Identified Intangible Assets, Indefinite-Lived Intangible Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 27, 2014	Dec. 26, 2015
Indefinite-lived Intangible Assets [Line Items]
Intangible Assets Gross	$ 991	$ 941
Acquisition-related Brands [Member]
Indefinite-lived Intangible Assets [Line Items]
Gross assets, Indefinite-Lived Intangible Assets	788	767
Other Intangible Assets [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired	197
Gross assets, Indefinite-Lived Intangible Assets	$ 203	$ 174