Expansion option to increase credit facility

No definition available.

Name:	mog_Expansionoptiontoincreasecreditfacility
Namespace Prefix:	mog_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Minimum borrowing requirement for the Securitization Program

+ References

No definition available.

+ Details

Name:	mog_MinimumborrowingrequirementfortheSecuritizationProgram
Namespace Prefix:	mog_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of borrowing base on the Securitization Program used in the computation of the minimum borrowing requirement.

+ References

No definition available.

+ Details

Name:	mog_PercentageofborrowingbaseontheSecuritizationProgram
Namespace Prefix:	mog_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of borrowing capacity on the Securitization Program used in the computation of the minimum borrowing requirement.

+ References

No definition available.

+ Details

Name:	mog_PercentageofborrowingcapacityontheSecuritizationProgram
Namespace Prefix:	mog_
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

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
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+ Details

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

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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-Paragraph 6
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+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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

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_LineOfCreditFacilityLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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 borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Definition

The carrying amount, as of the date of the latest financial statement presented, of other assets which are owned but transferred to serve as collateral for the payment of the related debt obligation, primarily a secured borrowing or repurchase agreement, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
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+ Details

Name:	us-gaap_PledgedAssetsNotSeparatelyReportedOtherFinancialInstruments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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

- Details

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

- Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember
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Period Type:

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Indebtedness (Narrative) (Details) - USD ($) $ in Thousands				12 Months Ended
Indebtedness (Narrative) (Details) - USD ($) $ in Thousands	Oct. 16, 2019	Oct. 15, 2019	Sep. 03, 2019	Sep. 28, 2019	Sep. 29, 2018	Nov. 21, 2014
Line of Credit Facility
Pledged Assets, Net Book Value				$ 1,641,952
Unused borrowing capacity				708,779
U.S. Revolving Credit Facility
Line of Credit Facility
Outstanding borrowings				395,712	$ 430,000
SECT Revolving Credit Facility
Line of Credit Facility
Outstanding borrowings				$ 7,000	$ 0
Line of Credit \| U.S. Revolving Credit Facility
Line of Credit Facility
Debt, Weighted Average Interest Rate				3.68%
Applicable margin in interest rate of revolving credit facility, basis points				1.63%
Unused borrowing capacity				$ 669,838
Line of Credit \| SECT Revolving Credit Facility
Line of Credit Facility
Line of Credit Facility, Current Borrowing Capacity			$ 35,000
Applicable margin in interest rate of revolving credit facility, basis points			2.13%
Senior Notes
Line of Credit Facility
Debt Instrument, Face Amount				$ 300,000
Debt Instrument, Interest Rate, Stated Percentage				5.25%
Debt Instrument, Interest Rate, Effective Percentage						5.73%
Securitization program
Line of Credit Facility
Interest rate on other revolving credit facilities				2.86%
Minimum borrowing requirement for the Securitization Program				$ 104,000
Subsequent Event \| Line of Credit \| U.S. Revolving Credit Facility
Line of Credit Facility
Line of Credit Facility, Current Borrowing Capacity		$ 1,100,000
Expansion option to increase credit facility		$ 400,000
Subsequent Event \| Securitization program
Line of Credit Facility
Maximum credit facility amount that can borrow	$ 130,000
Percentage of borrowing capacity on the Securitization Program	80.00%
Percentage of borrowing base on the Securitization Program	100.00%