Supplementary Information (Cash and Cash Equivalents) (Details) - USD ($) $ in Millions	Dec. 28, 2018	Mar. 30, 2018
Supplementary Information [Abstract]
Cash	$ 313	$ 1,016
Cash equivalents	1,996	758
Total cash and cash equivalents	$ 2,309	$ 1,774	[1]

[1] Derived from audited financial statements.