Segment Information - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Segment Reporting [Abstract]
Number of segments	2
US
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 164	$ 159
Foreign Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 611	$ 611
Sales [Member] | Foreign Countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Maximum percentage of total consolidated net sales attributed to any non-U.S. country	7.10%