Property, Plant and Equipment, net - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 230	$ 175
Less: accumulated depreciation	(65)	(51)
Property, plant and equipment, net	165	124	$ 102
Information Technology Assets [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 48	49
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	$ 84	51
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 and Land [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 98	73
Buildings and Land [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	5 years
Buildings and Land [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Property plant and equipment estimated useful lives	35 years
Construction in progress [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross		$ 2