Document and Entity Information Document (USD $) In Billions, except Share data, unless otherwise specified	6 Months Ended
	Jan. 31, 2013	Feb. 22, 2013	Jan. 31, 2012
Document Information [Line Items]
Entity Registrant Name	INTUIT INC
Entity Central Index Key	0000896878
Current Fiscal Year End Date	--07-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jan. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		296,388,841
Entity Public Float			$ 15.7