Discontinued Operations (Narrative) (Details) - Information Management - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2017	Apr. 01, 2016
Other income, net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operation after disposal	$ 22	$ 8
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	71	330
Service and Maintenance Rights | Deferred Revenue
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Intangible assets, net	$ 41	$ 131