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Earnings per Share (EPS) and Common Stock (Narrative) (Details) (USD $)
0 Months Ended 3 Months Ended 12 Months Ended
Aug. 04, 2014
Jan. 03, 2015
Dec. 28, 2013
Sep. 30, 2014
Aug. 14, 2014
Accelerated Share Repurchases [Line Items]          
Stock Repurchases Ratio to Total Fixed Purchased Price       70.00%pmtc_StockRepurchasesRatiotoTotalFixedPurchasedPrice  
Stock option excluded from computation of EPS, shares     400,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount    
Common stock, shares authorized   500,000,000us-gaap_CommonStockSharesAuthorized   500,000,000us-gaap_CommonStockSharesAuthorized  
Stock Repurchase Program, Authorized Amount $ 600,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount     $ 100,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount  
Accelerated Share Repurchases, Settlement (Payment) or Receipt         125,000,000us-gaap_AcceleratedShareRepurchasesSettlementPaymentOrReceipt
Stock repurchased during period, shares   1,100,000us-gaap_StockRepurchasedDuringPeriodShares   2,300,000us-gaap_StockRepurchasedDuringPeriodShares  
Additional Paid-in Capital [Member]          
Accelerated Share Repurchases [Line Items]          
Stock Repurchased and Retired During Period, Value       $ 37,500,000us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
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= us-gaap_AdditionalPaidInCapitalMember