v2.4.0.6
Document And Entity Information
3 Months Ended
Dec. 31, 2011
Feb. 03, 2012
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2011  
Entity Registrant Name PARAMETRIC TECHNOLOGY CORP  
Entity Central Index Key 0000857005  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2012  
Document Fiscal Period Focus Q1  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   119,103,630