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Property, Plant and Equipment, net - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 240 $ 230
Less: accumulated depreciation (87) (65)
Property, plant and equipment, net 153 165
Information Technology Assets [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 49 48
Information Technology Assets [Member] | Minimum [Member]    
Property Plant And Equipment [Line Items]    
Property plant and equipment estimated useful lives 1 year  
Information Technology Assets [Member] | Maximum [Member]    
Property Plant And Equipment [Line Items]    
Property plant and equipment estimated useful lives 7 years  
Operating Equipment [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 93 84
Operating Equipment [Member] | Minimum [Member]    
Property Plant And Equipment [Line Items]    
Property plant and equipment estimated useful lives 2 years  
Operating Equipment [Member] | Maximum [Member]    
Property Plant And Equipment [Line Items]    
Property plant and equipment estimated useful lives 15 years  
Buildings [Member] | Minimum [Member]    
Property Plant And Equipment [Line Items]    
Property plant and equipment estimated useful lives 5 years  
Buildings [Member] | Maximum [Member]    
Property Plant And Equipment [Line Items]    
Property plant and equipment estimated useful lives 35 years  
Buildings and Land [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 97 $ 98
Construction in progress [Member]    
Property Plant And Equipment [Line Items]    
Property, plant and equipment, gross $ 1