Discontinued Operations (Narrative) (Details) $ in Millions		12 Months Ended
	Jan. 29, 2016 USD ($) shares	Apr. 01, 2016 USD ($) segment	Apr. 03, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of reportable segments | segment		2
Information Management | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration	$ 6,600
Gain on sale of information management business		$ 3,000
Intangible assets, net			$ 103
Information Management | Discontinued Operations, Disposed of by Sale | Other income, net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operation after disposal		8
Information Management | Discontinued Operations, Disposed of by Sale | Customer Relationships and Customer Contracts | Deferred Revenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets, net		330
Information Management | Discontinued Operations, Disposed of by Sale | Service and Maintenance Rights | Deferred Revenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets, net		$ 131
Common Class B | Information Management | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Shares received (in shares) | shares	40,000,000