Discontinued Operations Carrying Amounts of Major Assets and Liabilities (Details) $ in Millions	Oct. 31, 2015 USD ($) business	Jul. 31, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of businesses held for sale | business	3
Demandforce, QuickBase, and Quicken
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable	$ 14	$ 19
Deferred income taxes	0	5
Prepaid and other current assets	3	2
Property and equipment, net	18	25
Goodwill	156	165
Purchased intangible assets, net	43	43
Other assets	2	2
Total assets	236	261
Accounts payable	7	7
Accrued compensation	13	21
Deferred revenue	45	48
Other current liabilities	8	17
Long-term deferred revenue	38	39
Long-term obligations	16	29
Total liabilities	127	161
Net assets	$ 109	$ 100