Discontinued Operations (Income (Loss) From Discontinued Operations) (Details) - Information Management - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Sep. 30, 2016	Jul. 01, 2016	Oct. 02, 2015	Sep. 30, 2016	Oct. 02, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net revenues	$ 51		$ 592	$ 123	$ 1,179
Cost of revenues	(6)		(104)	(9)	(200)
Operating expenses	0		(385)	(24)	(758)
Gain on sale of Veritas	0	$ 38	0	38	0
Other expense, net	(2)		(1)	0	(6)
Income from discontinued operations before income tax	43		102	128	215
Income taxes expense (benefit)	118		(1)	134	20
Income (loss) from discontinued operations, net of income taxes	$ (75)		$ 103	$ (6)	$ 195