Divestitures (Fiscal 2015 Divestiture) (Details) - USD ($) $ in Millions	Jul. 31, 2014	Apr. 01, 2016	Apr. 03, 2015	[1]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Current assets of discontinued operations		$ 0	$ 806
Current liabilities of discontinued operations		0	691
Liabilities of discontinued operations - long-term		$ 0	$ 754
European GBS - IS&S | European Healthcare
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amount of cash consideration received	$ 3
Pre-tax loss on divestiture	22
Current assets of discontinued operations	54
Cash and cash equivalents	21
Noncurrent assets of divested entity	25
Current liabilities of discontinued operations	33
Liabilities of discontinued operations - long-term	$ 23

[1] Certain prior year balances were adjusted to give effect to discontinued operations as described in Note 4, for certain errors in previously issued financial statements related to income taxes as described in Note 1, and for the retrospective application of ASU 2015-17 and ASU 2016-09 as described in Note 1.