Summary of Receivables, Contract Assets and Contract Liabilities from Contracts with Customers (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 30, 2017
Contract With Customer Asset And Liability [Abstract]
Trade receivables, net	$ 646	$ 650
Short-term contract assets	25	20
Long-term contract assets	19	11
Short-term contract liabilities	54	$ 60
Long-term contract liabilities	$ 1

For an unclassified balance sheet, the amount due from customers or clients for goods or services that have been delivered or sold in the normal course of business, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.

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