Equity Method Investment Summarized Financial Information, Income Statement (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 28, 2012
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract]
Sales	$ 752	$ 727	$ 902
Net income (loss)	$ 38	$ 11	$ (4)

The amount of net income (loss) reported by an equity method investment of the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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