(Schedule of Reportable Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 28, 2018	Sep. 29, 2017	Sep. 28, 2018	Sep. 29, 2017
Segment Reporting Information [Line Items]
Net revenues	$ 1,175	$ 1,240	$ 2,331	$ 2,415
Operating income	102	(9)	104	(53)
Operating Segments
Segment Reporting Information [Line Items]
Net revenues	1,175	1,240	2,331	2,415
Operating income	366	399	685	723
Operating Segments | Enterprise Security
Segment Reporting Information [Line Items]
Net revenues	574	686	1,130	1,332
Operating income	80	147	136	241
Operating Segments | Consumer Digital Safety
Segment Reporting Information [Line Items]
Net revenues	601	554	1,201	1,083
Operating income	$ 286	$ 252	$ 549	$ 482