Discontinued Operations Net Income (Loss) from Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue from discontinued operations	$ 56	$ 59	$ 115	$ 120
Income (loss) from discontinued operations before income taxes	(9)	(9)	(5)	(14)
Net income (loss) from discontinued operations	(5)	(6)	(5)	(9)
Tax expense from discontinued operations	0	0	(3)	0
Demandforce
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue from discontinued operations	24	30	49	61
Income (loss) from discontinued operations before income taxes	(6)	(14)	(10)	(28)
Net income (loss) from discontinued operations	(3)	(10)	(6)	(19)
QuickBase
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue from discontinued operations	20	17	40	34
Income (loss) from discontinued operations before income taxes	2	4	6	7
Net income (loss) from discontinued operations	1	3	4	5
Quicken
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenue from discontinued operations	12	12	26	25
Income (loss) from discontinued operations before income taxes	(5)	1	(1)	7
Net income (loss) from discontinued operations	$ (3)	$ 1	$ 0	$ 5