v2.4.0.6
Other Comprehensive Income (Tables)
12 Months Ended
Dec. 31, 2012
Other Comprehensive Income Tables [Abstract]  
Components of other comprehensive income and related tax effects
                   
       Year ended December 31,
        2012  2011  2010
       BeforeTax Net of BeforeTaxNet of BeforeTaxNet of
(in millions) taxeffect tax taxeffecttax taxeffecttax
Foreign currency translation adjustments:             
 Net unrealized gains (losses)              
  arising during the period$ (6) 2  (4)  (37) 13 (24)  83 (26) 57
 Reclassification of net gains              
  to net income   (10) 4  (6)  - - -  - - -
Net unrealized gains (losses)              
 arising during the period  (16) 6  (10)  (37) 13 (24)  83 (26) 57
Securities available for sale:             
 Net unrealized gains (losses)             
  arising during the period  5,143 (1,921)  3,222  (588) 359 (229)  2,624 (1,134) 1,490
 Reclassification of net (gains) losses             
  to net income   (271) 102  (169)  (696) 262 (434)  77 (29) 48
Net unrealized gains (losses)             
 arising during the period  4,872 (1,819)  3,053  (1,284) 621 (663)  2,701 (1,163) 1,538
Derivatives and hedging activities:             
 Net unrealized gains arising              
  during the period  52 (12)  40  190 (85) 105  750 (282) 468
 Reclassification of net gains on cash flow             
  hedges to net income  (388) 147  (241)  (571) 217 (354)  (613) 234 (379)
Net unrealized gains (losses)             
 arising during the period  (336) 135  (201)  (381) 132 (249)  137 (48) 89
Defined benefit plans adjustments:             
 Net actuarial gains (losses) arising              
  during the period  (775) 290  (485)  (1,079) 411 (668)  20 (9) 11
 Amortization of net actuarial loss and prior             
  service cost to net income  144 (54)  90  99 (38) 61  104 (45) 59
Net unrealized gains (losses)              
 arising during the period  (631) 236  (395)  (980) 373 (607)  124 (54) 70
Other comprehensive income (loss)$ 3,889 (1,442)  2,447  (2,682) 1,139 (1,543)  3,045 (1,291) 1,754
Less: Other comprehensive income (loss) from              
 noncontrolling interests, net of tax     4    (12)    25
  Wells Fargo other comprehensive             
   income (loss), net of tax   $ 2,443    (1,531)    1,729
Cumulative other comprehensive income
             
            Cumulative
    Foreign   Derivatives Defined other
    currency Securities and benefit compre-
    translation available hedging plans hensive
(in millions) adjustments for sale activities adjustments income
Balance, December 31, 2009$ 67  3,541  650  (1,249)  3,009
 Net change  57  1,538  89  70  1,754
 Less: Other comprehensive income (loss)          
  from noncontrolling interests  12  13  -  -  25
Balance, December 31, 2010  112  5,066  739  (1,179)  4,738
 Net change  (24)  (663)  (249)  (607)  (1,543)
 Less: Other comprehensive income (loss)          
  from noncontrolling interests  (2)  (10)  -  -  (12)
Balance, December 31, 2011  90  4,413  490  (1,786)  3,207
 Net change  (10)  3,053  (201)  (395)  2,447
 Less: Other comprehensive income (loss)          
  from noncontrolling interests  -  4  -  -  4
Balance, December 31, 2012$ 80  7,462  289  (2,181)  5,650