Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2017	Apr. 01, 2016	Apr. 03, 2015
Summary Of Significant Accounting Policies Statement [Line Items]
Rebate Reserves	$ 18	$ 20
Allowance for doubtful accounts	8	16
Advertising costs and other promotional costs	212	211	$ 326
Deferred commissions	$ 77	74
Credit Risk | Accounts Receivable | One Distributor
Summary Of Significant Accounting Policies Statement [Line Items]
Concentration risk percentage	10.00%
Minimum
Summary Of Significant Accounting Policies Statement [Line Items]
Useful lives of intangible assets (in years)	1 year
Maximum
Summary Of Significant Accounting Policies Statement [Line Items]
Useful lives of intangible assets (in years)	11 years
Buildings | Minimum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	20 years
Buildings | Maximum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	30 years
Computer hardware and software | Minimum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	3 years
Computer hardware and software | Maximum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	5 years
Office furniture and equipment | Minimum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	3 years
Office furniture and equipment | Maximum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	5 years
Building Improvements | Minimum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	7 years
Building Improvements | Maximum
Summary Of Significant Accounting Policies Statement [Line Items]
Property, plant, equipment useful life (in years)	20 years
Restricted Stock Units (RSUs)
Summary Of Significant Accounting Policies Statement [Line Items]
Dividend equivalent rights accrued	$ 45	75
Enterprise Security
Summary Of Significant Accounting Policies Statement [Line Items]
Rebate Reserves	$ 11	$ 12