Fair Value Measurements - Interest Rate Swaps (Details) - USD ($) $ in Millions	Dec. 29, 2018	Dec. 30, 2017
Derivatives, Fair Value [Line Items]
Interest rate swaps	$ 19	$ 13
Derivatives designated as hedging instruments
Derivatives, Fair Value [Line Items]
Interest rate swaps	19	13
Derivatives designated as hedging instruments | Other current assets
Derivatives, Fair Value [Line Items]
Interest rate swaps	8	1
Derivatives designated as hedging instruments | Other noncurrent assets
Derivatives, Fair Value [Line Items]
Interest rate swaps	$ 11	$ 12