v3.26.1
Other Comprehensive Income, Accumulated OCI Balances (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Accumulative OCI balances [Abstract]    
Balance, beginning of period $ 183,038  
Other comprehensive income (loss), net of tax (1,249) $ 2,179
Balance, end of period 180,313 182,906
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) (3,000)
AOCI including portion attributable to noncontrolling interest [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period (1,410) 2,074
Amounts reclassified from accumulated other comprehensive income (loss) 161 105
Other comprehensive income (loss), net of tax (1,249) 2,179
Debt securities [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period (964) 1,700
Amounts reclassified from accumulated other comprehensive income (loss) 81 (22)
Other comprehensive income (loss), net of tax (883) 1,678
Fair value hedges [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period 9 5
Amounts reclassified from accumulated other comprehensive income (loss) 0 0
Other comprehensive income (loss), net of tax 9 5
Cash flow hedges [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period (420) 334
Amounts reclassified from accumulated other comprehensive income (loss) 61 107
Other comprehensive income (loss), net of tax (359) 441
Defined benefit plans adjustments [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period 0 0
Amounts reclassified from accumulated other comprehensive income (loss) 19 20
Other comprehensive income (loss), net of tax 19 20
Debit valuation adjustments (DVA) [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period 51 8
Amounts reclassified from accumulated other comprehensive income (loss) 0 0
Other comprehensive income (loss), net of tax 51 8
Foreign currency translation adjustments [Member]    
Accumulative OCI balances [Abstract]    
Net unrealized gains (losses) arising during the period (86) 27
Amounts reclassified from accumulated other comprehensive income (loss) 0 0
Other comprehensive income (loss), net of tax (86) 27
Total Wells Fargo stockholders' equity [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax (1,249) 2,178
Accumulative other comprehensive income, parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (6,673) (12,176)
Other comprehensive income (loss), net of tax (1,249) 2,178
Balance, end of period (7,922) (9,998)
Debt securities, parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (4,388) (8,856)
Balance, end of period (5,271) (7,178)
Fair value hedges, parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (30) (46)
Balance, end of period (21) (41)
Cash flow hedges, parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (150) (1,071)
Balance, end of period (509) (630)
Defined benefit plans adjustments, parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (1,596) (1,673)
Balance, end of period (1,577) (1,653)
Debit valuation adjustment (DVA), parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (108) (46)
Balance, end of period (57) (38)
Foreign currency translation adjustments, parent [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period (401) (484)
Balance, end of period (487) (458)
Noncontrolling interests [Member]    
Accumulative OCI balances [Abstract]    
Balance, beginning of period 1,921 1,946
Other comprehensive income (loss), net of tax 0 1
Balance, end of period 1,917 1,816
Cumulative other comprehensive income, noncontrolling Interests [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax 0 1
Debt securities, noncontrolling interest [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax 0 0
Fair value hedges, noncontrolling interest [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax 0 0
Cash flow hedges, noncontrolling interest [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax 0 0
Defined benefit plans adjustments, noncontrolling interest [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax 0 0
Debit valuation adjustment (DVA) [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax 0 0
Foreign currency translation adjustments, noncontrolling interest [Member]    
Accumulative OCI balances [Abstract]    
Other comprehensive income (loss), net of tax $ 0 $ 1