Document and Entity Information - shares	9 Months Ended
	Apr. 30, 2016	May. 18, 2016
Document and Entity Information [Abstract]
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	Apr. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		255,871,261