Fair Value Measurements Schedule of Fair Value Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 28, 2019	Dec. 29, 2018
Assets
Money market funds		$ 1
Interest rate swaps		19
Total assets		20
Liabilities
Interest rate swaps	$ 1
Level 1
Assets
Money market funds		1
Interest rate swaps		0
Total assets		1
Liabilities
Interest rate swaps	0
Level 2
Assets
Money market funds		0
Interest rate swaps		19
Total assets		19
Liabilities
Interest rate swaps	1
Level 3
Assets
Money market funds		0
Interest rate swaps		0
Total assets		$ 0
Liabilities
Interest rate swaps	$ 0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets.

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Fair value as of the balance sheet date of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as liabilities.

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