Document and Entity Information	3 Months Ended
	Jan. 03, 2015	Feb. 09, 2015
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 03, 2015
Entity Registrant Name	PTC Inc.
Entity Central Index Key	0000857005
Current Fiscal Year End Date	--09-30
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		114,926,977