Segment and Geographic Information (Schedule Of Long-Lived Assets By Geographic Location) (Details) - USD ($) $ in Millions		Mar. 31, 2017	Apr. 01, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net		$ 937	$ 957
U.S.
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net		822	809
Foreign countries
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	[1]	$ 115	$ 148

[1] No individual country represented more than 10% of the respective totals.