Income Taxes Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Mar. 23, 2019	Mar. 24, 2018	Dec. 29, 2018
Income Tax Disclosure [Abstract]
Federal Statutory Tax Rate, Pre TCJ Act			35.00%
Federal Statutory Tax Rate, Post TCJ Act	21.00%
Additional Transition Tax	$ 29	$ 1	$ 28
Additional Transition tax per share	$ 0.02		$ 0.02