Balance Sheet Details - Other Current Assets (Narrative) (Details) - USD ($)	Sep. 01, 2017	Aug. 31, 2017	Jul. 31, 2017	Apr. 01, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Face amount of debt instrument				$ 3,500,000,000
Shareholders | Non-Core Software Seattle SpinCo with Micro Focus | Subsequent Event | Spin-off
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Dividends	$ 2,500,000,000	$ 2,500,000,000
Senior Notes
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Face amount of debt instrument				$ 1,500,000,000.0
$2,600 issued at discount to par at a price of 99.750% in June 2017 at three-month LIBOR plus 2.75%, due June 21, 2024, interest payable quarterly | Senior Notes
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Face amount of debt instrument			$ 2,600,000,000.0