Other Changes In Plan Assets and Benefit Obligations Recognized In Other Comprehensive Loss (Income) (Detail) - North America - USD ($) $ in Millions	12 Months Ended
Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated other comprehensive loss (income) at beginning of year	$ (2)	$ 38	$ 76
Net loss (gain)	37	(40)	(38)
Accumulated other comprehensive loss (income) at end of year	35	(2)	38
Other Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated other comprehensive loss (income) at beginning of year		(1)	(1)
Net loss (gain)	(1)	$ 1
Accumulated other comprehensive loss (income) at end of year	$ (1)		$ (1)

Amount, before tax, after reclassification adjustment, of increase (decrease) in accumulated other comprehensive income from gain (loss) of defined benefit plan.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e637-108580

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669646-108580

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920

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