Regulatory and Agency Capital Requirements (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Wells Fargo & Company [Member]
Regulatory leverage:
Total leverage exposure	$ 2,289,114	$ 2,316,079
Supplementary leverage ratio (SLR)	0.0661	0.0689
Tier 1 leverage ratio	0.0800	0.0834
Required minimum leverage
Supplementary leverage ratio	0.0500	0.0500
Tier 1 leverage ratio	0.0400	0.0400
Wells Fargo & Company [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common Equity Tier 1	$ 132,298	$ 140,643
Tier 1	151,340	159,671
Total	186,316	196,308
Assets:
Risk-weighted assets	1,265,517	1,239,026
Adjusted average assets	$ 1,891,615	$ 1,915,585
Regulatory capital ratios:
Common Equity Tier 1 capital	0.1045	0.1135
Tier 1 capital	0.1196	0.1289
Total capital	0.1472	0.1584
Required minimum capital ratios:
Common Equity Tier 1 Capital	0.0910	0.0960
Tier 1 capital	0.1060	0.1110
Total capital	0.1260	0.1310
Wells Fargo & Company [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common Equity Tier 1	$ 132,298	$ 140,643
Tier 1	151,340	159,671
Total	177,686	186,580
Assets:
Risk-weighted assets	1,119,518	1,116,068
Adjusted average assets	$ 1,891,615	$ 1,915,585
Regulatory capital ratios:
Common Equity Tier 1 capital	0.1182	0.1260
Tier 1 capital	0.1352	0.1431
Total capital	0.1587	0.1672
Required minimum capital ratios:
Common Equity Tier 1 Capital	0.0850	0.0900
Tier 1 capital	0.1000	0.1050
Total capital	0.1200	0.1250
Wells Fargo Bank, NA [Member]
Regulatory leverage:
Total leverage exposure	$ 2,117,033	$ 2,133,798
Supplementary leverage ratio (SLR)	0.0679	0.0700
Tier 1 leverage ratio	0.0829	0.0849
Required minimum leverage
Supplementary leverage ratio	0.0600	0.0600
Tier 1 leverage ratio	0.0400	0.0400
Wells Fargo Bank, NA [Member] | Standardized Approach Under Basel III [Member]
Regulatory capital:
Common Equity Tier 1	$ 143,732	$ 149,318
Tier 1	143,732	149,318
Total	166,302	173,044
Assets:
Risk-weighted assets	1,169,842	1,137,839
Adjusted average assets	$ 1,734,148	$ 1,758,479
Regulatory capital ratios:
Common Equity Tier 1 capital	0.1229	0.1312
Tier 1 capital	0.1229	0.1312
Total capital	0.1422	0.1521
Required minimum capital ratios:
Common Equity Tier 1 Capital	0.0700	0.0700
Tier 1 capital	0.0850	0.0850
Total capital	0.1050	0.1050
Wells Fargo Bank, NA [Member] | Advanced Approach Under Basel III [Member]
Regulatory capital:
Common Equity Tier 1	$ 143,732	$ 149,318
Tier 1	143,732	149,318
Total	157,604	163,213
Assets:
Risk-weighted assets	977,094	965,511
Adjusted average assets	$ 1,734,148	$ 1,758,479
Regulatory capital ratios:
Common Equity Tier 1 capital	0.1471	0.1547
Tier 1 capital	0.1471	0.1547
Total capital	0.1613	0.1690
Required minimum capital ratios:
Common Equity Tier 1 Capital	0.0700	0.0700
Tier 1 capital	0.0850	0.0850
Total capital	0.1050	0.1050