Securitizations and Variable Interest Entities, Balance Sheet Transactions with VIEs (Details) - USD ($) $ in Millions		Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		$ 20,880	$ 23,551
Interest-earning deposits with banks		143,547	149,736
Trading debt securities		70,208	69,989
Available-for-sale, at fair value		265,983	269,912
Held-to-maturity, at cost (fair value $147,864 and $142,115)		145,876	144,788
Loans	[1]	949,878	953,110
Mortgage servicing rights		12,096	14,649
Derivative assets		13,162	10,770
Equity securities	[1]	61,537	55,148
Other assets		76,358	79,850
Total assets	[2]	1,923,388	1,895,883
Short-term borrowings		115,344	105,787
Derivative liabilities		8,399	8,499
Accrued expenses and other liabilities		69,706	69,317
Long-term debt		241,476	229,044
Total liabilities	[3]	1,723,351	1,698,817
Noncontrolling interests		995	900
VIEs that we consolidate recourse [member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Total liabilities		0	0
VIEs that we do not consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Interest-earning deposits with banks		0	0
Trading debt securities		2,072	2,110
Available-for-sale, at fair value		1,879	2,686
Held-to-maturity, at cost (fair value $147,864 and $142,115)		560	510
Loans		1,214	1,433
Mortgage servicing rights		12,354	14,761
Derivative assets		143	53
Equity securities		11,211	11,041
Other assets		0	0
Total assets		29,433	32,594
Short-term borrowings		0	0
Derivative liabilities		1	26
Accrued expenses and other liabilities		198	231
Long-term debt		3,857	3,870
Total liabilities		4,056	4,127
Noncontrolling interests		0	0
Net assets		25,377	28,467
VIEs that we consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		11	139
Interest-earning deposits with banks		8	8
Trading debt securities		60	45
Available-for-sale, at fair value		0	0
Held-to-maturity, at cost (fair value $147,864 and $142,115)		0	0
Loans		13,602	13,564
Mortgage servicing rights		0	0
Derivative assets		0	0
Equity securities		121	85
Other assets		208	221
Total assets		14,010	14,062
Short-term borrowings		0	0
Derivative liabilities		1	0
Accrued expenses and other liabilities		201	191
Long-term debt		748	816
Total liabilities		950	1,007
Noncontrolling interests		41	34
Net assets		13,019	13,021
Transfers that we account for as secured borrowings [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Interest-earning deposits with banks		0	0
Trading debt securities		200	200
Available-for-sale, at fair value		68	317
Held-to-maturity, at cost (fair value $147,864 and $142,115)		0	0
Loans		87	94
Mortgage servicing rights		0	0
Derivative assets		0	0
Equity securities		0	0
Other assets		2	6
Total assets		357	617
Short-term borrowings		263	493
Derivative liabilities		0	0
Accrued expenses and other liabilities		2	8
Long-term debt		85	93
Total liabilities		350	594
Noncontrolling interests		0	0
Net assets		7	23
Total VIE [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		11	139
Interest-earning deposits with banks		8	8
Trading debt securities		2,332	2,355
Available-for-sale, at fair value		1,947	3,003
Held-to-maturity, at cost (fair value $147,864 and $142,115)		560	510
Loans		14,903	15,091
Mortgage servicing rights		12,354	14,761
Derivative assets		143	53
Equity securities		11,332	11,126
Other assets		210	227
Total assets		43,800	47,273
Short-term borrowings		263	493
Derivative liabilities		2	26
Accrued expenses and other liabilities		401	430
Long-term debt		4,690	4,779
Total liabilities		5,356	5,728
Noncontrolling interests		41	34
Net assets		$ 38,403	$ 41,511

[1] (1) Parenthetical amounts represent assets and liabilities that we are required to carry at fair value or have elected the fair value option.

[2] (2) Our consolidated assets at June 30, 2019, and December 31, 2018, include the following assets of certain variable interest entities (VIEs) that can only be used to settle the liabilities of those VIEs: Cash and due from banks, $11 million and $139 million; Interest-earning deposits with banks, $8 million and $8 million; Debt securities, $60 million and $45 million; Net loans, $13.6 billion and $13.6 billion; Equity securities, $121 million and $85 million; Other assets, $208 million and $221 million; and Total assets, $14.0 billion and $14.1 billion, respectively.

[3] (3) Our consolidated liabilities at June 30, 2019, and December 31, 2018, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $1 million and $0 million; Accrued expenses and other liabilities, $201 million and $191 million; Long-term debt, $748 million and $816 million; and Total liabilities, $950 million and $1.0 billion, respectively.