Segment Information (Schedule of Reportable Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Segment Reporting Information [Line Items]
Net revenues	$ 979	$ 906	$ 1,863	$ 1,818
Operating income	(12)	100	94	183
Operating Segments
Segment Reporting Information [Line Items]
Net revenues	979	906	1,863	1,818
Operating income	249	283	502	558
Operating Segments | Consumer Security
Segment Reporting Information [Line Items]
Net revenues	405	420	808	850
Operating income	224	232	449	477
Operating Segments | Enterprise Security
Segment Reporting Information [Line Items]
Net revenues	574	486	1,055	968
Operating income	$ 25	$ 51	$ 53	$ 81