Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Aug. 31, 2013	Jan. 31, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	Guidewire Software, Inc.
Entity Central Index Key	0001528396
Current Fiscal Year End Date	--07-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Jul. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		57,943,601
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,500