v3.26.1
Other Comprehensive Income, AOCI Balances (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Accumulative OCI balances [Abstract]        
Balance, beginning of period     $ 183,038  
Other comprehensive income (loss), net of tax $ (355) $ 631 (1,604) $ 2,810
Balance, end of period 182,323 182,954 182,323 182,954
Other Comprehensive Income Textual [Abstract]        
Unrealized gain (loss) in AOCI, on available-for-sale debt securities transferred to held-to-maturity debt securities, after tax (2,600) (2,900) (2,600) (2,900)
AOCI including portion attributable to noncontrolling interest [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period (508) 391 (1,918) 2,465
Amounts reclassified from AOCI 153 240 314 345
Other comprehensive income (loss), net of tax (355) 631 (1,604) 2,810
Debt securities [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period 160 84 (804) 1,784
Amounts reclassified from AOCI 86 97 167 75
Other comprehensive income (loss), net of tax 246 181 (637) 1,859
Fair value hedges [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period 0 4 9 9
Amounts reclassified from AOCI 0 0 0 0
Other comprehensive income (loss), net of tax 0 4 9 9
Cash flow hedges [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period (559) 210 (979) 544
Amounts reclassified from AOCI 51 124 112 231
Other comprehensive income (loss), net of tax (508) 334 (867) 775
Defined benefit plans adjustments [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period 0 0 0 0
Amounts reclassified from AOCI 16 19 35 39
Other comprehensive income (loss), net of tax 16 19 35 39
Debit valuation adjustments (DVA) [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period (63) (24) (12) (16)
Amounts reclassified from AOCI 0 0 0 0
Other comprehensive income (loss), net of tax (63) (24) (12) (16)
Foreign currency translation adjustments [Member]        
Accumulative OCI balances [Abstract]        
Net unrealized gains (losses) arising during the period (46) 117 (132) 144
Amounts reclassified from AOCI 0 0 0 0
Other comprehensive income (loss), net of tax (46) 117 (132) 144
Total Wells Fargo stockholders' equity [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax (355) 632 (1,604) 2,810
Accumulative other comprehensive income, parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (7,922) (9,998) (6,673) (12,176)
Other comprehensive income (loss), net of tax (355) 632 (1,604) 2,810
Balance, end of period (8,277) (9,366) (8,277) (9,366)
Debt securities, parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (5,271) (7,178) (4,388) (8,856)
Balance, end of period (5,025) (6,997) (5,025) (6,997)
Fair value hedges, parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (21) (41) (30) (46)
Balance, end of period (21) (37) (21) (37)
Cash flow hedges, parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (509) (630) (150) (1,071)
Balance, end of period (1,017) (296) (1,017) (296)
Defined benefit plans adjustments, parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (1,577) (1,653) (1,596) (1,673)
Balance, end of period (1,561) (1,634) (1,561) (1,634)
Debit valuation adjustment (DVA), parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (57) (38) (108) (46)
Balance, end of period (120) (62) (120) (62)
Foreign currency translation adjustments, parent [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period (487) (458) (401) (484)
Balance, end of period (533) (340) (533) (340)
Noncontrolling interests [Member]        
Accumulative OCI balances [Abstract]        
Balance, beginning of period 1,917 1,816 1,921 1,946
Other comprehensive income (loss), net of tax 0 (1) 0 0
Balance, end of period 2,133 1,843 2,133 1,843
Cumulative other comprehensive income, noncontrolling Interests [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax 0 (1) 0 0
Debt securities, noncontrolling interest [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax 0 0 0 0
Fair value hedges, noncontrolling interest [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax 0 0 0 0
Cash flow hedges, noncontrolling interest [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax 0 0 0 0
Defined benefit plans adjustments, noncontrolling interest [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax 0 0 0 0
Debit valuation adjustment (DVA) [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax 0 0 0 0
Foreign currency translation adjustments, noncontrolling interest [Member]        
Accumulative OCI balances [Abstract]        
Other comprehensive income (loss), net of tax $ 0 $ (1) $ 0 $ 0