Discontinued Operations (Income (Loss) from Discontinued Operations) (Details) - Information Management - Discontinued Operations, Disposed of by Sale - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2017	Apr. 01, 2016	Apr. 03, 2015
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net revenues	$ 172	$ 1,968	$ 2,552
Cost of revenues	(15)	(334)	(426)
Operating expenses	(26)	(1,270)	(1,131)
Gain on sale of Veritas	31	4,060	0
Other income (expense), net	1	3	(3)
Income from discontinued operations before income taxes	163	4,427	992
Provision for income taxes	33	1,118	223
Income from discontinued operations, net of income taxes	$ 130	$ 3,309	$ 769

Disposal Group, Including Discontinued Operation, Other Income (Expense), Net

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Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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Amount before tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until its disposal.

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Amount after tax of income (loss) from operations classified as a discontinued operation. Excludes gain (loss) on disposal and provision for gain (loss) until disposal.

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Amount of tax expense (benefit) attributable to income (loss) from operations classified as a discontinued operation. Excludes tax expense (benefit) for gain (loss) on disposal and for provision for gain (loss) until disposal.

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Amount of costs of goods sold attributable to disposal group, including, but not limited to, discontinued operation.

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Amount of operating expense attributable to disposal group, including, but not limited to, discontinued operation.

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