Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Intuit Websites [Member]
Discontinued Operations (Textuals)
Net revenue from discontinued operations	$ 76	$ 79	$ 52
Discontinued operation, income from discontinued operation during phase-out period, net of tax	11	18	25
Discontinued operation, tax effect of income from disposal of discontinued operations	(36)
Intuit Real Estate Solutions [Member]
Discontinued Operations (Textuals)
Net revenue from discontinued operations			33
Discontinued operation, tax effect of income from disposal of discontinued operations			23
Gross proceeds from sale of business			128
Net gain on disposal of business			35
Goodwill as a result of sale of discontinued operation			72
Maximum [Member] | Intuit Real Estate Solutions [Member]
Discontinued Operations (Textuals)
Discontinued operation, income from discontinued operation during phase-out period, net of tax			$ 1