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Property, Plant and Equipment - Property, Plant and Equipment (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Property, Plant and Equipment [Line Items]    
Property, plant and equipment Gross $ 5,212 $ 4,523
Less: Accumulated Depreciation (1,804) (1,578)
Property, plant and equipment, net 3,408 2,945
Land and building [Member]
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment Gross 1,494 1,348
Estimated Useful Lives 5-35 Years  
Operating equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment Gross 2,960 2,463
Estimated Useful Lives 3-15 Years  
Rental equipment [Member]
    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment Gross $ 758 $ 712
Estimated Useful Lives 3-12 Years