Securitizations and Variable Interest Entities, Balance Sheet Transactions with VIEs (Details) - USD ($) $ in Millions		Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		$ 20,248	$ 20,729	$ 20,407	$ 19,111
Federal funds sold, securities purchased under resale agreements and other short-term investments		264,706	266,038
Trading assets		83,607	74,397
Investment securities		409,592	407,519
Loans	[1]	957,423	967,604
Mortgage servicing rights		12,789	12,959
Derivative assets		13,273	14,498
Other assets	[1]	118,966	114,541
Total assets	[2]	1,930,871	1,930,115
Short-term borrowings		95,356	96,781
Derivative liabilities		11,636	14,492
Accrued expenses and other liabilities		73,035	57,189
Long-term debt		238,869	255,077
Total liabilities	[3]	1,724,726	1,729,618
Noncontrolling interests		915	916
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
Federal funds sold, securities purchased under resale agreements and other short-term investments		0	0
Trading assets		1,431	2,034
Investment securities		5,145	8,530
Loans		5,456	6,698
Mortgage servicing rights		13,337	13,386
Derivative assets		77	91
Other assets		10,321	10,281
Total assets		35,767	41,020
Short-term borrowings		0	0
Derivative liabilities		92	59
Accrued expenses and other liabilities		235	306
Long-term debt		3,282	3,598
Total liabilities		3,609	3,963
Noncontrolling interests		0	0
Net assets		32,158	37,057
VIEs that we consolidate [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		112	168
Federal funds sold, securities purchased under resale agreements and other short-term investments		424	74
Trading assets		50	130
Investment securities		0	0
Loans		12,096	12,589
Mortgage servicing rights		0	0
Derivative assets		0	1
Other assets		339	452
Total assets		13,021	13,414
Short-term borrowings		0	0
Derivative liabilities		28	33
Accrued expenses and other liabilities		96	107
Long-term debt		2,835	3,694
Total liabilities		2,959	3,834
Noncontrolling interests		86	138
Net assets		9,976	9,442
Transfers that we account for as secured borrowings [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		0	0
Federal funds sold, securities purchased under resale agreements and other short-term investments		0	0
Trading assets		201	201
Investment securities		381	786
Loans		121	138
Mortgage servicing rights		0	0
Derivative assets		0	0
Other assets		6	11
Total assets		709	1,136
Short-term borrowings		539	905
Derivative liabilities		0	0
Accrued expenses and other liabilities		1	2
Long-term debt		122	136
Total liabilities		662	1,043
Noncontrolling interests		0	0
Net assets		47	93
Total VIE [Member]
Variable Interest Entity Consolidated Carrying Amount Assets and Liabilities
Cash		112	168
Federal funds sold, securities purchased under resale agreements and other short-term investments		424	74
Trading assets		1,682	2,365
Investment securities		5,526	9,316
Loans		17,673	19,425
Mortgage servicing rights		13,337	13,386
Derivative assets		77	92
Other assets		10,666	10,744
Total assets		49,497	55,570
Short-term borrowings		539	905
Derivative liabilities		120	92
Accrued expenses and other liabilities		332	415
Long-term debt		6,239	7,428
Total liabilities		7,230	8,840
Noncontrolling interests		86	138
Net assets		$ 42,181	$ 46,592

[1] Parenthetical amounts represent assets and liabilities for which we have elected the fair value option.

[2] Our consolidated assets at June 30, 2017, and December 31, 2016, 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, $112 million and $168 million; Federal funds sold, securities purchased under resale agreements and other short-term investments, $424 million and $74 million; Trading assets, $50 million and $130 million; Investment securities, $0 million at both period ends; Net loans, $12.1 billion and $12.6 billion; Derivative assets, $0 million and $1 million; Other assets, $339 million and $452 million; and Total assets, $13.0 billion and $13.4 billion, respectively.

[3] Our consolidated liabilities at June 30, 2017, and December 31, 2016, include the following VIE liabilities for which the VIE creditors do not have recourse to Wells Fargo: Derivative liabilities, $28 million and $33 million; Accrued expenses and other liabilities, $96 million and $107 million; Long-term debt, $2.8 billion and $3.7 billion; and Total liabilities, $3.0 billion and $3.8 billion, respectively.