Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION - Restricted Stock Units Outstanding, Including Reinvested Dividends (Detail)

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STOCK-BASED COMPENSATION - Restricted Stock Units Outstanding, Including Reinvested Dividends (Detail) (Long Term Incentive Performance Award, Restricted Units, USD $)
In Millions, except Share data in Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Long Term Incentive Performance Award | Restricted Units
     
Shares      
Beginning Balance 15,839    
Vested (8,914)    
Granted 7,423    
Reinvested Dividends 568    
Forfeited / Expired (272)    
Ending Balance 14,644 15,839  
Restricted Units Expected to Vest 14,172    
Weighted Average Grant Date Fair Value      
Beginning Balance $ 62.98    
Vested $ 63.99    
Granted $ 77.21 $ 69.53 $ 66.36
Forfeited / Expired $ 67.51    
Ending Balance $ 68.71 $ 62.98  
Restricted Units Expected to Vest $ 68.61    
Weighted Average Remaining Contractual Term (in years)      
Nonvested at December 31, 2012 1 year 6 months 27 days    
Restricted Units Expected to Vest 1 year 6 months 19 days    
Aggregate Intrinsic Value      
Nonvested at December 31, 2012 $ 1,080    
Restricted Units Expected to Vest $ 1,045