Leases (Schedule of Rental Expense for Facilities and Equipment) (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 28, 2018	Dec. 29, 2017
Leases [Abstract]
Gross rental expense	$ 163	$ 181
Less: sublease income	(1)	(3)
Net rental expense	$ 162	$ 178

This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 25
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Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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Name:	us-gaap_OperatingLeasesRentExpenseMinimumRentals
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration