Cash Investment Limit For Acquisition of Business

No definition available.

Name:	pmtc_CashInvestmentLimitForAcquisitionOfBusiness
Namespace Prefix:	pmtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Component of Base Rate, Basis Spread on Adjusted LIBOR

+ References

No definition available.

+ Details

Name:	pmtc_ComponentOfBaseRateBasisSpreadOnAdjustedLibor
Namespace Prefix:	pmtc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Component of Base Rate, Basis Spread on Federal Funds Effective Rate

+ References

No definition available.

+ Details

Name:	pmtc_ComponentOfBaseRateBasisSpreadOnFederalFundsEffectiveRate
Namespace Prefix:	pmtc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Consolidated trailing four quarters EBITDA less capital expenditures to consolidated fixed charges

+ References

No definition available.

+ Details

Name:	pmtc_DebtCovenantFixedChargeCoverageRatioMinimum
Namespace Prefix:	pmtc_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Consolidated funded indebtedness to consolidated trailing four quarters EBITDA

+ References

No definition available.

+ Details

Name:	pmtc_DebtCovenantLeverageRatioMaximum
Namespace Prefix:	pmtc_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument, Number of Banks in Credit Facility

+ References

No definition available.

+ Details

Name:	pmtc_DebtInstrumentNumberofBanksinCreditFacility
Namespace Prefix:	pmtc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Actual fixed charge coverage ratio -- metric for determining debt covenant compliance

+ References

No definition available.

+ Details

Name:	pmtc_FixedChargeCoverageRatioActual
Namespace Prefix:	pmtc_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Investment in Foreign Subsidiaries Authorized Amount

+ References

No definition available.

+ Details

Name:	pmtc_InvestmentInForeignSubsidiariesAuthorizedAmount
Namespace Prefix:	pmtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Actual leverage ratio -- metric for determining compliance with debt covenant

+ References

No definition available.

+ Details

Name:	pmtc_LeverageRatioActual
Namespace Prefix:	pmtc_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Line of Credit Facility, Variable Interest Rate, Length of Time Between Updates

+ References

No definition available.

+ Details

Name:	pmtc_LineOfCreditFacilityVariableInterestRateLengthOfTimeBetweenUpdates
Namespace Prefix:	pmtc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Voting interest in foreign subsidiaries pledged against credit facility

+ References

No definition available.

+ Details

Name:	pmtc_VotingInterestInForeignSubsidiariesPledgedAgainstCreditFacility
Namespace Prefix:	pmtc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of the required periodic payment applied to interest.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityPeriodicPaymentInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

+ Details

Name:	us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

+ Details

Name:	us-gaap_PaymentsOfDebtIssuanceCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ProceedsFromLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_RepaymentsOfLinesOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_BaseRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pmtc_RevolvingLoanResetPeriodOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pmtc_RevolvingLoanResetPeriodTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pmtc_RevolvingLoanResetPeriodThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=pmtc_RevolvingLoanResetPeriodFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Long Term Debt (Details) $ in Thousands		12 Months Ended
Long Term Debt (Details) $ in Thousands	Nov. 04, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($) bank	Sep. 30, 2013 USD ($)	Oct. 06, 2016
Debt Instrument [Line Items]
Credit facility, borrowings outstanding		$ 668,100
term loan outstanding	$ (475,000)	128,750	$ 1,032,500	$ 111,875
Borrowings under credit facility		$ 185,000	1,386,250	0
Voting interest in foreign subsidiaries pledged against credit facility		65.00%
Investment limit in foreign subsidiaries		$ 75,000
Cash investment limit for acquisition of business		$ 150,000
Maximum leverage ratio allowed under debt covenant		3.00
Minimum fixed charge coverage ratio allowed under debt covenant	3.50
Leverage ratio, actual		2.45
Fixed charge coverage ratio, actual		6.54
Credit facility, origination costs			7,900
Credit facility, periodic interest payment		$ 10,100	$ 5,700	$ 5,800
Credit facility, average interest rate during period		1.70%	1.60%	1.70%
Maximum [Member]
Debt Instrument [Line Items]
Credit facility, variable interest rate, length of time between updates		180 days
Minimum [Member]
Debt Instrument [Line Items]
Credit facility, variable interest rate, length of time between updates		30 days
Term Loan [Member]
Debt Instrument [Line Items]
Number of banks in credit agreement \| bank			16
Credit facility, current maximum amount		$ 500,000
Credit facility, term loan, repayments of principal due in 2016		50,000
Credit facility, term loan, repayments of principal due in 2017		50,000
Credit facility, term loan, repayments of principal due in 2018		75,000
Credit facility, term loan, repayments of principal due in 2019		300,000
Credit facility, borrowings outstanding		475,000
Line of Credit [Member]
Debt Instrument [Line Items]
Credit facility, current maximum amount		1,000,000
Credit facility, borrowings outstanding		$ 193,100
Credit facility, revolving loan, basis spread on federal funds effective rate		0.005%
Credit facility, revolving loan, basis spread on adjusted LIBOR		1.00%
Line of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Credit facility, revolving loan, commitment fees percentage		0.25%
Line of Credit [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Credit facility, revolving loan, commitment fees percentage		0.175%
LIBOR for Eurodollar-Based Borrowings [Member] \| Line of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.50%
LIBOR for Eurodollar-Based Borrowings [Member] \| Line of Credit [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		1.25%
Base Rate [Member] \| Line of Credit [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.50%
Base Rate [Member] \| Line of Credit [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.25%
Revolving Loan, Reset December 17, 2015 \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, term loan, interest rate at period end		1.875%
Revolving Loan, Reset December 17, 2015 \| Line of Credit [Member]
Debt Instrument [Line Items]
Credit facility, borrowings outstanding		$ 43,100
Revolving Loan, Reset November 20, 2015 \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, term loan, interest rate at period end		1.875%
Revolving Loan, Reset November 20, 2015 \| Line of Credit [Member]
Debt Instrument [Line Items]
Credit facility, borrowings outstanding		$ 50,000
Revolving Loan, Reset October 6, 2015 \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, term loan, interest rate at period end		1.75%
Revolving Loan, Reset October 6, 2015 \| Line of Credit [Member]
Debt Instrument [Line Items]
Credit facility, borrowings outstanding		$ 100,000
Subsequent Event [Member] \| Revolving Loan, Reset January 6, 2016 \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, term loan, interest rate at period end					1.875%