XML 86 R71.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Employee Benefit Plans (Schedule Of Consolidated Plan Assets Using The Fair Value Hierarchy) (Details) - Pension Plan - USD ($) $ in Thousands | Sep. 30, 2017 | Oct. 01, 2016 | Oct. 03, 2015
--- | --- | --- | ---
Defined Benefit Plan Disclosure |  |  |
Total investments at fair value | $ 898,180 |  |
Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Total investments at fair value | 40,425 | $ 43,203 | $ 29,802
U.S. Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 718,002 | 372,305 |
Investments measured at fair value using NAV practical expedient | 38,272 | 302,713 |
Total investments at fair value | 756,274 | 675,018 | 578,783
U.S. Plans | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 710,166 | 68,574 |
Total investments at fair value | 710,166 | 68,574 |
U.S. Plans | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 7,372 | 303,142 |
Total investments at fair value | 7,372 | 303,142 |
U.S. Plans | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 464 | 589 |
Total investments at fair value | 464 | 589 | 866
U.S. Plans | Mutual funds | Equity funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 302,652 | 214,374 |
U.S. Plans | Mutual funds | Equity funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 302,652 | 0 |
U.S. Plans | Mutual funds | Equity funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 214,374 |
U.S. Plans | Mutual funds | Equity funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Mutual funds | Fixed income funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 323,008 | 45,709 |
U.S. Plans | Mutual funds | Fixed income funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 323,008 | 0 |
U.S. Plans | Mutual funds | Fixed income funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 45,709 |
U.S. Plans | Mutual funds | Fixed income funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Fixed income securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value |  | 24,097 |
U.S. Plans | Fixed income securities | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value |  | 0 |
U.S. Plans | Fixed income securities | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value |  | 24,097 |
U.S. Plans | Fixed income securities | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value |  | 0 |
U.S. Plans | Employer securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 83,246 | 68,574 |
U.S. Plans | Employer securities | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 83,246 | 68,574 |
U.S. Plans | Employer securities | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Employer securities | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Money market funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 7,372 | 18,962 |
U.S. Plans | Money market funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Money market funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 7,372 | 18,962 |
U.S. Plans | Money market funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 1,260 | 0 |
U.S. Plans | Cash and cash equivalents | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 1,260 | 0 |
U.S. Plans | Cash and cash equivalents | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Cash and cash equivalents | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Insurance contract |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 464 | 589 |
U.S. Plans | Insurance contract | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Insurance contract | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
U.S. Plans | Insurance contract | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 464 | 589 |
Non-U.S. Plans |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 141,906 | 135,439 |
Investments measured at fair value using NAV practical expedient | 0 | 0 |
Total investments at fair value | 141,906 | 135,439 | 117,693
Non-U.S. Plans | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 8,128 | 5,004 |
Total investments at fair value | 8,128 | 5,004 |
Non-U.S. Plans | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 93,817 | 87,821 |
Total investments at fair value | 93,817 | 87,821 |
Non-U.S. Plans | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 39,961 | 42,614 |
Total investments at fair value | 39,961 | 42,614 | $ 28,936
Non-U.S. Plans | Mutual funds | Equity funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 15,529 | 15,698 |
Non-U.S. Plans | Mutual funds | Equity funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Mutual funds | Equity funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 15,529 | 15,698 |
Non-U.S. Plans | Mutual funds | Equity funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Mutual funds | Fixed income funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 16,440 | 17,187 |
Non-U.S. Plans | Mutual funds | Fixed income funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Mutual funds | Fixed income funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 16,440 | 17,187 |
Non-U.S. Plans | Mutual funds | Fixed income funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Equity |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 8,080 | 4,931 |
Non-U.S. Plans | Equity | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 8,080 | 4,931 |
Non-U.S. Plans | Equity | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Equity | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Fixed income securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 14,488 | 12,633 |
Non-U.S. Plans | Fixed income securities | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Fixed income securities | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 14,488 | 12,633 |
Non-U.S. Plans | Fixed income securities | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Unit linked life insurance funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 41,054 | 36,889 |
Non-U.S. Plans | Unit linked life insurance funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Unit linked life insurance funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 41,054 | 36,889 |
Non-U.S. Plans | Unit linked life insurance funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Money market funds |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 814 | 553 |
Non-U.S. Plans | Money market funds | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Money market funds | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 814 | 553 |
Non-U.S. Plans | Money market funds | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 48 | 73 |
Non-U.S. Plans | Cash and cash equivalents | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 48 | 73 |
Non-U.S. Plans | Cash and cash equivalents | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Cash and cash equivalents | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Insurance contract |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 45,453 | 47,475 |
Non-U.S. Plans | Insurance contract | Level 1 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 0 | 0 |
Non-U.S. Plans | Insurance contract | Level 2 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | 5,492 | 4,861 |
Non-U.S. Plans | Insurance contract | Level 3 |  |  |
Defined Benefit Plan Disclosure |  |  |
Investments at fair value | $ 39,961 | $ 42,614 |

X
- Definition Defined Benefit Plan, Fair Value of Plan Assets Excluding Investments Measured at Net Asset Value + References No definition available. + Details
Name: | mog_DefinedBenefitPlanFairValueofPlanAssetsExcludingInvestmentsMeasuredatNetAssetValue
Namespace Prefix: | mog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Defined Benefit Plans, Investments Measured at Net Asset Value + References No definition available. + Details
Name: | mog_DefinedBenefitPlansInvestmentsMeasuredatNetAssetValue
Namespace Prefix: | mog_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MutualFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_EquityFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_FixedIncomeFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=mog_EmployerSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=mog_InsuranceContractsAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=mog_UnitlinkedlifeinsurancefundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |