Basis of Presentation and Significant Accounting Policies (Details) - USD ($) $ in Millions	Mar. 30, 2019	Dec. 30, 2018	Dec. 29, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 214		$ 0
Operating lease liabilities	$ 251
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 228
Operating lease liabilities		$ 261