Derivative Financial Instruments - Location of Company's Derivative Instruments Recorded at Fair Value on Condensed Consolidated Balance Sheets (Parenthetical) (Detail) - USD ($) $ in Millions	Sep. 25, 2015	Dec. 31, 2014
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities held for sale	$ 13	$ 10
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative assets held for sale	$ 1	4
Designated as Hedging Instruments [Member] | Other Current Liabilities [Member] | Assets Held for Sale [Member]
Derivatives, Fair Value [Line Items]
Derivative liabilities held for sale		2
Designated as Hedging Instruments [Member] | Other Current Assets [Member] | Assets Held for Sale [Member]
Derivatives, Fair Value [Line Items]
Derivative assets held for sale		$ 2