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Retirement Benefits (Schedule of estimated remaining cash contributions) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Dec. 31, 2014
United States Pension Plans of US Entity, Defined Benefit [Member] |
Estimated future employer contributions in the currect fiscal year | $ 21 us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
United Kingdom Plan, Defined Benefit [Member] |
Estimated future employer contributions in the currect fiscal year | 1,413 us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = wwd_ForeignPensionPlansDefinedBenefitUnitedKingdomMember
Japan Plan, Defined Benefit [Member] |
Estimated future employer contributions in the currect fiscal year | 0 us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = wwd_ForeignPensionPlansDefinedBenefitJapanMember
Other Postretirement Benefit Plans, Defined Benefit [Member] |
Estimated future employer contributions in the currect fiscal year | $ 3,452 us-gaap_DefinedBenefitPlansEstimatedFutureEmployerContributionsInCurrentFiscalYear / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember

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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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- Details
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- Details
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Data Type: | na
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X
- Details
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Data Type: | na
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