(79)		(8,822)	[2]
Balance, end of period		(13,441)	(10,568)		(13,441)		(10,568)
Accumulative other comprehensive income, parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(6,767)		(13,382)		(1,702)
Accumulative other comprehensive income, parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(32)		20		(44)	[2]
Debt securities, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		(9,473)	(4,483)		(9,835)		665
Balance, end of period		(9,781)	(8,103)		(9,781)		(8,103)
Debt securities, parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(4,483)		(9,835)		665
Debt securities, parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			0		0		0
Fair value hedges, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		(73)	(95)		(77)		(143)
Balance, end of period		(69)	(60)		(69)		(60)
Fair value hedges, parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(95)		(77)		(143)
Fair value hedges, parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			0		0		0
Cash flow hedges, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		(809)	(55)		(1,183)		(27)
Balance, end of period		(1,423)	(173)		(1,423)		(173)
Cash flow hedges, parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(55)		(1,183)		(27)
Cash flow hedges, parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			0		0		0
Defined benefit plans adjustments, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		(1,880)	(1,983)		(1,901)		(2,055)
Balance, end of period		(1,859)	(2,005)		(1,859)		(2,005)
Defined benefit plans adjustments, parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(1,983)		(1,901)		(2,055)
Defined benefit plans adjustments, parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			0		0		0
Debit valuation adjustment (DVA), Attributable to Parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		17	(35)		14		(44)
Balance, end of period		7	45		7		45
Debit valuation adjustment (DVA), Attributable to Parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(3)		(6)		0
Debit valuation adjustment (DVA), Attributable to Parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(32)		20		(44)
Foreign currency translation adjustments, parent [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		(354)	(148)		(380)		(142)
Balance, end of period		(316)	(272)		(316)		(272)
Foreign currency translation adjustments, parent [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			(148)		(380)		(142)
Foreign currency translation adjustments, parent [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period			0		0		0
Noncontrolling interests [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period		2,052	2,446	[1]	1,986	[2]	2,503
Other comprehensive income (loss), after tax		1	0	[1]	0		1	[2]
Balance, end of period		1,761	2,262		1,761		2,262
Noncontrolling interests [Member] | Previously reported [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period							2,504
Noncontrolling interests [Member] | Revision of prior period, accounting standards update, adjustment [Member] | Accounting Standards Update 2018-12 Retrospective [Member]
Accumulative OCI balances [Abstract]
Balance, beginning of period	[2]						(1)
Cumulative other comprehensive income, noncontrolling Interests [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax		1	0		0		1
Debt securities, noncontrolling interest [Member]
Accumulative OCI balances [Abstract]
Other comprehensive income (loss), after tax		0	0		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		$ 1	$ 0		$ 0		$ 1

[1] In first quarter 2023, we adopted ASU 2018-12 – Financial Services – Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts. For additional information, see Note 1 (Summary of Significant Accounting Policies).

[2] In first quarter 2023, we adopted ASU 2018-12 – Financial Services – Insurance (Topic 944): Targeted Improvements to the Accounting for Long-Duration Contracts. For additional information, see Note 1 (Summary of Significant Accounting Policies).