Receivables (Schedule of Receivables) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
Apr. 04, 2015	Sep. 27, 2014
Receivables [Abstract]
Accounts receivable	$ 309,625mog_TradeReceivablesGross	$ 332,450mog_TradeReceivablesGross
Long-term contract receivable - Amounts billed	120,570	125,497
Long-term contract receivable - Unbilled recoverable costs and accrued profits	298,669us-gaap_UnbilledContractsReceivable	313,530us-gaap_UnbilledContractsReceivable
Total long-term contract receivables	419,239	439,027
Other	14,069us-gaap_OtherReceivables	13,738us-gaap_OtherReceivables
Total receivables	742,933us-gaap_AccountsReceivableGrossCurrent	785,215us-gaap_AccountsReceivableGrossCurrent
Less allowance for doubtful accounts	(4,997)us-gaap_ProvisionForDoubtfulAccounts	(4,341)us-gaap_ProvisionForDoubtfulAccounts
Receivables	$ 737,936us-gaap_AccountsReceivableNetCurrent	$ 780,874us-gaap_AccountsReceivableNetCurrent

Trade Receivables, Gross

No definition available.

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- Definition

Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 910

-SubTopic 310

-Section 50

-Paragraph 3

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-Topic 210

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-Paragraph 1

-Subparagraph (SX 210.5-02.3(c))

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Subparagraph c

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- Definition

Amounts due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer) for goods or services (including trade receivables) that have been delivered or sold in the normal course of business.

+ References

+ Details

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

+ 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 210.5-02.3-4)

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- Definition

Carrying amounts due as of the balance sheet date from parties or arising from transactions not otherwise specified in the taxonomy.

+ References

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- Definition

Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

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-Subparagraph (a)

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-Number 210

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- Definition

Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date.

+ References

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- Definition

Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ 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 210.5-02.3(c)(3))

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