Segment Information (Schedule of Reportable Segment Data) (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2017	Jul. 01, 2016
Segment Reporting Information [Line Items]
Net revenues	$ 1,175	$ 884
Operating income	(44)	106
Operating Segments
Segment Reporting Information [Line Items]
Net revenues	1,175	884
Operating income	324	253
Operating Segments | Enterprise Security:
Segment Reporting Information [Line Items]
Net revenues	646	481
Operating income	94	28
Operating Segments | Consumer Digital Safety:
Segment Reporting Information [Line Items]
Net revenues	529	403
Operating income	$ 230	$ 225