Business Combination (Other Fiscal 2011 Acquisitions, Schedule Of Purchase Price Allocation) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Apr. 01, 2011
Business Acquisition [Line Items]
Cash payment for acquisition, net of cash acquired	$ 28	$ 508	$ 1,537
Weighted average estimated useful life (in years)	2 years	3 years
GuardianEdge Technologies, Inc [Member]
Business Acquisition [Line Items]
Business acquisition date			Jun. 03, 2010
Net tangible assets			3	[1]
Intangible assets			30	[2]
Goodwill			40	[3]
Total purchase price			73
Other Business Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets			6	[2]
Goodwill			12	[3]
Total purchase price			18
Fiscal 2011 Acquisitions [Member]
Business Acquisition [Line Items]
Cash payment for acquisition, net of cash acquired			81
Cash acquired from acquisition			9
Assumed equity awards, at fair value			1
Acquisition related transaction costs			2
Net tangible assets			3	[1]
Intangible assets			36	[2]
Goodwill			52	[3]
Total purchase price			91
Useful lives of intangible assets			9 years
Deferred Revenue [Member] | Fiscal 2011 Acquisitions [Member]
Business Acquisition [Line Items]
Net tangible assets			17
Deferred Revenue, Adjusted To Fair Value [Member] | Fiscal 2011 Acquisitions [Member]
Business Acquisition [Line Items]
Net tangible assets			2
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted average estimated useful life (in years)	2 years	3 years
Customer Relationships [Member] | Fiscal 2011 Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets			24
Useful lives of intangible assets			3 years
Weighted average estimated useful life (in years)			9 years
Developed Technology [Member]
Business Acquisition [Line Items]
Weighted average estimated useful life (in years)	4 years	4 years
Developed Technology [Member] | Fiscal 2011 Acquisitions [Member]
Business Acquisition [Line Items]
Intangible assets			$ 12
Weighted average estimated useful life (in years)			5 years

[1] Net tangible assets included deferred revenue, which was adjusted down from $17 million to $2 million, representing our estimate of the fair value of the contractual obligation assumed for support services.

[2] Intangible assets included customer relationships of $24 million and developed technology of $12 million, which are amortized over their estimated useful lives of three to nine years. The weighted-average estimated useful lives were 9.0 years for customer relationships and 5.0 years for developed technology.

[3] Goodwill is partially tax deductible. The goodwill amount resulted primarily from our expectation of synergies from the integration of the acquisitions’ product offerings with our existing product offerings.