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Acquisitions and Investments - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]      
Aggregate purchase price of acquisitions $ 2,397 $ 2,880 $ 1,038
Intangible assets     273
Weighted average life 5 years    
Other Investments [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Aggregate purchase price of acquisitions 19    
All Other Acquisitions [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Share holder received in cash per share $ 60.00    
Aggregate purchase price of acquisitions 2,378 2,880 1,038
Intangible assets 894 981 273
Weighted average life 19 years 18 years 16 years
Acquisitions completed   17 9
Customer relationships [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets 635 473 119
Weighted average life 18 years 20 years 14 years
Trademarks [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets 86 159 39
Weighted average life 20 years 16 years 35 years
Other Intangible Assets [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets 3 348 115
Weighted average life 1 year 17 years 12 years
Patents [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets 170    
Weighted average life 20 years    
Goodwill [Member]
      
Acquired Finite-Lived Intangible Assets [Line Items]      
Intangible assets   $ 1,000