Fair Value Measurements Interest Rate Swaps (Details) - USD ($) $ in Millions	Dec. 28, 2019	Dec. 29, 2018
Derivatives, Fair Value [Line Items]
Interest rate swaps		$ 19
Interest rate swaps liabilities	$ (1)
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Interest rate swaps	0	19
Interest rate swaps, at fair value, net	(1)	19
Derivatives designated as hedging instruments | Other current assets
Derivatives, Fair Value [Line Items]
Interest rate swaps	0	8
Derivatives designated as hedging instruments | Other noncurrent assets
Derivatives, Fair Value [Line Items]
Interest rate swaps	0	11
Derivatives designated as hedging instruments | Other long-term liabilities
Derivatives, Fair Value [Line Items]
Interest rate swaps liabilities	$ (1)	$ 0