Reconciliation of the Change in Fair Value of the Pension Plan Assets Calculated based on Level 3 Inputs (Detail) - Europe - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 26, 2015
Schedule of Pension Plan Assets by Fair Value [Line Items]
Currency translation	$ (47)	$ (12)
Significant Unobservable Inputs (Level 3)
Schedule of Pension Plan Assets by Fair Value [Line Items]
Balance at December 26, 2015	8
Currency translation	(1)
Balance at December 31, 2016	$ 7	$ 8

The amount of increase or decrease in plan assets attributed to foreign currency changes. The effects of foreign currency exchange rate changes that are to be disclosed are those applicable to plans of a foreign operation whose functional currency is not the reporting currency.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

Name:	us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration