Derivative Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2016	Jan. 02, 2016
Interest Rate Swaps
Derivative
Notional Amount, Derivative	$ 135,000
Conversion Rate Of Interest Rate Swaps From Variable to Fixed	2.47%
Basis Spread on Variable Rate Derivative	1.63%
Foreign Currency Contracts
Derivative
Notional Amount, Derivative	$ 56,537
Designated as Hedging Instrument
Derivative
Cash Flow Hedge Ineffectiveness is Immaterial	not material	not material
Not Designated as Hedging Instrument
Derivative
Notional Amount, Derivative	$ 121,302

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Conversion rate of interest rate swaps.

+ References

No definition available.

+ Details

Name:	mog_ConversionRateOfInterestRateSwapsFromVariableToFixed
Namespace Prefix:	mog_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

A disclosure of an assertion that the amount of cash flow hedge ineffectiveness is immaterial.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

+ Details

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

- Definition

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

+ References

No definition available.

+ Details

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

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

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_DesignatedAsHedgingInstrumentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_HedgingDesignationAxis=us-gaap_NondesignatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: