Operating Segments (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reportable operating segments | segment			3
Financial Information of Operating Segment [Abstract]
Net interest income	$ 11,270	$ 10,791	$ 22,256	$ 21,406
Provision (reversal of provision) for credit losses	300	217	908	542
Noninterest income	10,048	10,275	20,340	20,285
Noninterest expense	12,469	12,194	24,976	24,142
Income before income tax expense	8,549	8,655	16,712	17,007
Income tax expense (benefit)	2,763	2,869	5,042	5,146
Net income before noncontrolling interests	5,786	5,786	11,670	11,861
Less: Net income from noncontrolling interests	67	60	147	242
Wells Fargo net income	5,719	5,726	11,523	11,619
Average loans	870,400	831,000	866,900	827,400
Average assets	1,729,300	1,564,000	1,718,600	1,545,100
Average core deposits	1,079,200	991,700	1,071,200	982,800
Other [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	(361)	(323)	(718)	(642)
Provision (reversal of provision) for credit losses	5	12	5	19
Noninterest income	(804)	(713)	(1,598)	(1,410)
Noninterest expense	(765)	(724)	(1,562)	(1,476)
Income before income tax expense	(405)	(324)	(759)	(595)
Income tax expense (benefit)	(153)	(123)	(288)	(226)
Net income before noncontrolling interests	(252)	(201)	(471)	(369)
Less: Net income from noncontrolling interests	0	0	0	0
Wells Fargo net income	(252)	(201)	(471)	(369)
Average loans	(39,000)	(33,500)	(38,300)	(33,300)
Average assets	(75,300)	(74,100)	(75,600)	(74,400)
Average core deposits	(70,100)	(66,900)	(70,300)	(67,300)
Community Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	7,698	7,386	15,259	14,661
Provision (reversal of provision) for credit losses	363	279	980	698
Noninterest income	4,963	5,220	10,186	10,538
Noninterest expense	7,164	7,020	14,228	13,794
Income before income tax expense	5,134	5,307	10,237	10,707
Income tax expense (benefit)	1,707	1,820	3,071	3,196
Net income before noncontrolling interests	3,427	3,487	7,166	7,511
Less: Net income from noncontrolling interests	69	56	143	236
Wells Fargo net income	3,358	3,431	7,023	7,275
Average loans	506,500	505,400	506,500	505,200
Average assets	993,300	918,100	993,200	905,500
Average core deposits	685,700	639,800	677,300	633,200
Wholesale Banking [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	3,068	2,953	5,989	5,844
Provision (reversal of provision) for credit losses	(58)	(49)	(64)	(142)
Noninterest income	3,015	2,993	6,006	5,682
Noninterest expense	3,295	3,203	6,704	6,418
Income before income tax expense	2,846	2,792	5,355	5,250
Income tax expense (benefit)	840	838	1,546	1,552
Net income before noncontrolling interests	2,006	1,954	3,809	3,698
Less: Net income from noncontrolling interests	(5)	2	1	4
Wells Fargo net income	2,011	1,952	3,808	3,694
Average loans	343,600	308,100	340,600	305,000
Average assets	618,000	532,400	606,500	524,900
Average core deposits	304,200	265,800	303,800	262,400
Wealth, Brokerage And Retirement [Member]
Financial Information of Operating Segment [Abstract]
Net interest income	865	775	1,726	1,543
Provision (reversal of provision) for credit losses	(10)	(25)	(13)	(33)
Noninterest income	2,874	2,775	5,746	5,475
Noninterest expense	2,775	2,695	5,606	5,406
Income before income tax expense	974	880	1,879	1,645
Income tax expense (benefit)	369	334	713	624
Net income before noncontrolling interests	605	546	1,166	1,021
Less: Net income from noncontrolling interests	3	2	3	2
Wells Fargo net income	602	544	1,163	1,019
Average loans	59,300	51,000	58,100	50,500
Average assets	193,300	187,600	194,500	189,100
Average core deposits	$ 159,400	$ 153,000	$ 160,400	$ 154,500