Inventories - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
Oct. 01, 2016	Sep. 26, 2015	Jan. 02, 2016	Dec. 27, 2014
Inventory Disclosure [Abstract]
LIFO balance sheet reserves	$ 109		$ 134	$ 208
Effect of LIFO reserves on cost of goods sold	$ (25)	$ (42)

Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(c))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_InventoryLIFOReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant