Discontinued Operations Carrying Amounts of Major Assets and Liabilities (Details) $ in Millions	Jan. 31, 2016 USD ($) business	Jul. 31, 2015 USD ($) business
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of businesses held for sale | business	3	3
Demandforce, QuickBase, and Quicken
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable	$ 28	$ 19
Deferred income taxes	0	5
Prepaid and other current assets	2	2
Property and equipment, net	19	25
Goodwill	151	165
Purchased intangible assets, net	43	43
Other assets	2	2
Total assets	245	261
Accounts payable	8	7
Accrued compensation	20	21
Deferred revenue	56	48
Other current liabilities	13	17
Long-term deferred revenue	52	39
Long-term obligations	16	29
Total liabilities	165	161
Net assets	$ 80	$ 100