v2.4.0.8
Other Comprehensive Income, Components of Other Comprehensive Income (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Foreign currency translation adjustments:        
Net unrealized losses arising during the period, Before tax $ (21) $ (56) $ (39) $ (46)
Net unrealized losses arising during the period, Tax effect (8) 21 (6) 17
Net unrealized losses arising during the period, Net of tax (29) (35) (45) (29)
Reclassification of net gains to net income, Before tax (15) (10) (15) (10)
Reclassification of net gains to net income, Net of tax (10) (6) (10) (6)
Net change, Before tax (36) (66) (54) (56)
Net change, Tax effect (3) 25 (1) 21
Net change, Net of tax (39) (41) (55) (35)
Securities available for sale:        
Net unrealized gains (losses) arising during the period, Before tax (6,130) 831 (6,764) 2,705
Net unrealized gains (losses) arising during the period, Tax effect 2,300 (316) (2,530) (1,020)
Net unrealized gains (losses) arising during the period, Net of tax (3,830) 515 (4,234) 1,685
Reclassification of net (gains) losses to net income, Before tax 30 (23) (83) (249)
Reclassification of net (gains) losses to net income, Tax effect (11) 14 32 94
Reclassification of net (gains) losses to net income, Net of tax 19 (9) (51) (155)
Net change, Before tax (6,100) 808 (6,847) 2,456
Net change, Tax effect 2,289 (302) 2,562 (926)
Net change, Net of tax (3,811) 506 (4,285) 1,530
Derivatives and hedging activities:        
Net unrealized gains arising during the period, Before tax (10) (3) (3) 39
Net unrealized gains arising during the period, Tax effect 3 (4) 1 (16)
Net unrealized gains arising during the period, Net of tax (7) (7) (2) 23
Reclassification of net gains on cash flow hedges to net income, Before tax (69) (99) (156) (206)
Reclassification of net (gains) losses on cash flow hedges to net income, Tax effect 23 37 59 77
Reclassification of net (gains) losses on cash flow hedges to net income, Net of tax (46) (62) (97) (129)
Net change, Before tax (79) (102) (159) (167)
Net change, Tax effect 26 33 60 61
Net change, Net of tax (53) (69) (99) (106)
Defined benefit plans adjustments:        
Net actuarial gains (losses) arising during the period, Before tax 772 (12) 778 (17)
Net actuarial gains (losses) arising during the period, Tax effect (291) 5 (293) 7
Net actuarial gains (losses) arising during the period, Net of tax 481 (7) 485 (10)
Amortization of net actuarial loss, before tax 45 35 91 71
Amortization of net actuarial loss, tax effect (16) (14) (34) (27)
Amortization of net actuarial loss, net of tax 29 21 57 44
Settlements and other costs, before tax 68 5 71 5
Settlements and other costs, tax effect (26) (2) (27) (2)
Settlements and other costs, after tax 42 3 44 3
Reclassification to net periodic benefit costs, before tax 113 40 162 76
Reclassification to net periodic benefit costs, tax effect (42) (16) (61) (29)
Reclassification to net periodic benefit costs, net of tax 71 24 101 47
Net change, Before tax 885 28 940 59
Net change, Tax effect (333) (11) (354) (22)
Net change, Net of tax 552 17 586 37
Other comprehensive income (loss), Before tax (5,330) 668 (6,120) 2,292
Income tax (expense) benefit related to other comprehensive income 1,979 (255) 2,267 (866)
Other comprehensive income (loss), net of tax (3,351) 413 (3,853) 1,426
Less: Other comprehensive income (loss) from noncontrolling interests, net of tax (3) 0 0 4
Wells Fargo other comprehensive income (loss), net of tax (3,348) 413 (3,853) 1,422
Interest income on loans [Member]
        
Derivatives and hedging activities:        
Reclassification of net gains on cash flow hedges to net income, Before tax (115) (123) (231) (252)
Reclassification of net (gains) losses on cash flow hedges to net income, Tax effect 40 47 87 95
Reclassification of net (gains) losses on cash flow hedges to net income, Net of tax (75) (76) (144) (157)
Interest expense on long-term debt [Member]
        
Derivatives and hedging activities:        
Reclassification of net gains on cash flow hedges to net income, Before tax 27 24 54 46
Reclassification of net (gains) losses on cash flow hedges to net income, Tax effect (10) (10) (20) (18)
Reclassification of net (gains) losses on cash flow hedges to net income, Net of tax 17 14 34 28
Salaries expense [Member]
        
Derivatives and hedging activities:        
Reclassification of net gains on cash flow hedges to net income, Before tax 2 0 4 0
Reclassification of net (gains) losses on cash flow hedges to net income, Tax effect (1) 0 (2) 0
Reclassification of net (gains) losses on cash flow hedges to net income, Net of tax 1 0 2 0
Noninterest income [Member]
        
Foreign currency translation adjustments:        
Reclassification of net gains to net income, Before tax (15) (10) (15) (10)
Reclassification of net gains to net income, Tax effect 5 4 5 4
Reclassification of net gains to net income, Net of tax (10) (6) (10) (6)
Derivatives and hedging activities:        
Reclassification of net gains on cash flow hedges to net income, Before tax 17 0 17 0
Reclassification of net (gains) losses on cash flow hedges to net income, Tax effect (6) 0 (6) 0
Reclassification of net (gains) losses on cash flow hedges to net income, Net of tax 11 0 11 0
Debt securities available for sale [Member]
        
Securities available for sale:        
Reclassification of net (gains) losses to net income, Before tax 54 61 9 68
Reclassification of net (gains) losses to net income, Tax effect (20) (24) (3) (26)
Reclassification of net (gains) losses to net income, Net of tax 34 37 6 42
Equity investments [Member]
        
Securities available for sale:        
Reclassification of net (gains) losses to net income, Before tax (24) (84) (92) (317)
Reclassification of net (gains) losses to net income, Tax effect 9 38 35 120
Reclassification of net (gains) losses to net income, Net of tax $ (15) $ (46) $ (57) $ (197)