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Revenues (Schedule of Remaining Performance Obligations) (Details) - USD ($) $ in Millions	3 Months Ended
	Jul. 05, 2019	Jun. 29, 2018	Mar. 29, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 1,247	$ 1,156
Revenue recognized from beginning contract liabilities	920	848
Amortization expense from capitalized contract acquisition costs	28	23
Revenue, remaining performance obligation	2,506
Customer deposit liabilities	416		$ 505
Impairment loss	0	0
Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	1,247	1,156
Enterprise Security
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation	1,911
Enterprise Security \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	611	556
Consumer Cyber Safety
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation	595
Transferred at Point in Time \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	106	111
Transferred at Point in Time \| Enterprise Security \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	93	99
Transferred at Point in Time \| Consumer Cyber Safety \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	13	12
Transferred over Time \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	1,141	1,045
Transferred over Time \| Enterprise Security \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	518	457
Transferred over Time \| Consumer Cyber Safety \| Reportable Segments
Disaggregation of Revenue [Line Items]
Revenues	$ 623	$ 588