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Shareholders' Equity (Changes in Shareholders' Equity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Apr. 04, 2015	Mar. 29, 2014	Apr. 04, 2015	Mar. 29, 2014	Sep. 27, 2014
Shareholders' Equity [Line Items]
Beginning of Period			$ 1,347,415us-gaap_StockholdersEquity
Net earnings	32,093us-gaap_NetIncomeLoss	37,725us-gaap_NetIncomeLoss	67,358us-gaap_NetIncomeLoss	69,822us-gaap_NetIncomeLoss
Other Comprehensive Income (Loss), Net of Tax	(31,780)us-gaap_OtherComprehensiveIncomeLossNetOfTax	1,287us-gaap_OtherComprehensiveIncomeLossNetOfTax	(68,862)us-gaap_OtherComprehensiveIncomeLossNetOfTax	9,111us-gaap_OtherComprehensiveIncomeLossNetOfTax
End of Period	1,154,978us-gaap_StockholdersEquity		1,154,978us-gaap_StockholdersEquity
Class A Common Stock [Member]
Shareholders' Equity [Line Items]
Common Stock, Beginning of Period			43,627,531us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Conversion for Class B to Class A			7,169us-gaap_ConversionOfStockSharesConverted1 / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Common Stock, End of Period	43,634,700us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember		43,634,700us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Treasury Stock, Beginning of Period			(5,806,702)us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Issuance of treasury shares, Shares			518,785us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Purchase of treasury shares, Shares			(2,810,228)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Treasury Stock, End of Period	(8,098,145)us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember		(8,098,145)us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
TOTAL SHAREHOLDERS' EQUITY, Shares	35,536,555us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember		35,536,555us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassAMember
Class B Common Stock [Member]
Shareholders' Equity [Line Items]
Common Stock, Beginning of Period			7,652,182us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Conversion for Class B to Class A			(7,169)us-gaap_ConversionOfStockSharesConverted1 / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Common Stock, End of Period	7,645,013us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember		7,645,013us-gaap_CommonStockSharesIssued / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Treasury Stock, Beginning of Period			(3,319,038)us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Issuance of treasury shares, Shares			0us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Purchase of treasury shares, Shares			(4,483)us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Treasury Stock, End of Period	(3,323,521)us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember		(3,323,521)us-gaap_TreasuryStockShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
SECT, Beginning of Period			(710,841)mog_SECTShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Purchase of stock held by Stock Employee Compensation Trust, Shares			(116,531)mog_PurchaseOfStockHeldByStockEmployeeCompensationTrustShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
SECT, End of Period	(827,372)mog_SECTShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember		(827,372)mog_SECTShares / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
TOTAL SHAREHOLDERS' EQUITY, Shares	3,494,120us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember		3,494,120us-gaap_CommonStockSharesOutstanding / us-gaap_StatementClassOfStockAxis = us-gaap_CommonClassBMember
Common Stock [Member]
Shareholders' Equity [Line Items]
Beginning of Period					51,280us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
End of Period	51,280us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember		51,280us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember		51,280us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember
Additional Paid-In Capital [Member]
Shareholders' Equity [Line Items]
Beginning of Period			463,965us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Equity-based compensation expense			3,966us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Issuance of treasury shares at more than cost			(4,668)us-gaap_AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Adjustment To Marker Sect And Other			10,355mog_AdjustmentToMarketSectAndOther / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
End of Period	473,618us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember		473,618us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember
Retained Earnings [Member]
Shareholders' Equity [Line Items]
Beginning of Period			1,447,911us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Net earnings			67,358us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
End of Period	1,515,269us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember		1,515,269us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember
Treasury Stock [Member]
Shareholders' Equity [Line Items]
Beginning of Period			(360,445)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Issuance of treasury shares			15,210us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Purchase of treasury shares			(202,888)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
End of Period	(548,123)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember		(548,123)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Stock Employee Compensation Trust (Sect) [Member]
Shareholders' Equity [Line Items]
Beginning of Period			(48,458)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = mog_StockEmployeeCompensationTrustSectMember
Purchase of stock held by Stock Employee Compensation Trust			(8,440)mog_PurchaseOfStockHeldByStockEmployeeCompensationTrust / us-gaap_StatementEquityComponentsAxis = mog_StockEmployeeCompensationTrustSectMember
Adjustment to market - SECT			(4,468)mog_AdjustmentToMarket / us-gaap_StatementEquityComponentsAxis = mog_StockEmployeeCompensationTrustSectMember
End of Period	(61,366)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = mog_StockEmployeeCompensationTrustSectMember		(61,366)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = mog_StockEmployeeCompensationTrustSectMember
Accumulated Other Comprehensive (Loss) Income [Member]
Shareholders' Equity [Line Items]
Beginning of Period			(206,838)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
Other Comprehensive Income (Loss), Net of Tax			(68,862)us-gaap_OtherComprehensiveIncomeLossNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember
End of Period	$ (275,700)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember		$ (275,700)us-gaap_StockholdersEquity / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember

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Adjustment to market.

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Adjustment to market for Sect and other changes.

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Purchase of stock held by Stock Employee Compensation Trust.

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This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

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Amount of decrease in additional paid in capital (APIC) resulting from direct costs associated with issuing stock. Includes, but is not limited to, legal and accounting fees and direct costs associated with stock issues under a shelf registration.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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Number of share options (or share units) exercised during the current period.

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Value of stock issued as a result of the exercise of stock options.

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