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

X

- 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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