(Schedule of Reportable Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017
Segment Reporting Information [Line Items]
Net revenues	$ 1,211	$ 1,209	$ 3,542	$ 3,624
Operating income	169	96	273	43
Reportable Segments
Segment Reporting Information [Line Items]
Net revenues	1,211	1,209	3,542	3,624
Operating income	388	438	1,073	1,161
Reportable Segments | Enterprise Security
Segment Reporting Information [Line Items]
Net revenues	609	625	1,739	1,957
Operating income	91	136	227	377
Reportable Segments | Consumer Digital Safety
Segment Reporting Information [Line Items]
Net revenues	602	584	1,803	1,667
Operating income	$ 297	$ 302	$ 846	$ 784