Consolidated Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Statement of Comprehensive Income [Abstract]
Wells Fargo net income	$ 6,206	$ 5,186	$ 12,066	$ 10,322
Debt securities:
Net unrealized gains (losses) arising during the period	1,709	(617)	4,540	(4,060)
Reclassification of net (gains) losses to net income	39	49	(42)	117
Derivative and hedging activities:
Net unrealized gains (losses) arising during the period	57	(150)	22	(392)
Reclassification of net losses to net income	79	77	158	137
Defined benefit plans adjustments:
Net actuarial and prior service gains (losses) arising during the period	0	0	(4)	6
Amortization of net actuarial loss, settlements and other to net income	33	29	68	61
Foreign currency translation adjustments:
Net unrealized gains (losses) arising during the period	14	(83)	56	(85)
Other comprehensive income (loss), before tax	1,931	(695)	4,798	(4,216)
Income tax benefit (expense) related to other comprehensive income	(473)	154	(1,167)	1,016
Other comprehensive income (loss), net of tax	1,458	(541)	3,631	(3,200)
Less: Other comprehensive loss from noncontrolling interests	0	(1)	0	(1)
Wells Fargo other comprehensive income (loss), net of tax	1,458	(540)	3,631	(3,199)
Wells Fargo comprehensive income	7,664	4,646	15,697	7,123
Comprehensive income from noncontrolling interests	132	122	239	313
Total comprehensive income	$ 7,796	$ 4,768	$ 15,936	$ 7,436