v2.4.0.8
Restructuring - Charges and Spending Relating to Restructuring Activities by Program (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Restructuring Reserve [Roll Forward]      
Expenses $ 2,401 $ 999 $ 1,891
2013 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0    
Expenses 1,241    
(Payments) receipts, net (112)    
Non-cash activity (361)    
Restructuring reserve, ending balance 768 [1]    
Merger Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 718 1,195  
Expenses 1,106 951 1,846
(Payments) receipts, net (775) (1,112)  
Non-cash activity (312) (316)  
Restructuring reserve, ending balance 737 [1] 718 1,195
2008 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 77 126  
Expenses 54 48 45
(Payments) receipts, net (60) (62)  
Non-cash activity (71) (35)  
Restructuring reserve, ending balance 0 77 126
Separation Costs [Member]
      
Restructuring Reserve [Roll Forward]      
Expenses 1,381 489 1,111
Separation Costs [Member] | 2013 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0    
Expenses 866    
(Payments) receipts, net (121)    
Non-cash activity 0    
Restructuring reserve, ending balance 745 [1]    
Separation Costs [Member] | Merger Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 699 1,144  
Expenses 481 497 1,117
(Payments) receipts, net (517) (942)  
Non-cash activity 62 0  
Restructuring reserve, ending balance 725 [1] 699 1,144
Separation Costs [Member] | 2008 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 77 126  
Expenses 34 (8) (6)
(Payments) receipts, net (49) (41)  
Non-cash activity (62) 0  
Restructuring reserve, ending balance 0 77 126
Accelerated Depreciation [Member]
      
Restructuring Reserve [Roll Forward]      
Expenses 577 235 569
Accelerated Depreciation [Member] | 2013 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0    
Expenses 334    
(Payments) receipts, net 0    
Non-cash activity (334)    
Restructuring reserve, ending balance 0 [1]    
Accelerated Depreciation [Member] | Merger Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0 0  
Expenses 241 220 541
(Payments) receipts, net 0 0  
Non-cash activity (241) (220)  
Restructuring reserve, ending balance 0 [1] 0 0
Accelerated Depreciation [Member] | 2008 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0 0  
Expenses 2 15 28
(Payments) receipts, net 0 0  
Non-cash activity (2) (15)  
Restructuring reserve, ending balance 0 0 0
Other [Member]
      
Restructuring Reserve [Roll Forward]      
Expenses 443 275 211
Other [Member] | 2013 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0    
Expenses 41    
(Payments) receipts, net 9    
Non-cash activity (27)    
Restructuring reserve, ending balance 23 [1]    
Other [Member] | Merger Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 19 51  
Expenses 384 234 188
(Payments) receipts, net (258) (170)  
Non-cash activity (133) (96)  
Restructuring reserve, ending balance 12 [1] 19 51
Other [Member] | 2008 Restructuring Program [Member]
      
Restructuring Reserve [Roll Forward]      
Restructuring reserve, beginning balance 0 0  
Expenses 18 41 23
(Payments) receipts, net (11) (21)  
Non-cash activity (7) (20)  
Restructuring reserve, ending balance $ 0 $ 0 $ 0
[1] The cash outlays associated with the 2013 Restructuring Program are expected to be substantially completed by the end of 2015. The cash outlays associated with the Merger Restructuring Program were substantially completed by the end of 2013 with the exception of certain actions, principally manufacturing-related, which are expected to be substantially completed by 2016.