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STOCK-BASED COMPENSATION PLANS (Tables)
12 Months Ended
Dec. 31, 2011
Stock Based Compensation Plans [Abstract]  
Share based compensation fair value assumptions
   Years Ended December 31, 
   2011  2010  2009 
 Weighted average fair value per share of options         
  granted during the year(1)$ 12.56 $ 8.96 $ 6.73 
 Assumptions:         
  Expected annual dividend yield   2.68%  3.00%  4.26%
  Expected volatility   27.60%  29.39%  35.78%
  Risk-free rate of return   2.47%  2.64%  2.53%
  Expected option term (years)   5.8   5.4   5.8 
           
 (1) Estimated on date of grant using Black-Scholes option-pricing model.     
Stock Options Activity
      Weighted 
      Average 
   Number of  Exercise 
   Options  Price 
 Outstanding at December 31, 2008 40,933,522  $ 43.97 
  Granted 9,159,650    28.40 
  Exercised (645,201)    31.66 
  Lapsed or canceled (8,537,598)    53.90 
 Outstanding at December 31, 2009 40,910,373    38.58 
  Granted 7,607,950    40.29 
  Exercised (5,211,526)    34.77 
  Lapsed or canceled (2,515,266)    44.14 
 Outstanding at December 31, 2010 40,791,531    39.05 
  Granted 7,625,950    57.08 
  Exercised (7,984,840)    36.39 
  Lapsed or canceled (1,516,271)    42.38 
 Outstanding at December 31, 2011 38,916,370  $ 43.01 
 Vested and expected to vest at December 31, 2011(1) 35,845,642  $ 42.49 
 Exercisable at December 31, 2011 21,672,281  $ 40.71 
         
 (1) Represents the sum of vested options of 21.7 million and expected to vest options of 14.1 million. Expected to vest options are derived by applying the pre-vesting forfeiture rate assumption to total outstanding unvested options 17.2 million. 
Schedule of share based compensation by price ranges
  Options Outstanding Options Exercisable
    Weighted    Weighted  
   WeightedAverageAggregate   AverageAggregate
Range of  NumberAverageExerciseIntrinsic Number ExerciseIntrinsic
Exercise prices OutstandingLife(1)PriceValue Exercisable PriceValue
$21.75–$32.99  8,037,7125.90 $27.53$216  4,346,486 $26.79$120
$33.00–$39.99  5,219,1202.75  36.22 95  5,219,120  36.22 95
$40.00–$49.99  14,259,9886.31  42.61 167  8,978,375  43.96 93
$50.00–$74.95  11,399,5508.10  57.52   3,128,300  58.23 
  38,916,3706.27  43.01$478  21,672,281  40.71$308
                 
(1) Average remaining contractual life in years.             
Restricted stock units activity
     Weighted 
     Average 
   Number of Grant Date 
   Restricted Fair Value 
   Stock Units Per Share 
 Non-vested at December 31, 2008 6,825,717 $46.63 
  Granted 3,691,129  30.16 
  Vested (1,313,975)  40.44 
  Forfeited (940,094)  44.51 
 Non-vested at December 31, 2009 8,262,777  40.49 
  Granted 3,842,367  42.33 
  Vested (1,593,979)  48.71 
  Forfeited (537,212)  40.45 
 Non-vested at December 31, 2010 9,973,953  39.89 
  Granted 1,887,733  55.11 
  Vested (1,509,528)  49.48 
  Forfeited (605,725)  40.11 
 Non-vested at December 31, 2011 9,746,433 $41.35