Segment Information (Schedule Of Reportable Segment Data) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jan. 02, 2015	Dec. 27, 2013	Jan. 02, 2015	Dec. 27, 2013
Segment Reporting Information [Line Items]
Net revenue	$ 1,638	$ 1,705	$ 4,990	$ 5,051
Operating income	327	405	997	877
Operating Segments
Segment Reporting Information [Line Items]
Net revenue	1,638	1,705	4,990	5,051
Operating income	498	509	1,389	1,389
Consumer Security | Operating Segments
Segment Reporting Information [Line Items]
Net revenue	461	517	1,479	1,559
Operating income	245	224	770	673
Enterprise Security | Operating Segments
Segment Reporting Information [Line Items]
Net revenue	509	528	1,572	1,589
Operating income	85	107	240	245
Information Management | Operating Segments
Segment Reporting Information [Line Items]
Net revenue	668	660	1,939	1,903
Operating income	$ 168	$ 178	$ 379	$ 471